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MAG/MNL145740(A)

INSTALLATION AND MAINTENANCE MANUAL

JOSLYN

P/N

1457-40

AC SURGE PROTECTOR

400 Y/230 V RMS, 3

φ

, 4 WIRE, GROUNDED WYE

5900 Eastport Blvd., Bldg. V

Richmond, VA 23231-4453

Telephone (804) 236-3300

Facsimile (804) 236-4040

Excellence in Systems Protection

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Summary of Contents for 1457-40

Page 1: ...N AND MAINTENANCE MANUAL JOSLYN P N 1457 40 AC SURGE PROTECTOR 400 Y 230 V RMS 3φ 4 WIRE GROUNDED WYE 5900 Eastport Blvd Bldg V Richmond VA 23231 4453 Telephone 804 236 3300 Facsimile 804 236 4040 Excellence in Systems Protection ...

Page 2: ...A dc L N 470 V L G N G 660 V Suppression Voltage at Protector Terminals with L N L G N G 5 kA 8 20 µs 980 V 1220 V 10 kA 8 20 µs 1080 V 1305 V 20 kA 8 20 µs 1560 V 1795 V Minimum Life with 10 kA 8 20 µsec per phase 2 000 Operations Maximum Surge Current Rating per phase 100 kA 8 20 µs per mode L N L G 50 kA 8 20 µs N G 100 kA 8 20 µs Operating Temperature Range 40C to 85C Maximum Operating Altitud...

Page 3: ...nds or loops in the wire Twist the wires together if possible The protector should be connected directly to the bus on the load side of the main service disconnect or subpanel If no tap is available on the bus it may be connected to a 60 amp circuit breaker A series connected protector can be located at any point on the load side of the main service disconnect See Figure 2 Wire Size The wire size ...

Page 4: ...ristors MOVs in parallel Each MOV has its own fuse The fuse will blow before the maximum surge current rating of the MOV is exceeded The fuses also help to balance the current distribution among the MOVs A replaceable fuse is provided for each phase to disconnect the protector module from the power source in the event of a continued overvoltage or excessive surge current The fuse may be blown by s...

Page 5: ...t have opened If one or more lights are off 1 Check the system voltage 2 Check the fuse 3 Replace the bulb if the fuse is intact and the system voltage is on If the system voltage is on and the fuse is intact and the bulb has been replaced and is still not on 1 Measure voltage between monitoring wire terminal located on terminal block of corresponding phase A B or C and neutral Voltage must read s...

Page 6: ...est again as above Tests of the neutral ground module can be made directly across the module terminals or at the main Neutral and Ground Terminals The service neutral conductor must be disconnected for this test The following DC varistor voltage values are considered acceptable L N L G N G 1 Factory specification for new Protector 420 to 520 Vdc 595 725 Vdc 2 Protector in Use 400 to 540 Vdc 565 74...

Page 7: ...MAG MNL145740 A 7 FIGURE 1 DIMENSIONS ...

Page 8: ...JOSLYN ELECTRONIC SYSTEMS CORPORATION MAG MNL145740 A 8 FIGURE 2 CONNECTION DIAGRAM ...

Page 9: ...JOSLYN ELECTRONIC SYSTEMS CORPORATION MAG MNL145740 A 9 FIGURE 3 INTERNAL CONFIGURATION ...

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