Installation (cont.)
Connection of power circuits
Before making connections, check that switches Q1, Q4S, Q3BP and Q5N are in the "open" position (toggle opposite the "O" mark).
General:
◗in the case of
◗for modular UPSs with an external maintenance bypass, switch Q3BP must be locked open;
◗the power cables for the connections between cubicles are not supplied;
◗open the doors and remove the lower terminal shields (secured by screws to the cubicle chassis) of the
◗connect the cables shown in heavy lines in the wiring diagrams shown previously to the terminals specified in the figures below;
◗each cubicle must be earthed;
◗the routing of the power cables is shown in the figures;
◗the auxiliary wiring is routed in troughs located nearby (not shown in the drawings);
◗outside the cubicles, separate the auxiliary wiring from the power cables;
◗all the cubicles must be interconnected for earthing, forming a mesh which is itself connected to the building structure and earthing electrode;
◗the connection drawings hereafter show the cubicles with doors open and terminal shields removed.
250kVA to 450kVA
| front view |
front
air extraction
rear
air admission
mains 1, mains 2, load
battery
air admission
450kVA | 450kVA |
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| rectifier |
| inverter |
| inverter |
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| inverter |
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| charger |
| stack |
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card |
| card | XR1 | XR8 |
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cage |
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| XR2 |
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| XR5 |
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| XM136 | ACOZ board | XR3 | XR6 |
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| board |
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| additional remote relay board |
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transformer |
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| mains 2 |
| load | |
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| battery |
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cable tie bar |
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connection |
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from below |
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trough (if applicable) |
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| uprights |
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| power cable routing |
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Page 16 - 6739381EN/JD
