Xtreme Power Conversion Corporation
E90 Service Manual
Page 34
Uninterruptible Power Supply
External cables and switch capacity inspection
• For power cable selection and connection method, please refer to the user manual and related specifica-
tion.
• Check if the breakers rated capacity of UPS input, Output and distribution cabinet are appropriate.
• Pay attention to the Neutral and Ground protection inspection:
• If the Neutral and Ground cable size meets the requirement?
• Neutral has separate input and output, connect to the same Neutral is not allowed.
• Check and confirm all the cabinets and cable ducts have been grounded according to the local provisions.
• If the bypass has different power source, please check if the short copper-bar of the internal mains and
bypass has been removed, do the connection correctly according to the users’ manual.
• If the battery breaker box is provided, check if the connection of it is correct.
• Check if the UPS input/output wiring is reasonable and the cable is not in contact with any sharp edges of
objects.
• If the user install the remote contact to realize the EPO function, make sure that the EPO cable is not inter-
ference by other main power signals to avoid UPS malfunction. About how to realize the EPO function by
remote contact, please refer to user’s manual.
• About other control cables connection, please refer to the relevant chapters of the user’s manual.
External auto switching and generator power distribution inspection
• Confirm that the ATS at the input side is three level switch, that is the Neutral cannot be cut off; if it is four
level, confirm that when transfer between two sources, neutral should meet on-before-off principle.
• If the AC and generator can be selected at the input side, please confirm the proper connection between
Neutral and Ground according to the relevant specifications.
• If the generator has dry contact, it is necessary to connect it to the generator dry contact of the monitor
board.
Battery inspection
The important security guidance when operating battery:
1) Battery exists danger of short-circuit and possibly causes burning due to the short-circuit current.
2) The voltage may reach 240VDC when battery connected in series, which has deadly danger. So keep
in mind to prevent electric shock.
3) The installation and operation of the battery must be carried out by professionals.
4) Note of eye protection to avoid accidental arc damage.
5) Remove all rings, watched, necklaces, bracelets and other metal objects.
6) The tools must be used with insulated handles.
7) Wear rubber gloves and protective aprons when do the battery operation.
8) If the battery has liquid leakage or housing damaged, place it in the ant-acid container and deal it
according to the local regulations.
9) If the electrolyte touches your skin, immediately wash it with a plenty of water.
10) The battery must be handled with reference to local environmental regulations.