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Summary of Contents for Avtron K711
- Page 1 AVTRON MODEL K711 LOAD BANK Part Number K711D36027 600 kW @ 480 VAC, 3-Phase, 60 Hz 50, 50, 100, 100, 100, 100, and 100 kW CFM REQUIRED: 61152 © 2004 Avtron Manufacturing, Inc. Cleveland, Ohio...
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Page 2: Table Of Contents
Section V MAINTENANCE ..................5-1 Section VI REPLACEMENT PARTS LIST ............. 6-1 APPENDIX - Avtron Load Bank Troubleshooting Guide SUPPLEMENTAL INFORMATION Avtron Bulletin 202 Installation Notes - Engine Generator Duct Type Load Banks Avtron Bulletin 203 Sample Calculations Engine Generator Duct Type Load Banks... -
Page 3: Section I
Avtron equipment. The Model K711 Load Bank is an industrial test unit designed to be used indoors safely. The unit will be installed in an enclosure. However, because the function of the Load Bank is the dissipation of electrical energy, there are inherent dangers to operators and equipment. - Page 4 Avtron Load Bank • Part Number K711D36027 Safety Considerations are not disconnected before servicing. Maintenance work must be done only by qualified personnel. The Load Bank must be used in a cool, well ventilated area as described in the INSTALLATION section of this manual. Do not allow exhaust air to recirculate through the Load Bank.
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Page 5: Description
3-phase voltage. The total load capability of the K711 Load Bank is 600 kW at 480 VAC, 3-phase, 60 Hz. Load steps are 50, 50, 100, 100, 100, 100, and 100 kW. Using the toggle switches on the control panel, any combination of the available load steps may be selected to achieve a desired load. -
Page 6: Installation
Installation Avtron Load Bank • Part Number K711D36027 SECTION III INSTALLATION INSTALLATION CHECKOUT PROCEDURE - TO BE DONE PRIOR TO OPERATION This Installation Checkout Procedure is intended to be used upon initial receipt of equipment and following any relocation of a permanent mounted Load Bank. These procedures apply to Load Banks in general and may include steps not relevant to the specific unit being installed. - Page 7 C A U T I O N Control wiring must be a minimum of 14 AWG for wire runs under 50 feet. Consult Avtron factory for wire sizing when wire run exceeds 50 feet. Confirm the correct wire gauge has been used for interconnection wiring. Control wiring should be a minimum of 14 AWG for control panel to Load Bank lengths of 50 feet or less.
- Page 8 Installation Avtron Load Bank • Part Number K711D36027 The Load Bank must be used in a cool, well ventilated area. It must be installed where cool air is continually available and where hot exhaust air will not be recirculated through the Load Bank. The Load Bank must not be operated in a closed space.
- Page 9 Installation Avtron Load Bank • Part Number K711D36027 LOAD CONNECTIONS Load connections are made to the main line power distribution bus bars. (Refer to Outline Drawing SB2203.) The connections are marked A, B, and C. Cables to the Load Bank should be of adaquate size to handle maximum rated load according to the National Electrical Code and any local codes.
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Page 10: Operation
Avtron Load Bank Operation SECTION IV OPERATION ************************************************************* C A U T I O N Never exceed the rated voltage as this will cause the Load Bank to overheat, resulting in damage to equipment. Do not apply DC voltages as the contactors do not have arc blowout magnets. - Page 11 Avtron Load Bank Operation The resistive loading is selected by toggle switches, using any one or combination of the toggle switches to make up a given load. By placing the MASTER LOAD switch to the ON position, the preselected load will be applied to the power source.
- Page 12 Operation Avtron Load Bank The automatic exerciser/controller circuitry within the Load Bank allows for the generator to be exercised on a programmable, weekly basis. A programmable weekly timer (K216) is installed on control panel D36083. During a programmed test cycle, a contact closure from K214 at TB1(17-18) will start the engine generator. K214 is a “delay-off”...
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Page 13: Maintenance
Maintenance Avtron Load Bank • Part Number K711D36027 SECTION V MAINTENANCE To provide long equipment life and to reduce the chance of electric shock, fires, and personal injury, good maintenance procedures must be used. Before servicing, review the SAFETY CONSIDERATIONS section of this manual. - Page 14 Maintenance Avtron Load Bank • Part Number K711D36027 Remove the access panels and screens, and inspect the load resistors for mechanical breakdown which is demonstrated by excessive sagging of the elements. Replace worn resistor elements with new resistor elements as required.
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Page 15: Replacement Parts List
REPLACEMENT PARTS LIST INTRODUCTION The parts list in this section contains the description, quantity required, and Avtron part numbers for each listed part. The list also includes, where appropriate, the manufacturer's name and part number, as well as schematic reference designators to facilitate parts identification. - Page 16 Avtron Load Bank • Part Number K711D36027 Replacement Parts List SCHEMATIC MANUFACTURER AVTRON QTY/ DESCRIPTION REFERENCE and PART NO. UNIT AVTRON MODEL K711 K711- LOAD BANK D36027 .SCHEMATIC/INTCON DIAGRAM D36028 .INSULATOR 411141 1728 .INSULATOR 411145 .RESISTANCE ELEMENT 606337 K1,2,3A-7A, .RELAY...
- Page 17 Avtron Load Bank • Part Number K711D36027 Replacement Parts List SCHEMATIC MANUFACTURER AVTRON QTY/ DESCRIPTION REFERENCE and PART NO. UNIT XF102-107 .FUSEBLOCK BUSSMANN 324615 BM6033SQ XF102,103 .FUSE, 3A, 600V LITTELFUSE 324453 KLDR-3 F104-106 .FUSE, 1A, 600V LITTELFUSE 324449 KLDR-1 K202,204,206, .RELAY, TIME DELAY...
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