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HT33 Series User Manual
Warning
FAILURE TO FOLLOW ADEQUATE EARTHING PROCEDURES CAN RESULT IN EMI, ELECTRIC
SHOCK HAZARD OR RISK OF FIRE, SHOULD AN EARTH FAULT OCCUR.
。
2.5.2 Cable Connection
Important
The operations described in this section must be performed by authorized electricians or qualified
technical personnel.. If you have any difficulties, do not hesitate to contact our Customer Service &
Support department .
After the equipment has been finally positioned and secured, connect the power cables as
described in the following procedures:
1.
Verify that all the external input distribution switches of the UPS are completely opened and the
UPS internal maintenance bypass switch is opened. Attach necessary warning signs to these
switches to prevent unauthorized operation.
2.
Open the back door of the cabinet, remove the cover and then the input and output terminal,
battery terminal and earth terminal are visible.
3.
Connect the input earth wire to input earth terminal. Please note: the earth wire shall be connected
in accordance with related local or state regulation
4.
If in UPS, same electric supply input is used for the by-pass and rectification, AC input cables
should be connected with the input terminal of UPS (Main input
A-B-C-N) and the output load
cables are connected with the output terminal of UPS
(Output A-B-C-N). If in UPS, two
electric supply inputs are respectively used for the by-pass and rectification, the AC input cables
should be respectively connected with the main input terminal of UPS (Main input
A-B-C-N) and
the input terminal of the bypass, and at the same time the short circuit copper bars of the
main circuit and the bypass are removed; fastening moment of force is
30kg(M5), 50kg(M6),
180kg(M8) and 260kg(M10). Attention is given to phase sequence and the short circuit at a joint
between cable terminals.
5.
Connect the battery cables between the UPS battery terminals and battery switch.
ENSURE
CORRECT PHASE ROTATION.
Warning-Hazardous battery terminal voltage of 400Vdc
Ensure the correct polarity connection between the battery terminals and the UPS terminals: Positive
terminal to positive terminal, negative terminal to negative terminal, and disconnect one or more than
one cable between every two layers of batteries.Do not connect the cables and close the battery
circuit breakers before getting the approval from the commissioning engineer.
6.
Re-install all the protective covers.
2.5.3 Connection for Battery (Only Applicable for the UPS with Build-in Battery)
For the type below 30KVA with build-in battery of HT33 series UPS, there is an internal battery
breaker in the UPS. Also, this type UPS offer external battery connection terminals. If customers want to
use external battery, they should fix a battery breaker between the UPS and external battery.
Customers can choose the type below 30KVA with build-in battery (40*12AH) of HT33 series UPS,
they also can install the battery and connect battery cables by themselves, The franchiser will provide
battery cables as optional components for customers selecting. The method of build-in battery
connection as shown fig. 2-5: