Contents. Clean Control Center Harmonic Correction Unit. Selection Dimensions Specifications. Description

Transcription

1 lean ontrol enter Harmonic orrection Unit Technical Data Selection Dimensions Specifications ontents Description Page lean ontrol enter Specifications Harmonic orrection Unit Sizing and Selection Installation and Power ircuit Diagrams lean ontrol enter with Active Harmonic ontrol Ampere lean ontrol enter Layout Dimensions Ampere lean ontrol enter Layout Dimensions Guide Specifications lean ontrol enter For more information contact utler-hammer at:

2 Page 2 ffective: October 2001 Harmonic orrection Unit Specifications The lean ontrol enter utilizes a harmonic correction unit to provide harmonic cancellation directly on the Motor ontrol enter Horizontal Bus. The harmonic correction unit senses the load current and injects into the A lines a synthesized waveform that is inverted compared to the remaining signal. The result is a clean waveform as seen by the upstream electrical system. Single or multiple harmonic correction units may be applied within a lean ontrol enter providing an economical solution to excessive harmonics due to A drives or other non-linear loads. Use of the lean ontrol enter will provide compliance to the most stringent 5% Total Demand Distortion (TDD) requirements of I 519. Table 1. lean ontrol enter Harmonic orrection Unit Specifications Safety Agency lectrical nvironment UL: SA: Voltage: Frequency: Requires series input line reactor or D bus choke in each A drive for optimum performance. Sizing and Selection Ambient Temperature: Storage Temperature: Relative Humidity: Altitude: Vibration: Approved Approved V +/- 10% 50/60 Hz, +/- 3 Hz 0º to 40º nclosed -40º to 65º to 95% Non-condensing to 1000 Meters Seismic Zone 4 Packaging Standard nclosure: Motor ontrol enter NMA Type 1 Protection Input Fuses Molded ase Switch Disconnect: Surge Withstand apacity: Logic Ride-Through: Output apacity: 600V, 200,000 AI, lass T 150A (50/100A Models) I Seconds Upon Full Loss of Input Voltage Self-limited to 100% Rated Performance orrective apability: <5% TDD and Near Unity Displacement Power Factor Information/ontrol Display: Operators: Indicator LD: Information Diagnostics: Output ontacts: ommunications: 2 Line, 20 haracter/line Alphanumeric Run, Stop, Setup, nter Up and Down Scroll Run (green) nglish Power On, Run, Fault, at Maximum apacity RS-485 Port Table 2. Harmonic orrection Unit Ratings Model Voltage Frequency Total urrent Amperes (rms) Watt Losses (kw) xterior Dimensions in Inches (H x W x D) nclosure Type Shipping Weight (Lbs.) Disconnect (150A Molded ase Switch) HU050AM / x 24 x 21 M onstruction 385 X HU100AM / x 24 x 21 M onstruction 495 X lean ontrol enter model includes 24-inch wide M structure, current transformers and door-mounted digital interface panel. Note: urrent transformers are rated for 400 Hz. Two current transformers are required for 3-phase loads. Three current transformers are required when single-phase loads are present. Load(s) Source XFMR Typical T Placement A Lines Fuse Fuse Fuse Line Inductor Pre-charge ontactor Inductor S1 S3 S5 + Alternate T Placement HU Filter Board S2 S4 S6 Figure 1. Installation Diagram Figure 2. Power ircuit Diagram For more information contact utler-hammer at:

3 ffective: October 2001 Page 3 lean ontrol enter with Active Harmonic ontrol Typical Layout Source Side Harmonics Attenuated Load Side Harmonics Present Main Breaker Panelboard Harmonic orrection Unit 100A SV9000 A Drive (30 Hp) SV9000 A Drive (150 Hp) SV9000 A Drive (250 Hp) Starter TVSS Protection Module Distribution Transformer Starter SV9000 A Drive (30 Hp) Starter Feeder Breaker Figure 3. lean ontrol enter with Active Harmonic ontrol Dimensions in Inches The layout above is a typical arrangement for a lean ontrol enter including harmonic correction units for non-linear loads such as A Variable Frequency Drives. The horizontal bus of the lean ontrol enter is virtually free of harmonic current content at the point where the Harmonic orrection Unit connects to the bus. From this point to the connection at the utility bus, the lean ontrol enter complies with the most stringent requirements of I 519 and provides a clean waveform to the upstream distribution system. Harmonic orrection may be applied to loads fed directly from the M (e.g. M mounted A drives) or loads fed indirectly from the M (e.g. M mounted circuit breakers feeding remote A drives). Multiple correction units may be used to achieve the level of harmonic correction as required by the amount of non-linear loads within the M lineup. For more information contact utler-hammer at:

4 Page 4 ffective: October 2001 lean ontrol enter 50 Ampere Harmonic orrection Unit Layout Dimensions The HU050AM unit provides up to 50 amperes of harmonic correction current in a convenient and labor savings Motor ontrol enter package. M units include horizontal bus, molded case input disconnect, horizontal bus connected current transformers and digital operator panel for control, diagnostics and programming (609.6) 21.0 (533.4) 90.0 (2286.0) Figure Ampere lean ontrol enter Harmonic orrection Unit Dimensions in Inches (mm) For more information contact utler-hammer at:

5 ffective: October 2001 Page 5 lean ontrol enter 100 Ampere Harmonic orrection Unit Layout Dimensions The HU100AM unit provides up to 100 amperes of harmonic correction current in a convenient and labor savings Motor ontrol enter package. M units include horizontal bus, molded case input disconnect, horizontal bus connected current transformers and digital operator panel for control diagnostics, and programming (609.6) 21.0 (533.4) 90.0 (2286.0) Figure Ampere lean ontrol enter Harmonic orrection Unit Dimensions in Inches (mm) For more information contact utler-hammer at:

6 Page 6 ffective: October 2001 lean ontrol enter (Harmonic orrection Unit) Guide Specifications To reduce current harmonics and correct power factor on low voltage electrical systems. 1.0 General 1.1 Summary This specification defines the electrical and mechanical characteristics and requirements for harmonic correction units in order to meet 5% total demand distortion [TDD], and <5% total harmonic voltage distortion [THD(V)] levels at selected points within the electrical system. The harmonic correction assembly shall be UL 845 listed and integral to utler-hammer Series 2100 Motor ontrol enters. 1.2 Standards The harmonic correction unit shall be designed in accordance with the applicable sections of the following documents. Where a conflict arises between these documents and statements made herein, the statements made in this specification shall govern. ANSI I standard [surge withstand capacity] SA 22.2, No. 14 and 66 [SA requirements for power electronics] F Part 15, Sub Part J, lass A [RFI/MI emission standards] ANSI I standard [harmonic limits] UL 845 [UL requirements for motor control centers] I 529, IP20 (NMA 1) [type of enclosure] IBO Building ode, Section 16, Seismic Zone 4 [vibration standard] The products shall include third party approvals by UL or SA. 1.3 System Description System Description A. Voltage: 480V, 3-phase, 3-wire, plus ground. B. Output Load apacity: Rated capacity shall be the specified current capacity at the voltage required as indicated within this specification and shown on the respective electrical drawings included within this document.. Field Installable apacity Upgrade: Additional power correction capacity shall be added by installing additional units in parallel to previously installed power correction systems. A maximum of 3 units shall be installed in parallel per set of current transformers. D. urrent Transformers: 1. Split core type current transformers shall be installed as defined herein and shown in the electrical drawings contained in these documents. 2. Two current transformers per power correction system location are required and mounted on phases A and B. 3. A third current transformer is required if single- or 3-phase line to neutral connected loads are present downstream from the location of the Ts. 4. urrent ratings of the current transformers shall be according to full load current of the circuit on which installed. 5. urrent transformers rated for 400 Hz shall be used Modes of Operation A. The harmonic correction unit shall be designed to electronically inject harmonic current to cancel load produced harmonic current such that the upstream power harmonic current and voltage are reduced to below 5% TDD and 5% THD(V) as defined by ANSI I standard for load demand and voltage distortion limits. TDD as used herein refers to the total load demand of the applied circuit. The applied circuit may be a single non-linear load, an entire distribution bus load, or the facility load at the point-ofcommon coupling (P). B. Reactive current compensation (aka displacement power factor correction) shall be activated via a digital keypad/display mounted on the door of the enclosure. When reactive current compensation is activated, the harmonic correction unit shall first perform harmonic current correction and then use the remaining capacity to inject reactive current compensation to the specified level herein defined Performance Requirements A. Input Power: 1. Voltage: V, 3-phase, plus ground. 2. Voltage Tolerance: +/- 10% of nominal. 3. Frequency: 50/60 Hz, +/- 5%. 4. urrent Limit: 100% of rating. 5. Surge Withstand apability: ANSI/ I standard without damage. 6. Input Fuses: Rated at 200,000 AI (amperes interrupting capacity), lass T. B. Output Performance 1. Performance of the harmonic correction unit shall be independent of the impedance of the power source. All performance levels shall be attained whether on the A lines or backup generator or output of UPS. 2. Harmonic orrection: a. Limit 2nd through 50th order harmonic current to <5% TDD as defined in ANSI/I standard at each installed location. Harmonic levels for individual harmonic orders shall comply with respective levels established in ANSI/I standard b. Limit the THD(V) added to the electrical system immediately upstream of the power correction system location(s) to less than or equal to 5% as defined in ANSI/I standard The power correction system shall not correct for utility supplied voltage distortion levels. c. Reactive urrent ompensation: to.90 lagging displacement power factor. Leading power factor is not permitted. For more information contact utler-hammer at:

7 ffective: October 2001 Page 7. urrent Transformers 1. urrent transformers shall be rated for the total rated rms current of the total load at each installed location. 2. Two current transformers, mounted on phases A and B, are to be installed per location. 3. A third current transformer is required if single- or 3-phase line to neutral connected loads are present downstream from the location of the Ts. 4. ach current transformer shall have a current output of 5 amperes. urrent capacity of each current transformer shall be 5000, 3000, 1000 or 500, as required for the electrical system where installed. No other ratings are acceptable. 5. ach current transformer shall be rated for 400 Hz. 1.4 nvironmental onditions The harmonic correction unit shall be able to withstand the following environmental conditions without damage or degradation of operating characteristics or life. 1. Operating Ambient Temperature: 0º (32ºF) to 40º (104ºF). 2. Storage Temperature: -40º (-40ºF) to 65º (149ºF). 3. Relative Humidity: 0 to 95%, non-condensing. 4. Altitude: Operating to 1000 meters (3,300 feet). Derated for higher elevations. 5. Audible Noise: Generated by power correction system not to exceed 65 dba measured 1 meter (3 feet) from surface of unit. 6. Vibration: Seismic Zone Submittals Approval Submittals Submittals for approvals shall include: a. System configuration in a single line diagram. b. Size and weights of shipping units to be handled by installer. c. Dimensional drawings with installed weight and heat dissipation for each size provided. d. Detailed layouts of customer power and control connections. e. Detailed installation drawings including all terminal locations Delivery Submittals Submittals upon delivery of power correction system shall include: a. omplete set of corrected proposal submittal drawings. b. Two (2) sets of Installation and Operation Manuals. Manuals shall include a functional description of equipment with block diagrams, safety precautions, installation instructions, start-up instructions, and troubleshooting guide. 2.0 Product 2.1 onstruction A. The lean ontrol enter shall consist of a utler-hammer Series 2100 Motor ontrol enter and integral harmonic correction unit for the attenuation of harmonics induced by non-linear loads such as A Adjustable Frequency Drives. B. The harmonic correction unit for the lean ontrol enter shall be in a totally enclosed deadfront, free-standing M assembly. Structures shall be 90 inches high and 20 inches deep for frontmounted units. Structures shall contain a horizontal wireway at the top, isolated from the horizontal bus and shall be readily accessible through a hinged cover. Adequate space for conduit and wiring to enter the top or bottom shall be provided without structural interference.. An operating mechanism shall be mounted on the primary of each harmonic correction unit. It shall be mechanically interlocked with the door to prevent access unless the disconnect is in the OFF position. A defeater shall be provided to bypass this interlock. With the door open, an interlock shall be provided to prevent inadvertent closing of the disconnect. Padlocking facilities shall be provided to positively lock the disconnect in the OFF position with from one (1) to three (3) padlocks with the door open or closed. D. Harmonic orrection Units shall be disconnected from the power source by a molded case switch.. ach structure shall contain a main horizontal copper tinplated or copper silver-plated bus, with minimum ampacity of 600 amperes or rated up to 3200 amperes as shown on the drawings. The horizontal bus shall be rated at 65º or 50º temperature rise over a 40º ambient in compliance with UL standards. F. Buses shall be braced for 65,000 or 100,000 amperes rms symmetrical. G. All units shall meet Seismic Zone 4 vibration requirements when installed according to installation requirements defined herein. H. Motor ontrol enter units shall include lifting provisions by forklift truck and lifting lugs. I. All units shall include 200,000 AI rated fuses with lass T actuation. J. All units shall be provided with a grounding lug. Grounding by the contractor is to be performed according to local and national standards. K. The paint shall be ASA Operator ontrols and Interface A. All units shall include a digital interface model (DIM) that includes an alphanumeric display consisting of 2-lines with 20 characters per line. All information shall be in nglish. Operators include run, stop, setup, enter, and up/down scroll. B. The display shall provide operating data while functioning. Standard operating parameters available for display are A line voltage, total rms load current, harmonic current of load, reactive current of load, output harmonic and reactive current of power correction system.. When the output of the power correction unit is at full rated capacity, the display shall indicate an atmaximum capacity and actuate an at-maximum capacity relay. D. All fault conditions shall be displayed as they occur. Diagnostic information shall be provided in nglish and clearly indicate the nature of the fault.. The run pushbutton shall include a green LD. LD shall be lighted when unit is running. For more information contact utler-hammer at:

8 Page 8 ffective: October 2001 F. ontacts shall be provided for operator information for poweron, run, fault and at-maximum capacity. ach contact shall be rated for 1 ampere at 120/240 volts. One form contact shall be provided for each relay. G. An RS485 serial communication port shall be provided for remote control and diagnostic information. 2.3 Design A. ach unit of the harmonic correction units shall meet F Part 15, Sub Part J, lass A requirements for both radiated and conducted MI. B. All harmonic correction units shall be defined as a power electronic device consisting of power semiconductors that switch into the A lines to modulate its output to cancel detrimental harmonic and/or reactive currents. A D bus shall store power for power semiconductor switching. A microprocessor shall control the operation of the power converter.. ach unit shall be designed with a current limiting function to protect the semiconductors. When this level is attained, a message shall be displayed indicating the output capacity is at-maximum capacity and actuate the at-maximum capacity relay. Operation shall continue indefinitely at this level without tripoff or destruction of the power correction unit. D. Two distinct levels of faults shall be employed. Non-critical level faults will provide automatic restart and a return to normal operation upon automatic fault clearance. ritical level faults stop the function of the unit and await operator action. 1. Faults such as A line overvoltage, A line undervoltage, A line power loss, and A line phase imbalance shall be automatically restarted. Upon removal of these fault conditions, the power correction system shall restart without user action. Automatic restart will not occur if 5 faults have occurred in less than 5 minutes. During the fault condition, except line loss, the display shall state the type of fault and indicate that automatic restart will occur. The run relay and run LD shall be disabled. The fault relay shall not be enabled unless time out occurs. Upon A line loss, the power-on relay shall be disabled and no display shall be provided. 2. All other types of faults shall be considered critical and stop the power correction system. The display shall indicate the fault condition and stop. The run LD and relay shall be disabled and the fault relay enabled. User shall be required to initiate a power reset (turn power off and on) to restart the power correction system.. The logic of the harmonic correction unit shall monitor the load current by utilizing two (2) current transformers (Ts) mounted on phases A and B to direct the function of the power electronic converter. A third current transformer is required if single- or 3-phase line to neutral connected loads are present downstream from the location of the Ts. The ratio of the Ts must be entered into the logic via the digital keypad/display to calibrate the operation of the power correction system. The output of the current transformers shall be 5 amperes. F. Up to 3 harmonic correction units may be installed in parallel to inject current according to the information received from one set of Ts. The units will function independently. If one unit is stopped or faulted, the remaining units will adjust accordingly to maintain optimum harmonic cancellation levels up to the capacity of the remaining units. aton orporation utler-hammer business unit 1000 herrington Parkway Moon Township, PA USA tel: aton orporation All Rights Reserved Printed in USA Publication No. October 2001