CLASS 5870 ReactiVar Power Factor Capacitors AT6000/AT7000 Transient Free Reactive Compensation

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1 CLASS 5870 ReactiVar Power Factor Capacitors AT6000/AT7000 Transient Free Reactive Compensation ReactiVar Transient Free Reactive Compensation Systems are ideal for use on sensitive networks Transient free switching of capacitor steps Electronic switching elements yield an unlimited number of switching operations Three different microprocessor controller options provide a choice in functionality and control sophistication LCD display on controller displays actual PF, alarms, number of steps energized and much more Heavy duty dry capacitor element design provides no risk of fluid leakage, no environmental pollution and no need for drip pans AT6000 s iron core reactors de-tune the network, prevent resonance and absorb up to 50% of the fifth harmonic AT7000 s heavy duty iron core reactors are tuned for harmonic filtering and may absorb up to 80% of the fifth harmonic energy Attractive finish: Units are constructed with removable 12 gauge steel panels over a 12 gauge steel frame. Indoor Type 1 units finished with ASA 49 gray polyester paint. ASA 61 available Standard enclosures available up to 1350 kvar, 480V, main lugs or main breaker Transient free reactive compensation (TFRC) systems are suitable for nearly all electrical networks and are ideal to correct poor power factor in electrical networks with a high concentration of electronic loads. Traditional electromechanical contactor switching of capacitors generates voltage transients that can impair the operation of sensitive process equipment. TFRC systems feature an advanced controller to precisely activate electronic switching elements to connect capacitor stages and avoid the creation of transients. Transient free switching also reduces wear on capacitors due to switching and will result in longer life for the overall capacitor system. With a response time of less than five seconds to load changes, TFRC systems reduce the kva demand on the transformer and will eliminate utility imposed penalties for low power factor. Depending on the level of harmonic producing (non-linear) devices on the network, two TFRC systems are available: the AT6000 anti-resonant (de-tuned) system and the AT7000 filtered system. Non-linear loads include variable speed drives, UPS systems, soft starters and other power electronic devices. The anti-resonant system will absorb up to 50% of the fifth harmonic current while the filtered system will absorb up to 80% of the fifth harmonic current, improving overall network conditions.

2 Selection & Dimensions AT6000 Series Main Lugs or Main Breaker 480 Volt, 3 Phase/60Hz + NEMA 1 Enclosure Top Cable Entry Nominal kvar Standard Lugs Standard Lugs Breaker Rating Steps Main Lugs Provided Main Breaker Current Provided (BT Hz 480V (Qty x kvar) Catalog No. Encl. (Qty x AWG) Catalog No. Encl. (Qty x AWG) Frame / Sensor Amps 225 1x75,1x150 AT022546CAAF6N 1 2x500 MCM BT022546CAAF8N 1 4x500 MCM 1200/ x150 AT030046AABF8N 1 4x500 MCM BT030046AABF8N 1 4x500 MCM 1200/ x75, 2x150 AT037546CAAF8N 1 4x500 MCM BT037546CAAF8N 1 4x500 MCM 1200/ x150 AT045046AABF8N 1 4x500 MCM BT045046AABF8N 1 4x500 MCM 1200/ x150 AT060046AABFAN 2 6x500 MCM BT060046AABFAN 2 6x500 MCM 1600/ x75, 4x150 AT067546CAAFAN 2 6x500 MCM BT067546CAAFAN 2 6x500 MCM 1600/ x150 AT075046AABFAN 2 6x500 MCM BT075046AABFAN 2 6x500 MCM 1600/ x150 AT090046AABFAN 2 6x500 MCM BT090046AABFAN 2 6x500 MCM 2000/ AT6000 Series Main Lugs or Main Breaker 480 Volt, 3 Phase/60Hz + NEMA 1 Enclosure Top Cable Entry Nominal kvar Standard Lugs Standard Lugs Breaker Rating Steps Main Lugs Provided Main Breaker Current Provided (BT Hz 480V (Qty x kvar) Catalog No. Encl. (Qty x AWG) Catalog No. Encl. (Qty x AWG) Frame / Sensor Amps 225 1x75,1x150 AT022547CAAF65 1 2x500 MCM BT022547CAAF85 1 4x500 MCM 1200/ x150 AT030047AABF85 1 4x500 MCM BT030047AABF85 1 4x500 MCM 1200/ x75, 2x150 AT037547CAAF85 1 4x500 MCM BT037547CAAF85 1 4x500 MCM 1200/ x150 AT045047AABF85 1 4x500 MCM BT045047AABF85 1 4x500 MCM 1200/ x150 AT060047AABFA5 2 6x500 MCM BT060047AABFA5 2 6x500 MCM 1600/ x75, 4x150 AT067547CAAFA5 2 6x500 MCM BT067547CAAFA5 2 6x500 MCM 1600/ x150 AT075047AABFA5 2 6x500 MCM BT075047AABFA5 2 6x500 MCM 1600/ x150 AT090047AABFA5 2 6x500 MCM BT090047AABFA5 2 6x500 MCM 2000/ Each stage in the AT6000 system is tuned to 4.2nd harmonic as standard and AT7000 is tuned to 4.7th harmonic. Other tuning frequencies are available. Please contact PQC Group for more information + A single remote Current Transformer (NOT included) must be located on the bus/cable at the main service entrance terminal compartment. Required CT ratio must be specified at the time of order. Split core CT is optional (please specify size and rating when entering order) NEMA Type 3R enclosure is available. Contact PQC Group for details Contact PQC Group for special sizes, ratings, and options Top cable entry is standard. Contact PQC Group for other cable entry options Nominal 60 Hz capacitor current draw based on bank effective kvar rating (including reactor effect). Consult all applicable electric codes for proper sizing of cables and upstream protection device All trip modules are equipped with dial pickup setting Dimensions x and weights Encl. Sections Width Depth Height 2 Weight IN mm IN mm IN mm lb kg x Dimensions are approximate and are not to be used for construction. Contact PQC Group for actual dimensions based on exact system requirements Approximate weights of the assembly with all sections filled to the maximum capacity Excluding side mounted fan 2 Excluding cable entry box 5

3 The Transient Free Solution Conventional automatic power factor correction is performed by a microprocessor-driven controller which energizes capacitors via electromechanical contactors to supply reactive power compensation to meet a target power factor. Contactor-based switching is not suitable for sensitive networks Transients generated by contactor-based switching can affect the proper operation of sensitive equipment including programmable logic controllers, variable speed drives, computers and UPS systems. Networks featuring these devices are typically found in: hospitals, data processing centers, airports and many manufacturing environments. In these networks, a voltage transient, however slight, may not be acceptable. TFRC systems feature precisely controlled electronic switching elements to avoid capacitor switching transients. Capacitors are kept precharged at all times and connection to the network is performed when the capacitor precharge voltage matches the network voltage to achieve a transient free switch. As a result of transient free switching, the electronic switching elements and capacitors experience minimal wear. This fact ensures longer life of the capacitor system and makes TFRC systems ideal for almost all electrical networks. Harmonics produced by non-linear loads Harmonics created by non-linear devices on the network may be magnified significantly when standard, fixed or automatic capacitors are added to the network. A condition known as resonance can cause serious problems such as excessive voltage distortion, nuisance fuse and breaker operation, overvoltage tripping of drives, and insulation breakdown within motors, transformers and conductors. To deal with the sensitive electrical networks featuring harmonic-producing devices, TFRC systems are available in two formats. AT6000 or AT7000 which system is required? The AT6000 anti-resonant (de-tuned) system is designed to provide power factor correction in virtually all networks and will reduce the normally dominant fifth harmonic by up to 50%. If harmonic conditions are severe and are causing any of the problems mentioned above, an AT7000 filtered system may be beneficial to further reduce the levels of fifth harmonic energy kvar, 480V Transient Free System with Main Breaker Figure 2: Magnification of Harmonic Current when Standard Capacitors are Added to the Network Figure 1: Harmonic Currents from Non-linear Loads Figure 3: Effect on Harmonic Current when Anti-resonant Capacitor Bank is Applied 2

4 TFRC Components Solid state capacitor switching modules Solid state capacitor switching modules provide reliable, high speed, transient free operation. Each capacitor switching module switches up to three capacitor steps using double phase electronic switches for each three phase capacitor step. High interrupting capacity fuses protect the electronic switches against short circuit capacitor currents while reactors further suppress the initial inrush current when first energizing the capacitor steps. Electronic Switch Structure Switching Module Heavy Duty Capacitor Heavy duty performance and unsurpassed safety Merlin Gerin Varplus2 capacitors have a unique patented design that has been developed based on the Varplus M capacitor design that was in service for over 20 years with several million elements installed around the world. Advances in materials and design provide reliability, safety and longevity unsurpassed in the industry: The HQ (High Quality) protection system provides protection against two types of end-of-life faults: High current faults are protected by an HRC cartridge fuse; low current faults are protected by a combination of the overpressure disconnect device and the HRC fuse The self-healing metalized polypropylene film elements require no gas or liquid impregnation, meaning they are completely environmentally safe H Type cells used as standard are designed for the rigors of today s harmonic-rich networks. Elements for 480V network are rated 550V; elements for 600V network are rated 690 The unique cell design encapsulated the elements in a polyphenylene plastic housing mounted on a moulded polycarbonate plastic base. These plastics virtually eliminate the chances of ground faults originating from the cells. Furthermore, the design of the cells leads to better heat dissipation resulting in cooler operation and longer life Iron core tuning reactors Custom-designed iron core tuning reactors are manufactured under tight tolerances. Features include: EI laminated low hysteresis iron core with precision controlled air gaps Rectangular cross section three phase windings consisting of Class H insulated all copper conductors Epoxy resin impregnated and baked reactor assembly providing superior insulation and additional mechanical bracing Heavy steel welded yoke to clamp the top and bottom laminations as opposed to traditional bolt through clamping Iron Core Tuning Reactor 3

5 VarLogic NR12 VarLogic NRC12 Advanced controller offers user-friendly interace With their ergonomic design, tree VarLogic power factor controllers offers a sophisticated electronic interface to facilitate ease of set-up, installation and commissioning, and different features for added flexibility. VarLogic NR12 features Automatic C/K ratio selection Automatic phase rotation polarity detection and CT polarity retrieval Automatic no-voltage release and automatic staged reconnection in the event of a power outage Alarm relay and indication for: low power factor, hunting, abnormal power factor, overcompensation, undervoltage, overvoltage, overcurrent, frequency not detected, high voltage THD, capacitor overload, low capacitor output and over temperature Integral alphanumeric LCD display with graphical symbols includes display of: power factor, steps connected, period before switching, step configuration (auto, fixed, not used), step output status, real and reactive currents and THD voltage VarLogic NRC12 features In addition to the functions of the VarLogic NR12, the VarLogic NRC12 provides the following additional features: Measurement of total current harmonic distortion Harmonic spectrum for current and voltage Step condition monitoring (capacitance loss) Online user help menus Optional RS485 Modbus auxiliary communication module How can power factor correction and harmonic control save you money? Most utilities charge for peak electrical demand on each month s electrical bill. The demand charge is present to allow the utility to recoup part of their capital investment in the distribution network they operate. Each customer pays a demand charge for their peak operating load-in effect, the load for which the utility must size its distribution equipment to reliably feed the customer at all times. Often inherent in the structure of the these demand charges is an allowance for some inefficiency but most utilities will offer an incentive to their customers to keep electrical efficiency (measured by power factor) high. Power factor correction devices improve overall electrical efficiency upstream of their point of connection in the electrical network and can be used to minimize utility demand charges. Any capital investment in power factor correction equipment will result in a return of investment dependent on the utility s demand rate structure. Of course, demand charge savings are only one of the benefits of adding a AT6000 or AT7000 capacitor system. Other benefits include: Transformer and distribution network offloading. Improving power factor reduces KVA loading of the distribution network such that additional process equipment may be added without the need for incremental investment in transformers and distribution equipment Ensuring compliance with harmonic standards. Standards limiting a customer s harmonic pollution of the utility grid exist and can be enforced by the utility Improved reliability of the distribution network and process equipment. Harmonics generated by non-linear loads can cause problems with sensitive process equipment leading to downtime and scrap. In addition, the distribution network may suffer from problems such as nuisance breaker or fuse operation, and overheating and insulation breakdown within motors, transformers and conductors 4

6 Options and Wiring Diagram Other Reactivar products and services LV fixed capacitors (Class 5810) AV4000 and AV5000 LV standard automatic capacitor banks for power factor correction of electrical networks with less than 15% nonlinear load content (Class 5830) AV6000 anti-resonant and AV7000 filtered banks for power factor correction in harmonic rich environments (Class 5860) AccuSine PCS active harmonic filters (Class 5820) Hybrid VAR compensators for improved voltage regulation and power factor correction of highly cyclical loads (Class 5890) Medium voltage fixed capacitors up to 5kV (Class 5840) Medium voltage metal enclosed capacitors up to 15kV (Class 5841) Engineering services available: Size and rating assistance Harmonic analysis Computer simulations Commissioning Service contracts Consult your nearest Square D sales office for pricing Important application note: It is imperative to ensure that no other capacitors (fixed or automatic) are connected to the same network as the AT6000 or AT7000 transient free reactive Compensation System. The components within these banks are carefully chosen to avoid network resonance between the substation transformer and the capacitor elements. Additional capacitors in the network will alter the characteristics of the AT6000 or AT7000, possibly leading to network resonance. The application of this product may warrant special consideration. It is highly recommended that you contact the Square D Power Quality Correction Group for application assistance. Trained specialists are available to assess your needs and make recommendations to ensure that the most effective solution is provided. Our specialists can provide telephone application assistance and arrange for a site visit. Specifications are subject to change without notice. Visit our website at Schneider Electric - North America Standard features and available options AT6000 AT7000 Silver Flashed Copper Bus Copper Power and Control Wiring Heavy Duty Capacitor Elements Iron Core De-tuning Reactors Iron Core Filter Reactors Control Power Transformer with Class A Ground Fault Protection VarLogic NR12 Stage controller VarLogic NRC12 Advanced controller RS485 Modbus Communication Module Fans with Thermostat Heaters with Thermostat Ambient Overload Protection CT Shorting Block Main Lugs Main Breaker Top Cable Entry Bottom Cable Entry Type 1 Indoor Enclosure Type 3R Outdoor Enclosure ASA 49 Gray Paint ASA 61 Gray Paint (Type 1 and 3R) PowerLogic Circuit Monitor Special Control Arrangements Custom Staging Ratios Fixed Stages Other Voltages and Frequencies Standard feature Available option Contact Square D for pricing N/A Not available N/A 2006 Schneider Electric. All rights reserved. lj Power Quality Correction Group Head Office 3220 Caravelle Drive 295 Techpark Drive Mississauga, ON L4V 1K9 Suite 100 Tel: (905) LaVergne, TN Fax: (905) Tel: (615) Order Number 5870BR