Operating Manual EDS3090. Portable insulation fault location system for energised and deenergised systems Software version: D316 V1.

Transcription

1 Operating Manual EDS3090 Portable insulation fault location system for energised and deenergised systems Software version: D316 V1.0 TGH1420en/

2 Dipl.-Ing. W. Bender GmbH & Co. KG Londorfer Str Grünberg Germany Postfach Grünberg Germany Tel.: Fax: Web: Dipl.-Ing. W. Bender GmbH & Co. KG All rights reserved. Reprinting only with permission of the publisher. Subject to change!

3 Table of Contents 1. How to use this operating manual effectively How to use this manual Explanations of symbols and notes Chapters at a glance Safety instructions Intended use Device-specific safety instructions General safety instructions Skilled persons System description System components Overview system components List of insulation fault location system types Accessories Function of the system components PGH18... insulation fault test device Insulation fault evaluator EDS190P Measuring clamps Coupling device AGE Operating principle of insulation fault location (IΔs) Block diagram EDS system Test cycle Terms Currents in the EDS system Operating principle of residual current measurement (IΔn) Points to be considered before use How does an insulation fault location system work? Requirements for reliable insulation fault location Reduced test current Characteristic curves on the response sensitivity of EDS190P Response characteristic curves for main circuits in 3AC systems TGH1420en/

4 Table of Contents Response characteristic curves for main circuits in AC systems Response characteristic curves for main circuits in DC systems Response characteristic curves for control circuits in AC systems Response characteristic curves for control circuits in DC systems Commissioning and connection Decoupling the insulation monitoring device Deenergised systems Connection to an IT system Operation Brief description of insulation fault location (EDS mode) Commissioning of the PGH18... for test current supply Insulation fault location with EDS190P Operating elements of the PGH Display and operating elements of the EDS190P Operation of the EDS190P Switching the device on and off Display illumination provides improved readability Switching between the operating modes insulation fault location IΔs and residual current measurement IΔn Display elements and their meaning Standard displays of the EDS190P Standard display without enclosing the cable to be measured Standard display in the EDS mode (IΔs) with the cable enclosed Standard display in the RCM mode (IΔn) with the cable enclosed Alarms in the EDS or RCM mode Indication of device and measuring errors Factory settings EDS190P (delivery condition) Menu structure Navigation within the menu Menu item: Settings / General Menu item: Settings / IΔs Menu item: Settings / IΔn Menu item: Settings / system Menu item: View harmonics (Harmonics) Practical use Use as a portable insulation fault location system Using the EDS190P within a permanently installed EDS system EDS in diode-decoupled DC systems TGH1420en/

5 Table of Contents Using the EDS190P as a residual current monitor Measuring harmonics Coupling device AGE185 for higher voltages Power supply of the EDS190P Displaying the battery status Replacing batteries or accumulators Power supply unit delivered with the system Technical data Technical data of the EDS system Technical data PGH Technical data EDS190P Technical data measuring clamps Technical data AGE Dimension diagrams Standards Ordering information List of components Frequently asked questions INDEX TGH1420en/

6 Table of Contents 6 TGH1420en/

7 1. How to use this operating manual effectively 1.1 How to use this manual This operating manual describes how to operate the portable insulation fault location system EDS (with EDS190P, software version V1.0). It is designed for skilled personnel working in electrical engineering and electronics and in particular for those designing, installing and operating electrical systems. Before using the equipment, please read this operating manual, the supplement entitled Important safety instructions for Bender Products" and the instruction leaflets supplied with the individual system components. Please keep this documentation close at hand near to the equipment. Should you have any questions, please do not hesitate to contact our technical sales team. We are also happy to provide on-site services. Please contact our Service Department for more information. Service-Hotline: 0700-BenderHelp (Telefon and Fax) Carl-Benz-Straße Grünberg Germany Tel: Fax: Although great care has been taken in the drafting of this operating manual, it may nevertheless contain error and mistakes. The Bender Group cannot accept any liability for injury to persons or damage to property resulting from errors or mistakes in this manual. 1.2 Explanations of symbols and notes The following designations and symbols are used in this documentation for hazards and warnings: Information calling attention to hazards are marked with this warning symbol. Information intended to assist the user to make optimum use of the product are marked with the Info symbol. TGH1420en/

8 How to use this operating manual effectively 1.3 Chapters at a glance 1. How to use this operating manual effectively: This chapter provides tips and useful information on how to use this manual. 2. Safety instructions This chapter describes the dangers during installation and when operating the device. 3. System description: This chapter provides an overview of the system components, a description of their function and the fundamentals of insulation fault location. The last chapter describes the function of residual current measurement. 4. Points to be considered before use: This chapter describes the practical aspects of insulation fault location and provides a number of characteristic curves for evaluation of the response values to be set. 5. Commissioning and connection: This chapter describes the connection of the EDS to a system to be tested. 6. Operation: This chapter provides a description of the graphical user interface of the EDS190P. In addition, you will find a representation of the menu structure and the graphical representation of various standard displays. You will also find details about the power supply of the EDS190P. 7. Technical data: In addition to the data in tabular form, you will be informed about standards and the dimensions of the system components. 8. Frequently asked questions: This chapter will help you to recognise faults quickly which are likely to occur and provides suggestions for trouble shooting. 9. INDEX: Use the index to look up keywords quickly. 8 TGH1420en/

9 2. Safety instructions 2.1 Intended use The EDS is a portable insulation fault location system designed to locate insulation faults in IT systems. All versions are also suitable for measuring residual currents in TN and TT systems. The EDS3096PG is particularly suitable for insulation fault location in de-energised systems. Please take note of the limits for the application area specified in the technical data. Use deviating from or beyond the scope of this is considered non-compliant. System interferences and excessively high system leakage capacitances may influence the accuracy of the measurement negatively. 2.2 Device-specific safety instructions If the test current of the PGH18... is too high, sensitive loads (e.g. in control circuits) may be damaged or switching operations may be activated unintentionally. Therefore, it is recommended to select a lower test current (1 resp. 10 ma). In systems with programmable controllers (PLC), only EDS3091 or EDS3091PG may be used. The test voltage of DC 50 V in the voltage source (PGH186) integrated in the insulation fault location system EDS3096PG may cause interferences on sensitive system components. In case of doubt please consult Bender. The test current of the PGH185 or PGH186 may trigger RCDs. The test current is limited to max. 25 ma (resp. 10 ma), nevertheless, 30 ma RCDs may be triggered between 15 and 30 ma. Inside the measuring clamp, you should aim for the maximum possible symmetry of the conductors. Due to an excessively high load current, the measuring clamp can reach a saturation state that may cause an alarm message IΔn >10A. If electrical interferences occur during operation, the device may trip incorrectly and may indicate incorrect values on the display. 2.3 General safety instructions In addition to this data sheet, the documentation of the device includes a sheet entitled "Important safety instructions for BENDER products. TGH1420en/

10 Safety instructions 2.4 Skilled persons Only skilled persons may work on Bender products. Skilled means, persons who are familiar with the assembly, commissioning and operation of the equipment and have undergone appropriate training. Such persons must have read this manual and understood all instructions relating to safety. 10 TGH1420en/

11 3. System description 3.1 System components A detailed overview of the scope of delivery is given on page Overview system components The main task of the EDS is insulation fault location in IT systems. For this purpose, the individual components of the EDS are used in combination. 1 2 PSA3020 ON PSA mA M Us ON 25mA 10mA Imax MESSZANGE / CLAMP ON PROBE Datenblatt / Datasheet : TGH1320 Durchmesser / Diameter : 52 mm Art.-Nr. / Art.-no. : B max. 1 A 600 V CAT III 1000 ma / 0,1 ma ~ 3(N)AC V mit/with V DC V AGE V L1(+) L2(-) L3 PGH Aluminium case with carrying strap 2 Measuring clamp PSA3020 (main circuits) or PSA3320 (control circuits) Inside diameter of the measuring clamp 20 mm 3 Insulation fault test device PGH18... to generate a test current signal for insulation fault location 4 Insulation fault evaluator EDS190P for the connection of measuring clamps and for the location of insulation faults 5 Measuring clamp PSA3052 (main circuits) or PSA3352 (control circuits) Inside diameter of the measuring clamp 52 mm TGH1420en/

12 System description List of insulation fault location system types All device versions listed below are suitable for residual current measurement in TT and TN systems (earthed systems). The different system types and the measuring tasks they can be used for are listed below: Insulation fault location systems for main circuits Permissible system voltage ranges for main circuits: Insulation fault location in IT systems up to AC Hz, V and DC V Insulation fault location with AGE185 up to AC Hz V, DC V: EDS3090: Applicable in IT systems where a PGH471 insulation fault test device or an IRDH575 is already installed. EDS3090PG: Supply voltage of the PGH185 insulation fault test device delivered with the EDS system: AC Hz, 230 V Applicable in IT systems where neither a PGH471 insulation fault test device nor an IRDH575 is installed. EDS3090PG-13: Supply voltage of the PGH insulation fault test device delivered with the EDS system: AC Hz, V Applicable in IT systems where neither a PGH471 insulation fault test device nor an IRDH575 is installed. Permissible system voltage ranges for main circuits: Insulation fault location in IT systems up to AC Hz, V and DC V Insulation fault location with AGE185 up to AC Hz V, DC V: EDS3096PG: Supply voltage of the PGH186 insulation fault test device delivered with the EDS system: AC Hz, 230 V Insulation fault location, also in IT systems with all poles disconnected Applicable in IT systems where neither a PGH471 insulation fault test device nor an IRDH575 is installed. EDS3096PG-13: Supply voltage of the PGH insulation fault test device delivered with the EDS system: AC Hz, V Insulation fault location, also in IT systems with all poles disconnected Applicable in IT systems where neither a PGH471 insulation fault test device nor an IRDH575 is installed. 12 TGH1420en/

13 System description Insulation fault location systems for control circuits Permissible system voltage for control circuits: Insulation fault location in IT systems up to AC Hz, V and DC V. EDS3091: Applicable in IT systems where a PGH473 insulation fault test device or an IRDH575 is already installed. EDS3091PG: Supply voltage of the PGH183 insulation fault test device delivered with the EDS system: AC Hz, 230 V Applicable in IT systems where neither a PGH473 insulation fault test device nor an IRDH575 is installed. EDS3091PG-13: Supply voltage of the PGH insulation fault test device delivered with the EDS system: AC Hz, V Applicable in IT systems where neither a PGH473 insulation fault test device nor an IRDH575 is installed. Insulation fault location system for main circuits and control circuits EDS3092PG: It consists of the same components as EDS3090PG and EDS3091PG and combines the features of the two devices Accessories For details about optional accessories also refer to ordering information and the list of components on page 56 and page 57. When working with the EDS only use those components which are delivered with the system. In particular, do not use any other measuring clamps! This also applies to additional measuring clamps or measuring current transformers from the Bender range which are not exclusively designed for use with EDS TGH1420en/

14 System description 3.2 Function of the system components PGH18... insulation fault test device The PGH18... generates a defined test current signal. The test current generated in this manner depends on the size of the present insulation fault and the system voltage. Depending on the switch position of the PGH185 or PGH186 the test current is limited to a maximum of 25 ma or 10 ma respectively, the PGH183 limits the test current to a maximum of 2.5 ma or 1 ma respectively. In deenergised IT systems or in IT systems with a system voltage of < 50 V, the PGH186 drives a test current through an integrated voltage source (DC 50 V). In IT systems with a system voltage of > 50 V, the currently available in the system is used to drive the test current Insulation fault evaluator EDS190P The insulation fault evaluator EDS190P provides the following measuring functions: Insulation fault location I ΔS (EDS mode) for use in IT AC systems or DC systems: within the portable EDS insulation fault location system or within a permanently installed EDS46.../49... insulation fault location system. Residual current measurement I Δn (RCM mode) for use in TN or TT AC systems. The response value range is listed in the Tabelle 3.1 auf Seite 14. Response value The response value is determined by the sensitivity of the EDS190P evaluator. In DC, AC and 3AC IT systems, this is an arithmetic average value that can be set according to Tabelle 3.1 auf Seite 14. System interferences and excessively high system leakage capacitances may have a negative influence on the accuracy Measuring clamps Measuring clamps detect the test current signal resp. the residual current. The measuring lead has a length of approximately 2 m. The connection to the EDS190P is made via a BNC connector. The most important data of the different measuring clamps are listed in the table below. IT system TN/TT system Main circuit (EDS , ) Tab. 3.1: Measuring clamps and response values for EDS190P Control circuit (EDS ) Measuring clamps PSA3020, PSA3052, PSA3165 PSA3320, PSA3352 Measuring range ma ma Response value ma, ±30 % / ±2 ma ma, ±30 % / ±0.1 ma Measuring clamps PSA3020, PSA3052, PSA3165 PSA3320, PSA3352 Measuring range 5 ma...10 A 2 ma...2 A Response value 10 ma...10 A 5 ma...1 A If measuring current transformers are to be used instead of measuring clamps, you will need the adapter delivered with the system: BNC/4 mm plug. See table on page TGH1420en/

15 System description Coupling device AGE185 The coupling device AGE185 extends the nominal voltage range of the insulation fault location system EDS It allows connection to nominal voltage ranges up to AC 790 V resp. DC 960 V. 3.3 Operating principle of insulation fault location (I Δs ) When a first insulation fault occurs in IT systems, a residual current flows which is essentially determined by the system leakage capacitances. The basic concept in fault location is therefore to close the fault current circuit for a short period over a defined resistance. As a result of this principle, the system voltage itself drives a test current containing a signal that can be evaluated. The test current is generated periodically by the PGH18... insulation fault test device (which is a component of the EDS309...PG system). Optionally, the test current can also be generated by an IRDH575 or PGH47... insulation fault test device. The test current is limited in amplitude and time. As this happens, the system conductors are connected alternately to earth via a defined resistance. The test current generated in this manner depends on the value of the present insulation fault and the system voltage. The test current of the EDS3090 is limited to a maximum of 25 ma, and when I max = 10mA is set, it is limited to 10 ma. For planning purposes, it should be noted that no system components are present in which this test current can bring about a damaging reaction, even in unfavourable cases. The test current pulse flows from the insulation fault test device via the live parts, taking the shortest path to the location of the insulation fault. From there, it flows via the insulation fault and the earth conductor (PE) back to the insulation fault test device. This test current pulse is then detected by the measuring clamps or measuring current transformers located in the insulation fault path, and is signalled by the connected insulation fault evaluator EDS190P. You must ensure that all live conductors are routed through the measuring clamp. Do not route any PE conductors or shields of shielded conductors through the measuring clamp! Normal commercial measuring clamps are not suitable for the EDS and must not be used. Only if these notes are observed will you obtain a true measurement result. Additional information is available in our "Transformer installation" technical information. TGH1420en/

16 System description Block diagram EDS system U n L1(L+) IT-System L2(L-) PSA PGH... EDS190P R F PE EDS190P PGH... U n PSA... R F PE Insulation fault evaluator Insulation fault test device System voltage IT system Measuring clamp Insulation fault Protective earth conductor Test cycle The duration of the test current pulse cycle is 6 seconds. The PGH... alternately sends positive and negative test current pulses. The test cycle of the PGH... is shown in different switch positions (1, 2, 3) in the block diagram below (also see block diagram of the EDS system above). Position PGH sec 4 sec 2 sec 4 sec EDS Start 16 TGH1420en/

17 System description Terms I Δs Measured value of the selective fault current of the evaluator unit (EDS mode). Residual current created by an insulation fault (RCM mode). I Δn Currents in the EDS system In addition to the block diagram on page 16, the path of the residual currents and the test current is illustrated in the diagram below: U n IT-System PSA... I Dn, I T EDS190P PGH... C E-V R F-V C E-N R F-N PE... Test current loop I T Residual currents I Δn (example) C E-V C E-N R F-V R F-N Upstream capacitances, system leakage capacitances upstream the measuring current transformer Downstream capacitances, system leakage capacitances downstream the measuring current transformer Insulation fault upstream the measuring current transformer Insulation fault downstream the measuring current transformer The following residual currents flow through the measuring current transformer of the EDS... : The test current I Τ caused by the insulation fault R F-N Residual currents I Δn flowing through the system leakage capacitances C E-V and C E-N resp. caused by R F-V and R F-N, Transient leakage currents caused by switching and control activities in the system, Low-frequency leakage currents caused by the use of converters TGH1420en/

18 System description 3.4 Operating principle of residual current measurement (I Δn ) In the RCM mode, the EDS operates according to the principle of residual current measurement. In this case, only the evaluator unit EDS190P with the measuring clamp is used, the PGH18... insulation fault test device is not required. In accordance with Kirchhoff's Law, the sum of the inflowing currents at every intersection in a system is equal to the sum of the outflowing currents. I to I from I D =0 MESSZANGE / CLAMP ON PROBE Datenblatt / Datasheet : TGH13xx Durchmesser / Diameter : 52 mm Art.-Nr. / Art.-no. : B 980 xxx PSA3052 PE Fig. 3.1: The two currents I to and I from are equal in quantity but have different directions, so that the resultant sum is zero. The EDS190P recognises this, no message is generated. I to I from MESSZANGE / CLAMP ON PROBE Datenblatt / Datasheet : TGH13xx Durchmesser / Diameter : 52 mm Art.-Nr. / Art.-no. : B 980 xxx PSA3052 I D=0 R F PE Fig. 3.2: A portion of the current is flowing away via an insulation fault R F. The sum of the currents is no longer zero. If the residual current is equal to or greater than the response value, the EDS190P will generate a message. In the RCM mode, residual currents can be measured in one and three-phase TT or TN systems. If the system leakage capacitance upstream of the measuring clamp is sufficiently high, the EDS190P can also be used for measurements in one and three-phase IT systems. Its suitability for this purpose must be checked in each individual case. 18 TGH1420en/

19 4. Points to be considered before use 4.1 How does an insulation fault location system work? An insulation fault location system consists of a PGH18...insulation fault test device and an EDS190P insulation fault evaluator in combination with a PSA3... measuring clamp. Functional sequence Start insulation fault location by activating the PGH18... insulation fault test device The PGH18... insulation fault test device for a short period connects the live conductors to earth via an electronic current limiting device. A test current I T which is dependent on the system voltage and on the value of the insulation fault flows and closes the fault current circuit. The test current is limited to a maximum value of 25 ma resp. 10 ma (PGH185/186) or 2.5 ma resp. 1 ma (PGH183). The test current pulse flows from the insulation fault test device via the live conductors, the insulation fault R F and the earth conductor (PE conductor) back to the insulation fault test device. This current pulse can be detected by enclosing the outgoing conductors of the distribution point, located in the current circuit, with the measuring clamp and can be evaluated with the EDS190P insulation fault evaluator. By measuring along the cable with the measuring clamp, the point of the fault can be located precisely. PSA... PGH18... EDS190P Fig. 4.1: Function of the EDS system TGH1420en/

20 Points to be considered before use 4.2 Requirements for reliable insulation fault location The task of the insulation fault evaluator is to detect insulation faults downstream of the measuring clamp RF-N. It is designed to recognise reliably the test current caused by the insulation fault for this purpose. Requirements: The insulation fault must be present for at least 30 seconds. The test current range: for main circuits with EDS3090, EDS3090PG, EDS3090PG-13, EDS3096PG is: It = ma for control circuits with EDS3091, EDS3091PG, EDS3091PG-13 is: It = ma The upstream capacitances C E-V must be at least as large as the downstream capacitances C E-N. The total system leakage capacitance must not exceed the following values: for main circuits with EDS3090, EDS3090PG, EDS3090PG-13, EDS3096PG: up to μfv (product of the system leakage capacitance and nominal system voltage) for control circuits with EDS3091, EDS3091PG, EDS3091PG-13: up to μfv (product of the system leakage capacitance and nominal system voltage) The sum of the test current and residual current flowing through the measuring clamp and the measuring current transformer must not exceed the following values: for main circuits with EDS3090, EDS3090PG, EDS3090PG-13, EDS3096PG-13: 10 A for control circuits with EDS3091, EDS3091PG, EDS3091PG-13: 1 A There must not be any connections to other sub-distributions downstream a measuring clamp or an installed measuring current transformer, see the illustration below. Fig. 4.2: Connections between sub-distributions lead to measuring errors Not only does the value of the residual current influence the reliable detection of the test current but also the respective frequency of the residual current. Residual currents deviating from the system frequency may be caused by the use of frequency converters, for example. The behaviour of the EDS is described in the fault curve illustrated below: When the measured residual current values exceed a value of 10 A in main circuits, the EDS190P outputs the alarm message IΔn>10A. This applies to nominal system frequencies of 50/60/400 Hz for EDS3090, EDS3090PG, EDS3090PG-13, EDS3096PG and EDS3096PG TGH1420en/

21 Points to be considered before use When the measured residual current exceeds a value of 1 A in control circuits, the EDS190P outputs the alarm message IΔn>1A. This applies to nominal system frequencies of 50/60/400 Hz foreds3091, EDS3091PG and EDS3091PG-13. When residual currents of nominal system frequencies below 50 Hz occur, the message "Fault" will be generated. Example: When a residual current of 2 A with a frequency of 20 Hz occurs (red dot in the diagram), the insulation fault location system is outside the permissible measuring range and the message "Fault" appears on the display of the EDS190P. Fig. 4.3: A residual current value of 2 A is outside of the permissible frequency range (red dot) Sub-distributions downstream of the measuring clamp must not be galvanically connected with each other, because such connections create disturbing residual currents. As a result, the message "Fault" or "IΔn>10A may be output, for example. Symmetrical insulation faults downstream of the measuring current transformer may not be recognised under certain circumstances. Low-frequency residual currents (caused by converters, for example) may have the effect that insulation faults cannot be found when their frequency is equal or nearly equal the test cycle frequency of the PGH186. Cables leading to the same load in parallel are to be passed together through the measuring clamp during the measurement. TGH1420en/

22 Points to be considered before use 4.3 Reduced test current Especially in DC control voltage systems in the power station and energy supply utility sector, relays or SPCs might be installed which switch already in case of relatively low currents. In such a case, the switch I max on the PGH18... must be moved to 10/1 ma position. The test current limiting values 10 ma and 25 ma indicated on the switch only applies to DC systems. Prior to measurements with the EDS with reduced test current (switch position 10/1 ma), it is also necessary to check whether any sensitive system components can be caused to operate unintentionally. 4.4 Characteristic curves on the response sensitivity of EDS190P The type of supply system, system voltage, system frequency, leakage capacitance and test current have an effect on the response sensitivity of the EDS system. The value of the test current can be set at the PGH18... insulation fault test device. Resulting from the type of supply system, the real test current in AC systems is lower than the setting. In comparison to DC systems, the factor is 0.5 in AC systems respectively 0.67 in 3AC systems. For use in AC and 3AC systems, set the response value at the EDS190P as follows: Application Main circuit Control circuit Insulation fault location system Setting EDS190P Maximum test current Menu 2.5: I Δs max Setting PGH18... Test current I T Response range EDS190P Menu 3.2 Setting PGH18... Reduced test current I T Response range EDS190P Reduced test current Menu 3.2 EDS3090 EDS3090PG EDS3090PG-13 EDS3096PG max. 50 ma 25 ma (PGH185/186) Tab. 4.1: Settings on the insulation fault location system EDS3091 EDS3091PG EDS3091PG-13 max. 5 ma 2.5 ma (PGH183) ma ma 10 ma (PGH185/186) 1 ma (PGH183) ma ma For details on the setting of the response value, refer to Setting menu 3: (Settings IΔs) on page 37. The response values are shown as characteristic curves. The maximum deviation can be +/- 30 %, including the tolerances of the measuring clamps. The characteristic curves apply to the respective nominal voltage indicated in the diagram. If the nominal voltage of the system being monitored is different from the nominal voltage shown in the diagram, the response values may change proportionally. Nominal voltages changing dynamically during operation or in case of superimposed alternating currents that deviate from the system frequency (e.g. caused by frequency converters) or superimposed direct currents may result in response values that are outside the range displayed in the diagram. The following curves makes light work of determining a correct and practical response value for this EDS190P. When the insulation monitoring device shows an alarm message in a system being monitored, manual insulation fault location can be started. Proceed as follows: 1. Select the characteristics (3 AC, AC, DC) that are appropriate for your type of distribution system. 22 TGH1420en/

23 Points to be considered before use 2. From these, select the diagram that best matches the desired system voltage. 3. Calculate the anticipated leakage capacitance of the system being monitored. Insulation monitoring devices of the IRDH... series can display the value of the leakage capacitance (press the INFO key). Apply this value to the diagram in the form of a vertical line. If it is not possible to query the leakage capacitance, the respective highest value is to be taken from the characteristic curve. 4. The curves show the response sensitivity values 2 ma, 5 ma and 10 ma set for the EDS190P for main circuits and 0.2 ma, 0.5 ma and 1 ma for control circuits. Values above the respective curve cannot be detected. Values and characteristics that fall between the top and bottom characteristics can be roughly determined on the basis of those actually provided. 5. Set the respective response value on the EDS190P. 6. The curves for DC 24 V and AC 42 V do not apply to the EDS3096 because the insulation fault test device works with its own test voltage of DC 50 V. For this reason, the curves for DC 60 V and AC 110 V are valid for these nominal voltages Response characteristic curves for main circuits in 3AC systems Re [kohm] Re [kohm] AC 230 V 2mA 5mA 10mA Ce [µf] 3AC 500 V 2mA 5mA 10mA Ce [µf] Re [kohm] Re [kohm] AC 400 V 2mA 5mA 10mA Ce [µf] AC 690 V 2mA 5mA 10mA Ce [µf] TGH1420en/

24 Points to be considered before use Response characteristic curves for main circuits in AC systems Re [kohm] AC 42 V 2mA 5mA 10mA Ce [µf] Re [kohm] AC 110 V 2mA 5mA 10mA Ce [µf] Re [kohm] AC 230 V 2mA 5mA 10mA Ce [µf] Re [kohm] AC 400 V 2mA 5mA 10mA Ce [µf] Response characteristic curves for main circuits in DC systems Re [kohm] Re [kohm] DC 24 V 2mA 5mA 10mA Ce [µf] DC 110 V 2mA 5mA 10mA Ce [µf] Re [kohm] Re [kohm] DC 60 V 2mA 5mA 10mA Ce [µf] DC 230 V 2mA 5mA 10mA Ce [µf] 24 TGH1420en/

25 Points to be considered before use Response characteristic curves for control circuits in AC systems Re [kohm] AC 42 V 0,2mA 0,5mA 1,0mA Re [kohm] AC 110 V 0,2mA 0,5mA 1,0mA Ce [µf] Ce [µf] Re [kohm] AC 230 V 0,2mA 0,5mA 1,0mA Ce [µf] Response characteristic curves for control circuits in DC systems Re [kohm] Re [kohm] DC 24 V 0,2mA 0,5mA 1mA Ce [µf] DC 110 V 0,2mA 0,5mA 1,0mA Ce [µf] Re [kohm] Re [kohm] DC 60 V 0,2mA 0,5mA 1,0mA Ce [µf] DC 230 V 0,2mA 0,5mA 1,0mA Ce [µf] TGH1420en/

26 Points to be considered before use 26 TGH1420en/

27 5. Commissioning and connection Prior to commissioning make sure that the supply voltage of the PGH18... and of the power supply unit (as appropriate) corresponds to the voltage of the supplying system. When the devices are operated with wrong supply voltage, the devices may be damaged. Prior to commissioning, please check that all system components are connected to each other. 5.1 Decoupling the insulation monitoring device While insulation fault location is being undertaken with the EDS309..., an existing insulation monitoring device must be disconnected from the system for the duration of the fault location, if its internal resistance R i is < 120 kω. This must be done by effecting an all-pole interruption of the system coupling, it is not sufficient to switch off the supply voltage to the insulation monitoring device. When a device is used with an R i of 120 kω, the influence is negligible, and in this case there is no need to disconnect. However, take into consideration that the PGH influences the measurements of the insulation monitoring device. 5.2 Deenergised systems For insulation fault location in deenergised systems with EDS3096PG, the integrated voltage source (G) of the PGH186 provides a test voltage of DC 50 V. The test voltage DC 50 V supplied by the PGH186 is available at the socket L1(+). Make sure that this socket is connected to the system to be monitored. Only in this way, the integrated voltage source of PGH186 will be available. Please note that all live conductors of the system to be searched must be connected to each other via loads or the deenergised power supply. U S = 0 V L1(L+) L2(L-) IT-System PSA... + G - L1 EDS190P 3 R F PE 1 2 PGH186 TGH1420en/

28 Commissioning and connection 5.3 Connection to an IT system Connect the EDS as described below: 3 AC - System 3/N AC - System Un L1 L2 L3 N PE AC - System Un L1 L2 PE PE L1 L2 L3 PE L1 L2 DC - System Un L+ L- L1 L2 If the terminals L1, L2, L3 (resp. L1, L2) of the device are connected to a live system under operation, the terminal must not be disconnected from the protective conductor (PE). 28 TGH1420en/

29 6. Operation 6.1 Brief description of insulation fault location (EDS mode) Commissioning of the PGH18... for test current supply 1. First, connect the PGH18... to the PE of the system to be checked, see page Then connect the PGH18... to active conductors 3. Connect the device to U S and switch it on If the test current I T is to be generated by an IRDH575, its menu item EDS-Setup has to be set to EDS=On Insulation fault location with EDS190P 1. Connect the measuring clamp to the EDS190P 2. Switch the device on with the On/off button 3. A self test is carried out, wait until the message OK appears 4. Check whether the right measuring clamp has been set on the EDS190P 5. Enclose the PE conductor between PGH18... (IRDH575) and/or the PE bar with the measuring clamp in order to prove the test current I T 6. Enclose the functionally related active conductors of the respective sub-distributions with the measuring clamp. Warning! Do not enclose the PE! 7. Read and evaluate the measured value. If the set response value has been exceeded, the message alarm appears on the display with the alarm LED flashing. TGH1420en/

30 Operation 6.2 Operating elements of the PGH ON 1 7 Us 25mA Imax 2 6 M 100mA ON 10mA 3(N)AC V mit/with V DC V AGE V L1(+) L2(-) L3 PGH ON/OFF switch, activates the test current 2 Selector switch for the maximum test current 25 / 10 ma or 2.5 / 1 ma 3 Not visible: Magnetic adhesive strip at the back of the enclosure for fixing to metal parts (e.g. switchboard cabinet) 4 3 sockets for system coupling 5 Socket for PE connection 6 LED indicators: Power ON LED Indication of the positive test cycle of the test current Indication of the negative test cycle of the test current 7 Microfuse 100 ma 8 Panel plug for supply voltage 30 TGH1420en/

31 Operation 6.3 Display and operating elements of the EDS190P Connection for external power supply unit DC 6 V 2 BNC connection for the measuring clamp 3 LC display, illuminated 3 lines a 16 characters 4 Alarm LED, lights when the response value is exceeded I Ds I Dn INFO ESC Button for the selection of the operating mode: I ΔS = Insulation fault location in IT systems (EDS mode) I Δn = Residual current measurement in TN-S systems (RCM mode) Button to select the measuring current transformer for I Tmax = 50 ma: for I Tmax = 5 ma: P20 = PSA3020 = PSA3320 P52 = PSA3052 = PSA3352 P165 = PSA W/WR = W... / WR... = W WS = WS... = W INFO key: - Device type - Software version - Current response values I ΔS and I Δn - Setup status ESC key: Exits the menu function without changing parameters TGH1420en/

32 Operation 8 MENU MENU key: To start the Menu mode Enter key: To confirm changed parameter values or the selected menu items 9 On-Off button 10 Illumination button: On /Off switching of the display illumination 11 RESET RESET button: To clear the fault memory DOWN key: To move down in the menu, to decrease the parameter value 12 HOLD HOLD button: To save the measured value UP key: To move up in the menu, to increase the parameter value 32 TGH1420en/

33 Operation 6.4 Operation of the EDS190P Switching the device on and off 1. Prior to commissioning, connect a measuring clamp (e.g. PSA3052) to the EDS190P! 2. Switch the device on by means of the On/Off button. Once the device is switched on, the self test is started. When the self test runs correctly, the message "Test OK appears on the display. The device is factory set to the EDS mode. Press the On/Off button for approximately 2 seconds to switch the device off. 1. Display indication when starting for approx. 3 s EDS190P BENDER GmbH&CoKG D Grünberg 2. Display indication when starting for approx. 10 s EDS190P Self-test >> >> >> >> 3. Display indication when starting for approx. 3 s EDS190P Self-test TEST OK Fig. 6.1: Starting sequence of the EDS190P Display illumination provides improved readability Press the illumination button on the bottom left in order to improve the readability of texts and symbols. By pressing the button again the illumination can be switched off Switching between the operating modes insulation fault location I ΔS and residual current measurement I Δn Here, the measuring functions can be selected. I Δn for residual current measurement preferably for TN-TT systems. I Δs for insulation fault location in IT systems. Avoid changing the operating mode during insulation fault location. TGH1420en/

34 Operation Display elements and their meaning Insulation fault location is carried out in the EDS mode, as illustrated in the figure below Progress bar to show the measurement progress in the EDS mode 2 Indication of the test current pulse: = positive impulse, idle time, = negative impulse 3 Type of distribution system: AC, DC 4 Hold function activated; Measured value indication "frozen 5 Charge status of the accumulators 6 Alarm output activated via LED 7 Loudspeaker symbol visible: An existing alarm will also be output acoustically. 8 Fault memory M is activated 9 10 Selected measuring current transformer for I Tmax = 50 ma: for I Tmax = 5 ma: P20 = PSA3020 = PSA3320 P52 = PSA3052 = PSA3352 P165 = PSA W/WR = W... / WR... = W WS = WS... = W Selection of the measuring sensitivity = Control circuit = I Tmax = 5 ma = Main circuit = I Tmax = 50 ma 11 I Δn = Indication of the currently flowing residual current 12 I ΔS = Indication of the currently flowing test current 34 TGH1420en/

35 Operation 6.5 Standard displays of the EDS190P Standard display without enclosing the cable to be measured The device is in the EDS mode (I ΔS ). I ΔS will not be indicated, because no conductor is enclosed with the measuring clamp. I s = 0mA >> >> >> I n < 100mA P52 M H AC Standard display in the EDS mode (I ΔS ) with the cable enclosed The display shows a measured fault current I ΔS of 10 ma. A new measurement is being carried out. This is indicated by the progress bar represented as an angle. I s = 10mA >> >> >> I n < 100mA P52 M H AC Please note that only 50% of the value of the test current I T created by the PGH18... in AC systems is indicated by the EDS190P. One-way rectifiers used in the PGH18... decreases the indicated value in AC systems to 50 %, in 3AC systems to 67 % Standard display in the RCM mode (I Δn ) with the cable enclosed The display shows a measured residual current I Δn of 160 ma. The set residual current response value is 1000 ma. I n = 160mA Resp. = 1000mA P52 M H AC The following display shows a standard indication with menu item "4.Harmonics on activated. This setting is only possible for systems with a frequency of 50 Hz and 60 Hz. The display shows a measured current of 4 ma as well as harmonic distortion of 64 % for the first harmonics. I n = 6.0mA H1=4mA THD=64% P52 M H 50Hz 6.6 Alarms in the EDS or RCM mode When one of the set response values I Δs or I Δn are exceeded, the message alarm appears on the display. I s = 10mA Alarm Next Measurement P52 M H AC Alarm during insulation fault location I n = 160mA Alarm Resp. = 100mA P52 M H AC Alarm during an RCM measurement TGH1420en/

36 Operation 6.7 Indication of device and measuring errors Fault messages possible to occur are explained in the table below. No CT connected P52 M H AC Short Circuit CT P52 M H AC I s = 0mA Fault I n < 100mA P52 M H AC No measuring clamp or no measuring current transformer at the measuring input or wrong measuring current transformer connected Actions: Connect the appropriate measuring clamp or measuring current transformer Short circuit in the measuring clamp or measuring current transformer or wrong transformer type connected. Actions: Connect intact and appropriate measuring clamp A fault occurred during insulation fault location (EDS mode). Possible causes: The measuring clamp is not held steady. A residual current is flowing through the measuring clamp which disturbs the measurement. A magnetic field exists in the vicinity of the measuring clamp which disturbs the EDS measurement. 6.8 Factory settings EDS190P (delivery condition) Most of the parameters are set in the menu. If this is not the case, the setting is market with (button). Button operating mode: I Δs (EDS mode = insulation fault location) Button transformer selected: Measuring clamp PSA3052 (EDS3090 and 3096) Measuring clamp PSA3352 ( EDS3091) Button illumination: off Memory: off Alarm LED: on Buzzer: on Test current I T max: 50 ma (EDS3090 and 3096) 5 ma (EDS3091) Response value (for IΔs): 5 ma (EDS3090 and 3096) 500 μa (EDS3091) Type of distribution system (for IΔs): AC System with converter (for IΔs): no Response value (for IΔn): 100 ma System frequency (for IΔn): 50 Hz Measurement of the harmonics (for IΔn): off Language in the display: English Time: CET 36 TGH1420en/

37 Operation 6.9 Menu structure A schematic sketch of the menu structure is shown below. Level 1 Level 2 Level 3 1. Exit 2. Settings 1. Exit 2. General 1. Exit 2. Memory: on/off 3. Buzzer: on/off 4. AlarmLED: on/off 5. I T max: 5mA / 50mA 3. View harmonics 4. Service 3. IΔs 1. Exit 2. Resp.: mA / μA 3. System type: AC/DC 4.Inverter: yes / no 4. IΔn 1. Exit 2. Resp: mA 3. Freq: 50Hz / 60Hz / up to 2kHz 4. Harmonics: on/off 5. System 1. Exit 2. Language: German / English / French 3.Clock 1. Exit 2. H1= 0 ma 3. H2= 0 ma H8= 0 ma 10. H9= 0 ma For service purposes only This menu item exclusively serves the purpose of displaying the harmonics from H1 to H9. If you want to view the occurring harmonics in the standard display outside the menu, you have to activate the menu item "4. Harmonics: 6.10 Navigation within the menu - Starting the menu mode with MENU - Selection of the menu item or confirming a a value with Enter MENU - Navigating up or down in the menu - increasing or decreasing values HOLD RESET ESC: - To exit the selected menu item - To exit the modified setting without saving INFO ESC TGH1420en/

38 Operation All menu descriptions below are based on the factory settings. These settings are given in brackets after the menu items of level Menu item: Settings / General Alarms are always signalled on the display. In delivery condition, alarms are also signalled by an alarm LED and a buzzer. You can use these menu items to set whether: alarms are to be saved alarms are not to be signalled acoustically alarms are not to be signalled by an alarm LED the measuring sensitivity of the EDS190P is to be adapted to the test current of a control or main circuit. A maximum test current I T of 5 ma is to be used for control circuits, and maximum test current of 50 ma for main circuits. Level 1 Level 2 Level 3 2. Settings 1. Exit 2. General 1. Exit 2. Memory: on / off (off) 3. Buzzer: on / off (on) 4. AlarmLED: on / off (on) 5. I T max: 5mA / 50mA (50mA), (EDS3090/3096) (5mA), (EDS3091) 6.12 Menu item: Settings / IΔs Use this menu item to set all relevant parameters for insulation fault location: the I ΔS response value for control circuits in the range of μa. This value range is specified by the value I T max = 5 ma. Or the I ΔS response value for main circuits in the range of ma. This value range is specified by the value I T max = 50 ma. Adaption to the system to be monitored: AC or DC. Select yes, if a converter is operated in the system to be monitored. Level 1 Level 2 Level 3 2. Settings 1. Exit 3. IΔs 1. Exit 2. Response value: mA / μA 3. Supply system: AC/DC 4. Inverter: yes / no 38 TGH1420en/

39 Operation 6.13 Menu item: Settings / IΔn Use this menu item to set all relevant parameters for residual current measurement: Set the I Δn response value between 10 ma and 10 A. Set the frequency of the system being monitored here. If you want to view the currents of the occurring harmonics on the standard display, activate the menu item "4. Harmonics. When the Harmonics menu has been activated, please note that only system frequencies of 50 Hz and 60 Hz can be selected. Level 1 Level 2 Level 3 1. Exit 2. Settings 1. Exit 4. IΔn 1. Exit 2. Resp.: mA 3. Freq.: 50Hz / 60Hz / up to 2kHz 4. Harmonics: on/off 6.14 Menu item: Settings / system Use this menu item to select the appropriate display language and set the correct date and time. For setting the date, different formats can be selected. Level 1 Level 2 Level 3 1. Exit 2. Settings 1. Exit 5. System 1. Exit 2. Language: German / English / French 3.Clock 6.15 Menu item: View harmonics (Harmonics) This menu item exclusively serves the purpose of displaying the harmonics from H1 to H9. Level 1 Level 2 Level 3 1. Exit 3. View Harmonics 1. Exit 2. H1= 0 ma 3. H2= 0 ma H8= 0 ma 10. H9= 0 ma This menu item exclusively serves the purpose of displaying the harmonics from H1 to H9. If you want to view the occurring harmonics in the standard display outside the menu, you have to activate the menu item "4. Harmonics: on/off. TGH1420en/

40 Operation 6.16 Practical use Use as a portable insulation fault location system The primary application of the EDS is as a portable insulation fault location system in IT systems. After all the information of the chapter Points to be considered before use auf Seite 19 has been considered, the actual fault location operation may be started. Proceed as follows: 1. Check that the nominal system voltage is within the permissible limits. 2. Connect up the PGH18... near the supply input. When you do this, you must comply with the general guidelines for live work! Before making a connection to the system to be checked, connect the green-yellow conductor over the PE socket of the PGH18... with the PE of the system. Only then, connect the PGH18... to the system to be checked using the connecting cable supplied with the device Three-phase system Connect the sockets L1, L2 and L3. Single-phase system AC or DC Connect the sockets L1 and L2. 3. Connect the PGH18... to a suitable supply voltage (see nameplate) using the power supply cable supplied with the device. 4. If the insulation monitoring device which is present in the IT system has an internal resistance of < 120 kω, effect an all-pole interruption of the system coupling. It is not sufficient to switch off the supply voltage to the insulation monitoring device. 5. Set the switch position I max on the PGH18... Refer to the instructions in the chapter Reduced test current auf Seite Switch the PGH18... on. The "ON" LED must light up, the two LEDs " " and " " must light up in time with the cycle and then go out again. If the LEDs fail to show any activity whatsoever, the supply voltage and the microfuse installed in the PGH18... should be checked. 7. Connect a suitable measuring clamp or a measuring current transformer to the EDS190P. 8. Switch on the EDS190P by pressing the On/Off button. 9. Make the following settings: Select the function I ΔS (EDS mode) by pressing the button Set the maximum sensitivity: 50 ma for main circuits for EDS3090, EDS3090PG, EDS3090PG-13, EDS3096PG-13, the measuring clamps PSA3020, PSA3052, PSA3165 and the measuring current transformers W/ WR, WS. 5 ma for control circuits for EDS3091, EDS3091PG, EDS3091PG-13, the measuring clamps PSA3320, PSA3352 and the measuring current transformers W 8000, WS 8000 Select the measuring clamp or the measuring current transformer to be used with the button. Set the supply system of the system to be monitored in the menu 2.3 (setting IΔs). Select yes in menu 3 (setting IΔs) if frequency converters are connected to the sub-distributions to be checked. 10. When using measuring clamps please note: Do not connect the core of the measuring clamp to system voltages above the nominal insulation voltage. Keep the contact surfaces of the measuring clamp clean. 40 TGH1420en/