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3.6.4 Connecting Power Cables
The steps of connecting power cables are as follows:
1. Verify that all the switches of the UPS are completely open and the UPS internal
maintenance bypass switch is open. Attach necessary warning signs to these
switches to prevent unauthorized operation.
2. Open the back door of the cabinet, remove the plastic cover. The input and output
terminal, battery terminal and protective earth terminal are shown in Fig.3-4 &Fig.
3-5.
Fig.3-4 connections terminals for 10/15/20kVA
Fig.3-5 connections terminals for 30kVA
3. Connect the protective earth wire to protective earth terminal (PE).
4. Connect the AC input supply cables to the Input terminal and AC output supply
cables to the Output terminal.
5. Connect the Battery cables to the Battery terminal.
6. Check to make sure there is no mistake and re-install all the protective covers.
Note: mA, mB, mC standard for Main input phase A,B and C; bA, bB, bC
standard for Bypass Input phase A,B and C.
Summary of Contents for EA990 G5 10
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