Iek ВД1-63 MDV11-2-032-030 [11/13] Страница 11

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iEK CIRCUIT WHICH IS EITHER MEASURED WITH SPECIAL DEVICES OR DETERMINED BY CALCULATION IFTHE MEASURED VALUES ARE ABSENT IT IS IMPOSED TO TAKE THE LEAKAGE CURRENT ON THE BASIS OF 0 4mA PER 1A OF LOAD CURRENT AND THE CIRCUIT LEAKAGE CURRENT IS CALCULATED ON THE BASE OF 10 pA PER 1 M OF PHASE CONDUCTOR LENGTH ATTENTION AFTER VD INSTALLATION AND MOUNTING IT IS NECESSARY TO CHECK ITS OPERABILITY BY PRESSING TEST BUTTON INSTANT TRIPPING SWITCHING THE PROTECTED CIRCUIT OFF MEANS THAT THE UNIT IS CORRECT IT IS RECOMMENDED TO CHECK ITS OPERABILITY EVERY MONTH BY PRESSING TEST BUTTON IT IS RECOMMENDED TO TIGHTEN CONTACT SCREW TERMINALS ONCE EVERY6 MONTHS BECAUSETHEIR PRESSURETENDS TO WEAKEN BECAUSE OF CYCLIC VARIATIONS OF THE AMBIENT TEMPERATURE AND METAL FLOW OF THE TIGHTENED CONDUCTORS 5 5 Operation conditions operation temperature range from 25 to 45 C atmosphere relative humidity 50 at 40 C Permitted relative humidity 90 at 20 C base altitude 2000 m max operative position vertical or horizontal with the possible deviation up to 30 to any side 5 6 Magnetic field strength in the mounting place should not exceed 5 times value of intensity of terrestrial magnetism in any direction Possibility to use VD in conditions differ indicated in 5 5 and Table 1 should be coordinated with the manufacturer 6 Safety requirements 6 1 VD comply with class 0 in accordance with IEC 61140 and must be installed into distribution equipment having protection class no less than 1 7 Transportation and Storage Conditions and Disposal 7 1 Handling can be executed by any roofed transport in the original package ensuring protection of these products from mechanical damage impurity and moisture ingress 11

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