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3. Installation instructions
3.1 Attention items of installation
●The UPS installation environment must be with good ventilation, away from water, flammable gases and
corrosive entities.
●Do not lie down the UPS against the wall so that front and side panel air intake hole, rear panel air outtake
hole will be unobstructed.
●The peripheral environment temperature around the UPS should be within 0
℃ ~ 40 ℃.
● If dismantling the machine at low temperatures, there may be condensation droplets, users can not install
or operate it before UPS completely got dry both inside and outside, otherwise there will be danger of
electric shocks.
● Place the UPS near the mains socket so that can cut off AC mains without any delay at any emergent case.
●Make sure the load connect to the UPS is off when users connect the load to UPS, and then turn on the load
one by one later.
●Please connect the UPS with the socket which is over-current protected. Do not connect the UPS with the
socket which rated current is less than the Maximum input current of the UPS.
●All the power socket should be configured with earthing device for safety.
●UPS could be electrified or powered no matter the input power cable is tied or not, even when the UPS is off.
The only way to cut off the output is switching off the UPS and disconnecting the mains power supply.
●For all standard type UPS, it is advised to charge the battery over 8 hours before used. Once the AC mains
power energizes the UPS, it will automatically charge the battery. Without prior charging, UPS output
remains as usual but with shorter back-up time than normal.
●When connected to motor, display equipment, laser printer etc, UPS power selection should be based on
the startup power of the load which is usually twice as rated power.
●When wiring, please ensure input cables and output cables are connected firmly.
●If install a leakage current protective switch, please install it on output cable.
●For EA900II 6-20K Series UPS, before installing, prepare wires for terminal block of the UPS based on the
following tables.
Model
Wiring spec
Three-phase
Input
Single-phase
Input
Output
Battery
Non-isolated
Neutral
Ground
6KVA S
6mm2
6mm2
6mm2
6mm2
6mm2
6mm2
6KVA H
6mm2
6mm2
6mm2
6mm2
6mm2
6mm2
10KVA S
10mm2
10mm2
10mm2
10mm2
10mm2
10mm2
10KVA H
10mm2
10mm2
10mm2
10mm2
10mm2
10mm2
15KVA H
16mm2
16mm2
16mm2
16mm2
16mm2
16mm2
20KVA H
20mm2
20mm2
20mm2
20mm2
20mm2
20mm2
Note: When connecting, please make sure to connect input cables and output cables with terminals firmly.
When the input is three-phase, if the UPS is working on Bypass mode, the total current goes through phase R,
so the line widths of phase R must be the same as output. When the input is single-phase, before doing input
connection, users have to use two short wires to connect R&S and S&T.
3.2 Output connection
Output connection is configured with terminal blocks. Make sure the mains wire and breakers in the building
are enough for the rated capacity of UPS to avoid the hazards of electric shock or fire.
