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Terminal assignment
Observe the specified polarity when connecting: plus to plus and minus to minus.
The maximum wire length of the ZSI wiring is 400 m for a wire diameter of AWG 18 (2-wire conductor).
For ZSI connections between only WL circuit breakers, wire lengths of up to 1000 m are permissible if the conductor diameter is increased
to AWG 13.
The ZSI connections must consist of twisted pair cables or shielded cables.
The ZSI module allows connection of up to:
- 8 circuit breakers at the ZSI IN input and
- 20 circuit breakers at the ZSI OUT output
Note: Prior to testing the circuit breaker via primary injection and while 24v dc is applied to the trip unit and ZSI module, turn the rotary
switch to OFF. If this is not done, the trip unit will "remember" being part of the ZSI system and will always trip according to its ZSI time
(80ms) during a short-time overcurrent test instead of in its set delay.
Be sure to turn ZSI back on prior to re-energizing the system.
Terminal
Connection
TIE BRKR
Only for Tie Breakers;
Allows complete ZSI functionality in systems with tie breakers
ZSI IN
ZSI modules of downstream circuit breakers
ZSI OUT
ZSI modules of upstream circuit breakers
MV OUT
Signal to the medium-voltage level
Содержание UL 489
Страница 36: ...5 21 Frame size II 3000 A Frame size III 1 Holes 14 mm 0720 1 0721_nu ...
Страница 63: ...7 2 Horizontal connectors 0733_nu top view ...
Страница 64: ...7 3 Rear vertical connectors 0734_nu top view rear view ...
Страница 65: ...7 4 Front connectors 0736_nu front view top view ...
Страница 66: ...7 5 Front connectors and pressure wire terminals 0737_nu top view front view ...
Страница 67: ...7 6 7 2 Frame size II fixed mounted version 0494 3_nu ...
Страница 68: ...7 7 Class C always 0494 5_nu top view rear view ...
Страница 69: ...7 8 2500 0738_nu LH side view front view ...
Страница 71: ...7 10 7 4 Frame size III fixed mounted version 0495 1_nu LH side view ...
Страница 72: ...7 11 0495 2_nu top view top view ...
Страница 73: ...7 12 0495 3_nu top view rear view ...
Страница 75: ...7 14 7 5 Door cut outs fixed mounted circuit breaker Frame size I 0735_nu ...
Страница 76: ...7 15 Frame size II III 0496_nu ...
Страница 77: ...7 16 7 6 Frame size I draw out version 0745_nu ...
Страница 78: ...7 17 0746_nu rear view top view ...
Страница 79: ...7 18 0747_nu bottom view ...
Страница 80: ...7 19 0748_nu ...
Страница 81: ...7 20 0749_nu ...
Страница 82: ...7 21 7 7 Frame size II draw out version 0490 1_ul ...
Страница 86: ...7 25 7 8 Frame size III draw out version ...
Страница 87: ...7 26 ...
Страница 88: ...7 27 ...
Страница 89: ...7 28 7 9 Door cut outs for draw out circuit breakers Frame size I 0750_nu ...
Страница 91: ...7 30 7 11 External sensor for neutral conductor WLNCT2 ...
Страница 92: ...7 31 WLNCT3 ...
Страница 107: ...9 5 I tripping Ground fault tripping ...
Страница 256: ...15 12 Installing FS II and FS III 1 Socket head cap screw M5 with washer and nut 1 2 3 4 6 5 7 8 Size 4 5 Nm 45 lb in ...
Страница 307: ...22 2 Installing the door sealing frame Not for use with fuse carriages Catalog No Door sealing frame WLDSF 1 2 3 ...
Страница 351: ......