ITech IT7900P Series User Manual page 28

The yellow-green wire is grounding wire, which is connected to the PE terminal
of power input on the rear panel; the others are live wires, which are
correspondingly connected to the L1, L2 and L3 terminals of power input on the
rear panel of the instrument.
AC Power Input Level
The AC input of this series is a three-phase AC power (three-phase four-wire)
by default, and the model of 5kVA power supply can support single phase AC
power input. See the table below for specific model descriptions.
AC input requirements and output power derating:
AC Input
Voltage Level
5 kVA
6 kVA
9 kVA
12 kVA
≥15 kVA
Connecting the Power Cord
⚫
please take care for balanced current distribution on three phases. For single
unit, it supports single phase input, and it requires single phase or three phases
of AC distribution box (the rated AC current on L3 is 0, so, it can be connected
or not). In case multiple units are connected to the same main AC distribution
box. It is recommended to follow the suggestion connection diagram as below.
Single phase input connecting:
NOTE
IT7930P-350-180 is standard equipped with two power cords.
1-Phase (V
（200-220）±10%
3 kVA
Not support
Not support
Not support
Not support
When connecting the instrument which rated power is 5kVA
Copyright ©ITECH Electronic Co., Ltd.
) 3-phase 4-wire (V
LN
（200-220）±10%
3 kVA
FS.
FS.
60%FS.
60%FS.
Installation
) 3-phase 4-wire (V
LL
（380-480）±10%
FS.
FS.
FS.
FS.
FS.
)
LL
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