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S&C PureWave AVC
600 V
Instructions for Installation and Operation
TABLE OF CONTENTS
Section
Qualified Persons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Read this Instruction Sheet . . . . . . . . . . . . . . . . . . . . . . 2
Retain this Instruction Sheet . . . . . . . . . . . . . . . . . . . . . 2
Proper Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Understanding Safety-Alert Messages . . . . . . . . . . . . . 3
Following Safety Instructions . . . . . . . . . . . . . . . . . . . . 3
Replacement Instructions and Labels . . . . . . . . . . . . . 3
Location of Safety Labels . . . . . . . . . . . . . . . . . . . . . . . 4
Enclosure Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Access Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Section Dimensions and Weights . . . . . . . . . . . . . . . . . 8
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Placement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Access to Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
S&C ELECTRIC COMPANY
Specialists in Electric Power Switching and Protection
Adaptive VAR Compensator
™
Page
Section
Conduit Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Output Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Completing the Installation . . . . . . . . . . . . . . . . . . . . . 18
Capacitor Stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Power-Electronic Switches . . . . . . . . . . . . . . . . . . . . . 20
Microprocessor Controller . . . . . . . . . . . . . . . . . . . . . . 20
Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Off-Line Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Shut Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Capacitor Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Inrush-Limiting Reactors . . . . . . . . . . . . . . . . . . . . . . . 23
Cooling of SCR/Diode Valves . . . . . . . . . . . . . . . . . . . . 23
Heat-Sink Temperature Sensors . . . . . . . . . . . . . . . . . 23
Surge Arresters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Frequency Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Instruction Sheet 656-500
September 20, 2004
Supersedes Instruction Sheet 656-500 dated 2-24-03
Page
©
2004
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Summary of Contents for S&C PureWave AVC
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Page 1: Table Of Contents
S&C PureWave AVC Adaptive VAR Compensator ™ 600 V Instructions for Installation and Operation TABLE OF CONTENTS Section Page Section Page INTRODUCTION CABLE CONNECTIONS Qualified Persons ......2 Conduit Requirements . -
Page 2: Introduction
Read this Instruction Sheet Thoroughly and carefully read this instruction sheet before installing or operating your S&C PureWave AVC. Familiarize yourself with “SAFETY INFORMATION” on pages 3 and 4. Retain this Instruction Sheet This instruction sheet is a permanent part of your S&C PureWave... -
Page 3: Safety Information
There are several types of safety-alert messages which may appear Messages throughout this instruction sheet as well as on labels attached to the PureWave AVC. Familiarize yourself with these types of messages and the importance of the various signal words, as explained below. Ç... -
Page 4: Location Of Safety Labels
SAFETY INFORMATION Location of Safety Labels Reorder Information for Safety Labels Location Safety-Alert Message Description Part Number Ç DANGER High Voltage! Keep Out DD260020B001 Ç CAUTION This Equipment is Powered By Three Separate Sources DD260021B001 Ç CAUTION Capacitors Inside Enclosure DD260022B001 656-500... -
Page 5: Security Provisions
SECURITY PROVISIONS Enclosure Security The PureWave AVC enclosure incorporates a number of features to minimize hazards to qualified persons and to the general public. Enclosures are fabricated from 11-gauge steel sheet and are free- standing and self-supporting. There are no externally removable side sheets, rear sheets, or roofs to invite removal. -
Page 6: Inspection And Handling
INSPECTION AND HANDLING Packing Each section of the PureWave AVC is shipped fastened to a wood skid. A plastic liner has been inserted underneath the section to pre- vent water or debris from entering the bottom during shipping or han- dling. -
Page 7: Handling
Failure to follow these precautions can result in serious per- sonal injury or equipment damage. The dimensions and weight of each section of the PureWave AVC are listed in Table 1. Each section can be lifted using an overhead crane or a forklift. -
Page 8: Dimensions And Weights
DIMENSIONS AND WEIGHTS Section Dimensions and Weights System Approximate System Weight (lbs.) Dimensions Number of Total System Control Capacitor Capacitor H (in.)1 1 1 1 Sections Weight (lbs.) KVAR Voltage Stages Section Section 1 Section 2 6,000 — — 6,000 5,500 —... -
Page 9: Installation
INSTALLATION Storage If possible, the PureWave AVC should be immediately installed in its permanent location. In outdoor applications, the space heaters should be energized at once, even if the device itself is not to be energized until later. If the PureWave AVC cannot be installed immediately, stor- age in a clean, dry room is recommended, especially for a unit designed for indoor installation. -
Page 10: Placement
INSTALLATION Placement 1. Note the positions of the control section and each of the capacitor sections. See Figure 3. Determine the section having working clearances most affected by adjacent walls or structures . . . this section should be placed first. 2. -
Page 11: Assembly
INSTALLATION Assembly If the sections have shipped unassembled, assemble them as follows: 1. Remove the wood panels attached to the ends of the sections. Con- nect adjacent sections using supplied hardware (eighteen ³⁄₈-16 1¹⁄₂ hex-head bolts, square flat washers, lock washers, and nuts). See Figure 5. - Page 12 INSTALLATION Rear bus splices Figure 6. Cutaway view between sections showing rear bus splices (left) and close-up of splice hardware (right). In some cases, multiple washers may be required to maintain a minimum ³⁄₄-inch air gap between hardware and adjacent buses or structure;...
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Page 13: Access To Interior
INSTALLATION 3. Install anchor brackets to secure the PureWave AVC to the pad or floor. At a minimum, there should be two brackets on the left side and two on the right side of the AVC, located approximately 6 inches from each corner. -
Page 14: Grounding
1. Connect the cable ground wires to the grounding system as appro- priate. 2. Connect the ground pad of the PureWave AVC to the facility system ground in accordance with the user’s standard grounding practice and local codes. See Figure 11. Use the equivalent of 4/0 copper (or cable sized in accordance with the user’s standard practice) in either... -
Page 15: Cable Connections
CABLE CONNECTIONS Conduit Requirements The size and quantity of conduits required is dependent upon the options ordered with the PureWave AVC. The PureWave AVC may be designed for connection using underground conduit or overhead race- way. Figure 12. Control section shown with output connections for underground conduit (left). Close-up of cable entry area behind control panel (right). -
Page 16: Output Connections
1. Open the door of the control section to access the output connec- tions. See Figures 12 and 13 and the drawings furnished. Note: The bus construction in the PureWave AVC is typically alu- minum. Terminal pads on components may be aluminum, copper, or copper alloy. - Page 17 flat, then back off one-half turn. Do not use lock wash- ers with Belleville washers. 2. Complete the phase connections to the PureWave AVC terminals. Thoroughly wire-brush aluminum contact surfaces to remove dirt or foreign materials as well as natural surface oxides. Immediately coat the surfaces to ¹⁄₂...
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Page 18: Completing The Installation
See Figure 14. 2. Close and lock all doors on the PureWave AVC. 3. Wipe down the exterior of the enclosure with a clean, damp cloth. Refinish any scratches or abrasions with S&C red-oxide primer and touch-up finish, which are available in aerosol spray cans. -
Page 19: System Overview
The PureWave Adaptive VAR Compensator is a solid-state switched capacitor bank which is connected in parallel with the variable reactive load. Depending on its kVAR rating, the PureWave AVC provides the total reactive power required by a variable reactive load within one cycle of the power frequency. -
Page 20: Main Components
SCRs needed to compensate for the reac- tive power requirement at that moment. Maximum compensation capability is determined by the total rated kVAR of the PureWave AVC. System voltage and current waveforms are used as references by the controller. -
Page 21: Operating Procedure
OPERATING PROCEDURE Start Up Upon energizing the PureWave AVC in RUN Mode, or after a power out- age, the microprocessor controller starts automatically; firing of the thyristors is prevented. A self-calibration routine is executed. Once the proper firing sequence of the thyristors has been determined, the Pure- Wave AVC goes into automatic steady-state operation. -
Page 22: Shut Down
1. Place the STANDBY/RUN switch on the control section in the STANDBY position. See Figure 16. 2. If a circuit breaker has been furnished in the PureWave AVC, press the OPEN push button on the control section. The circuit breaker can also be tripped remotely by means of the communication pack- age;... -
Page 23: Protective Devices
Normal operation will resume when the heat sink temperature cools. Surge Arresters The PureWave AVC is provided with high-energy MOV surge arresters that offer protection against transient overvoltages in the power sys- tem. The arresters are placed at the cable entrance.