INSULATION MONITORING DEVICES

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2 1 / 8 INDEX: Technical specifications VA Technical specifications TI1...3 Technical specifications CR5...4 Installation, configuration and use...5

3 2 / 8 1- INSULATION MONITORING RELAY VA Functions: Measuring and signalling insulation failures or network overload. It also has dual input for connecting a thermal to measure the temperature of the isolating transformer. Designed to be a reading point of error and also to act on the network. It has an auxiliary relay (NO C NC) which is connected when it exceeds the set temperature or insulation threshold. The relay operation is indicated by a LED. Up to 4 repeater panels CR5 can be connected to a single unit of this device. Configured using the buttons on the front and the numeric indication of the display (See installation manual). Power supply, error and alarm indicators via LEDs of different colours and a test button which checks the proper functioning of this device VA40, CR5 and TI1 at the same time. Possibility of providing the device capable of communication via RS485 protocol with the purpose of signal monitoring by PC, PLC,, etc Dimensions: * mm 1.3- Technical characteristics: Power supply Vac ± 20% Frequency Hz Consumption 5 VA Net control Vac, Hz Current measuring 1 ma Display 3 digits Low insulation measuring range 50 to 500 kω Over-current 1 to 99,9 A Temperature control 20 to 180 ºC. (double indication by display) Action delay 1 to 60 seconds Input for temperature s Dual (PTC or ) Protection degree IP-50 Frontal IP-20 Rear Ambient temperature -10 to 60 C Maximum humidity 95% Storage temperature -20 to 80 ºC Test voltage 2,5 kv x 1 50 Hz Mounting Assembly on DIN 35 mm rail. Dimensions equivalent to 6 DIN 17,5 mm modules Current ratio 1 to 40 Connections By screw. Maximum section Ø2.5mm Optional RS485 MODBUS-RTU data transmission Standards CEI-EN CEI-EN CEI 64.8/7-710 V2 CEI-EN IEC VDE 0413 part.8

4 3 / 8 2- MEASURING CURRENT TRANSFORMER TI Functions: Measurement of the current in the secondary of the transformer, which coincides with the isolated network, for the insulation monitor relay to activate the alarm in case of overload. Previously, this device must have been set with the admissible current in this network according to its loads Dimensions: * mm 2.3- Technical characteristics: Reference voltage for insulation 0,72 kv Frequency Hz Test voltage 3 kv x 1 50 Hz Insulation class Class B Protection degree IP-20 Continuous overload 1,2In Thermal overload 40In Ambient temperature -25 to 50 C Storage temperature -40 to 80 C Standards IEC/EN

5 4 / 8 3- REPEATER PANEL CR5: 3.1- Functions: Signalling of insulation faults or network overloads. It has two buttons: - TEST BUTTON: Simulates an insulation fault and tests the insulation monitor relay operation. When pressing this button, a warning light and an acoustic alarm of insulation fault should work. - SILENCE BUTTON: Silences the acoustic alarm. This device is intended to act only as a reading point of error, not operating on the network. Several of these devices can be connected in parallel, being possible to silence the acoustic alarm of all of them just silencing one CR Dimensions: * mm 3.3- Technical characteristics: Power supply Vdc (from VA40 or network) Test button For VA40 and CR5 devices Silence button Acoustic alarm silencer LED signal For power supply, insulation fault, over-temperature and net overload Maximum consumption 1,5 VA Acoustic alarm 2400 Hz signal. 2 Hz intermittent Connections By screw. Maximum section Ø2.5mm Protection degree IP-40 Frontal IP-20 Rear Weight 200 grams Ambient temperature -10 to 60 C Maximum humidity 95% Storage temperature -25 to 80 C Test voltage 2,5 kv x 1 50 Hz Mounting In flush mounting plastic Standard box E503 Standards CEI-EN CEI-EN CEI 64.8/7-710 V2 CEI-EN IEC VDE 0413 part.8

6 5 / 8 4- INSTALLATION, CONFIGURATION AND USE 4.1- INSTALLATION: General connection diagram: The installation of the insulation control system must be carried out according to the following general connection diagram: Vaux:* RS485 serial port (optional) Vaux:* Input 2 (optional) Control Insulation link fail control Input 1 Current Input TA /5A (or PTC) VA40 Repeater panel CR5 Auxiliary relay output Repeater panel CR5 Auxiliary power supply Vaux: 115Vac Auxiliary power supply Vaux: 230Vac To other repeater panels CR5 CURRENT TRANSFORMER /5A ISOLATED GRID (IT-M) LOAD INSULATION TRANSFORMER Thermal s installation: s connection PTC s connection Bimetal thermal s connection PTC PTC R R Input 2 Input 1 Input 2 Input 1 PTC PTC R = 120Ω Input 2 bimetal thermal Input 1 bimetal thermal

7 6 / CONFIGURATION: Frontal view of the insulation monitoring relay VA40: Programming: Parameters setup: select the parameters, enable their configuration and reading in the display. The options are R, Z, T1, T2 and I. ENTER TO MENU: Press buttons C + B for 3 seconds >>> SET LED turns on. ACCEPT: Press button A (Enter) to select a value. When the last is reached, it returns to first. EXIT MENU: Do not press any button for 10 seconds.

8 7 / Regulation of alarm trigger levels: Minimum and maximum values are selected in order to configure the trigger threshold for the insulation monitoring relay. ENTER TO MENU: Press button B for 3 seconds >>> SET LED turns on. ACCEPT: Press button A (Enter) to select a value. When the last is reached, it returns to first. It only allows to access to the parameters enabled (see point 2.1). EXIT MENU: Do not press any button for 10 seconds INSULATION MONITORING RELAY USE: Parameters display. Maximum and minimum values: This option allows checking the enabled parameters, active outputs of the auxiliary relay and configured levels. ENTER TO MENU: Press buttons D + C for 3 seconds. CHANGE VALUE: Press button C (Enter) to select a value. When the last is reached, it returns to first. EXIT MENU: Do not press any button for 10 seconds Measurements display: Corresponds to the normal reading of the insulation monitoring relay. CHANGE VALUE: Press button C (Enter) to select a value. When the last is reached, it returns to first. It only allows to access to the parameters enabled (see point 2.1) Reset values: If reset, the settings return to the default values of the insulation monitoring relay. In order to reset the device enter to the parameters display menu. ENTER TO MENU: Press buttons D + C for 3 seconds. RESET: Press button B for 3 seconds. RES message will appear. Confirmation needed. RESET CONFIRMATION: Press button A. Reset confirmed. EXIT MENU: Do not press any button for 10 seconds.

9 8 / Error or alarm situation: If any repeater panel CR5 connected to the insulation monitoring relay is in alarm situation, a acoustic or visual alarm will activate. In that case, it can be deactivated by pressing the Silence button of the panel or the button B of the insulation monitoring relay Insulation error: The alarm is not disconnected until the insulation fault is fixed and/or the resistance value is again higher than the value configured in the insulation monitoring relay Temperature error: PT-100: The error situation remains while the temperature value is above the maximum level. There is a hysteresis below the level to get back into the correct operating temperature threshold PTC or bimetal thermal protection: The error situation remains while the PTC is in its state of higher resistance value (tendency to ) or the bimetal thermal protection is in its interruption state Overload error: The error situation remains while the current value is above the maximum level. There is a hysteresis below the level to get back into the correct operating temperature threshold Equipment checking: A checking can be carried out in order to test the correct operation of the insulation monitoring relay, the temperature s and the repeater panel. CHECKING START: Press button A. The checking starts and the insulation alarms activate.