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Installing AC Power Cables (Parallel System)
Install the cabinet.
6 kVA Single-Phase Input Single-Phase Output
1.
Ensure that the AC input and output
power cables on each UPS are
connected in the same phase sequence,
battery terminals are connected
correctly, and the bypass power cables
are connected in the same phase
sequence.
2.
Before cable connection, turn off all
circuit breakers in the parallel system.
1.
The UPS can generate large leakage
currents. A circuit breaker equipped with
a residual current device (RCD) is not
recommended. If leakage protection is
required, select a recommended circuit
breaker.
2.
Circuit breakers used for cable connection
need to be provided by the customer.
3.
When UPSs are connected in parallel, the
output parallel power cables of each UPS
must be at least 1 m long and the length
deviation must be less than ±10%. The
four cables must be connected at the
remote end.
4.
K: general AC input circuit breaker; K1:
UPS 1 input circuit breaker; K2: UPS 2
input circuit breaker; Q: general AC
output circuit breaker; Q1: UPS 1 output
circuit breaker; Q2: UPS 2 output circuit
breaker; B1–Bn: lithium battery circuit
breakers.
Installing Battery Cables (Parallel System)
UPS2000-H-(6 kVA–10 kVA) Quick Guide
10 kVA Single-Phase Input Single-Phase Output
Installing Communications Cables (Parallel System)
3
10 kVA Three-Phase Input Single-Phase Output
04
Verifying the Installation
No.
Check Item
1
If the input or output system is changed, ensure that the short-circuit copper bar status and cable connections at input and
output ports are correct.
2
The phase sequence of the input power is correct. Use a multimeter to check that the input and output are not short-circuited.
3
Cables and terminals are securely connected.
4
Battery cables and terminals are connected correctly, and voltages comply with industry standards.
5
The UPS is properly connected to the lithium battery string.
6
Input circuit breakers and load circuit breakers are OFF.
7
Power cables and signal cables are correctly identified.
8
The ground cable is reliably connected. The voltage difference between the neutral wire and the ground cable is less than 5 V
AC.
9
The build-out resistor is correctly installed.
The voltage range of the UPS upstream input circuit breaker is 80–280 V AC (phase voltage), and the rated frequency is 50
10
Hz/60 Hz.
11
The positive and negative voltages of the lithium battery measured by a multimeter ranges from 41 V to 51 V.
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