
2711P-B15C1D6 A-B Power Board
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IN STOCK2711P-B15C1D6 A-B Power Board
Medium Voltage Testing Medium voltage insulation resistance (IR) or dielectric withstanding voltage (megger) tests should not be used to check solid-state control equipment. When meggering electrical equipment, such as transformers or motors, solid-state devices must be bypassed before performing the test. Even though no damage may be readily apparent after a megger test, the solid-state devices are degraded and repeated application of high voltage can lead to failure. Maintenance after a Fault Condition Opening of the short circuit protective device (such as fuses or circuit breakers) in a properly coordinated motor branch circuit is an indication of a fault condition in excess of operating overload. Such conditions can cause damage to medium voltage motor control equipment. Before restoring power, the fault condition must be corrected and any necessary repairs or replacements must be made to restore the medium voltage motor control equipment to good working order. Refer to NEMA Standards Publication No. ICS-2, Part ICS2-302 for procedures. Use only replacement parts and devices recommended by Rockwell Automation to maintain the integrity of the equipment. Ensure the parts are properly matched to the model, series and revision level of the equipment. After maintenance or repair of the equipment, always test the control system for proper functioning under controlled conditions (that avoid hazards in the event of a control malfunction). For additional information, refer to NEMA ICS 1.3, PREVENTIVE MAINTENANCE OF INDUSTRIAL CONTROL AND SYSTEMS EQUIPMENT, published by the National Electrical Manufacturers Association, and NFPA70B, ELECTRICAL EQUIPMENT MAINTENANCE, published by the National Fire Protection Association.
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