Iek ВД1-63 MDV11-2-032-030 [10/13] Страница 10

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ÎEK pusher the tongue influences the VD tripping mechanism As a result VD power contact tripping occurs and the load is disconnected from the circuit 5 Terms Conditions of Safe and Efficient Use and Mounting 5 1 Mounting and operation should be carried out in accordance with the acting federal requirements of electrical safety rules as well as other normative and technical documentation regulating exploitation adjustment and maintenance of electrical facilities 5 2 Mounting and putting VDs into operation should be performed by qualified personnel having undergone the electrical safety training OPERATING VD WITHOUT THE SUCCESSIVE PROTECTION DEVICE MCB OR FUSES PRESENT IN THE CIRCUIT IS FORBIDDEN THE RATED CURRENT OF THE SAID PROTECTION UNIT SHOULD BE EQUAL TO THAT OF VD ATTENTION VD REMAINS OPERATING IF NEUTRAL WIRE IS BROKEN 5 3 VDs are installed onto top hat rails TH 35 according to IEC 60715 5 4 VD clamps are intended for connecting copper or aluminum single or multicore wires limited to 50 mm2 in section Their core should be prepared for connection in accordance with Industry Specific Construction Standards ISCS 139 83 This special preparation of conductors when connecting them to VD per currents over 32 V is binding Conductor core insulation should be stripped at 12 1 mm It is admitted to connect buses of PIN pin or FORK fork type on the side of the circuit connection ATTENTION CONNECTING TWO CONDUCTORS TO ONE OUTPUT WHEN THE SECTION OF ONE OF THEM EXCEEDS 25 mm2 IS PROHIBITED IT IS PROHIBITED TO INSTALL VD INTO AN ELECTRIC INSTALLATION WHEN IT IS UNDER VOLTAGE IT IS PROHIBITED TO TIGHTEN THE OUTPUT SCREWS WITH A JERK BEFORE PUTTING THE ELECTRIC INSTALLATION WITH VD INTO OPERATION IT IS RECOMMENDED TO CARRYOUT MEASUREMENTS OF BACKGROUND GROUND CURRENT LEAKAGES AT SIMULTANEOUS OF SUBSEQUENT TURNING ALL THE ELECTRIC LOADS ON RATED RESIDUAL BREAKING CURRENT OF VD SHOULD BE 3 TIMES HIGHER THAT THE TOTAL LEAKAGE CURRENT OF PROTECTED ELECTRIC INSTALLATION 10

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