User manual TOSHIBA HCV-5HA

[. . . ] Be skilled in the installation, construction or operation of the equipment and aware of the hazards involved. Be trained and authorized to safely energize, de-energize, clear, ground, lockout and tag circuits in accordance with established safety practice. Be trained and authorized to perform the service, maintenance or repair of this equipment. Be trained in the proper care and use of protective equipment such as rubber gloves, hard hat, safety glasses, face shield, flash clothing, etc. [. . . ] HCV-5HAL (Latched Type Only) Permissible Switching Frequency Mechanical Life Tripping Voltage Tripping Current 300/Hour 250, 000 Operations 40-60% Rating DC 4. 8 A DC Max Page 10 STRUCTURE Fig. 1 Construction of HCV-5HA & HCV-5HAL PRE-OPERATION SET-UP APPLICATION PRECAUTIONS 1) 2) Page 11 Verify that the voltage and current applied is within the specified ratings. When the contactor is used with an induction heater facility, the switching life of the vacuum interrupter is approximately 250, 000 operations. When the contactor is applied to a capacitor load, be sure to use a space heater to keep the temperature above the dew point and prevent condensation. Be sure to use a heater adequately sized for the compartment in which the contactor is installed. The contactor should always be applied with a protective power fuse. 3) INSTALLATION During installation, protect the contactor from dust and falling debris. The following precautions should be taken, 1) 2) 3) 4) The mounting surface should be horizontal (level: ±1 mm). In wiring the main circuit, wires should be given sufficient length to be flexible for service. Avoid touching the surface of the vacuum interrupter with soiled hands. If the interrupter becomes dirty, simply clean it with a non-tracking cleaner such as rubbing alcohol. Page 12 PRE-OPERATION SET-UP CONTROLS The drive unit for the closing coil assembly is installed in a cavity in the molded frame housing. The closing circuit can be operated by applying either AC or DC to this drive unit. When a latched contactor is operated using AC power, it is recommended that a capacitor trip device be used. 2 Control Voltage Selection for Closing Coils The following is a list of the available trip coil voltages for a latched type contactor: 24 V DC 125 V DC 32 V DC 250 V DC 48 V DC PRE-OPERATION SET-UP CONNECTION OF CONTROL POWER SUPPLY Page 13 Figures 3 and 4 show the internal connections of the magnetically held (normally energized) type and the latched type respectively. Connect control power and open/close control signals according to these connection diagrams. After mounting and wiring of the vacuum contactor, make the following inspections. For the latched type contactor, check that the latch correctly engages and trips when the close/trip signals are applied. Also, manually trip the contactor using the trip lever to verify proper operation. 6F9G0132 - Installation Instructions of Latch Kits for HCV-5HA. MAINTENANCE GENERAL INSPECTION MAINTENANCE AND INSPECTION Page 17 The following maintenance and inspections are recommended to maintain the performance level and extend the operational life of the vacuum contactor. BEFORE CONDUCTING MAINTENANCE AND INSPECTIONS, MAKE SURE THAT ALL POWER IS TURNED OFF. ITEMS FOR INSPECTION Table 3 CONTAMINATION DISCOLORATION LOOSE PARTS PARTS TO BE INSPECTED INSPECTION INTERVALS VISUAL CHECK ONCE A YEAR OR EVERY 20, 000 OPERATIONS INCOMPETE OPERATION INSPECTION ITEM MECHANISM SECTION VACUUM INTERRUPTER MOVABLE CONDUCTOR UPPER & LOWER TERMINALS MOLDED FRAME INSULATION FLANGE BEARING CLOSING COIL ARMATURE & CORE AUXILIARY SWITCH TRIP COIL ROLLER BOLTS & NUTS INSULATION WIRE MAIN CIRCUIT O O O O O O O O O O O O O O O O ELECTROMAGNET O O O O O O O O O O O OTHERS LATCH MECHANISM NOTE THE LIFE EXPECTANCY OF THE ELECTRICAL PARTS (VACUUM INTERRUPTER, AUXILIARY SWITCH) IS 250, 000 OPERATIONS VIBRATION SOUND CRACKS WEAR RUST O Page 18 MAINTENANCE Make Sure Power Is Turned Off. MAINTENANCE Location Maintenance Procedure Vacuum Interrupter Check the upper and lower flanges and interrupter shaft to see if they are contaminated or corroded. If the wear gauge can be inserted, then there is sufficient contact material available for continued use. [. . . ] The Company will, at its option, repair or replace such equipment or part which is defective under the terms of the foregoing warranty, free of charge; provided the purchaser (1) promptly notifies the Company in writing of such defect, and (2) furnishes the Company satisfactory proof thereof, and (3) establishes that the equipment or part has been properly installed, maintained and operated within the limits of rated capacity and normal usage and in accordance with this manual, and (4) if requested by the Company, returns the defective equipment or part to the Company and pays all expenses incurred in connection with such return. The repaired or replacement equipment or part will be delivered, free of charge, to the purchaser F. O. B. a Company authorized service shop, not loaded on truck or other carrier. The purchaser will pay the costs applicable to the equipment or part following such delivery, including, without limitation, all handling, transportation, assembly, insurance, testing and inspection charges. [. . . ]