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Smart Tower UPS 10-30KVA User Manual
Chapter 2 Installation Guidance
7
3. Connect the input earth wire to input earth terminal. Note: the earth wire connection should comply
with the local and national regulations
4. When the input of UPS rectifier and bypass adopt a same power supply, AC input cables should be
connected to the UPS input terminal (Main input
A-B-C-N), the output load cables should be
connected to the UPS output terminal
(Output A-B-C-N). When there are two ways electric
supply inputs, connect the power cable for UPS rectifier and bypass respectively, main input
terminal of UPS (Main input
A-B-C-N) and the input terminal of the bypass, and at the same
time remove the short circuit copper bars of the main and the bypass; For the cable tight,
the required force moment including
30kg (M5), 50kg (M6), 180kg (M8) and 260kg (M10).
Attention ensures the power cable phase sequence consistent and there is no circuit short at any
joint of cable terminals.
5. Connect the battery cables between the UPS battery terminals and the battery switch. ENSURE
battery cable CORRECT polarity connection.
Warning-Hazardous battery terminal voltage exceed of 400Vdc
Ensure the connection from battery terminals to battery Circuit breack and to UPS terminals polarity
consistance: Positive terminal to positive terminal, negative terminal to negative terminal, and
disconnect one or more than one cables every battery layer.Do not connect the cables and the battery
circuit breakers without approval from the trained and qualifiied commissioning engineer.
6. Re-install all the protective cover plates
2.5.3 Connection of Battery (Only Applicable to Build-in Battery UPS model)
The below 30KVA UPS contain battery build-in model, in which there is an internal battery breaker.
At the same time, the UPS also offers external battery connection terminals. When choosing external
battery, it should be added an extra battery breaker between the UPS and the external battery bank
Users can choose below 30KVA UPS with or without build in batteries (40*12AH), Customer can
install the battery and connect the battery cables according to the actual situation. We also provide the
battery cables as an option for customers to choose. The method of build-in batteries connection shown
as following fig. 2-5: