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Inspection and Installation

⚫ When connecting the instrument which rated power is 6kVA or above

The 15kVA power supply is equipped with a standard four-core power cord. The

30kVA power supply is equipped with two four-core power cords, which are

connected to the AC input terminals of the two modules respectively.

The AC input is three phase and balanced, connecting the power cord as below.

Connecting the power cord

1. Confirm that the switch of the AC power distribution box is off.

2. Confirm that the power switch is in the OFF position and verify that there is

no dangerous voltage on the connection terminals.

3. Remove the protective cover outside the AC input terminal on the rear panel.

4. Connect one end of the power cable’s round terminal to the AC power input

terminal on the instrument’s rear panel.

a) You only need to connect the red/green/yellow (or brown/black/gray)

live wires to the terminals on the rear panel, which are not required to

correspond to L1, L2 and L3 terminals one by one.

b) The yellow-green wire is grounding wire, which is connected to the

protective grounding terminal (PE).

5. Mount the protective cover back to its original position.

6. Refer to the suggestion connection diagram, connect the other end of the

power cable to the required AC distribution box.

Connect the two power cables of the IT7830-350-180 to the power distribution

box.

2.5 Connecting Test Lines ( Optional)

Test lines are not standard accessories of the instrument. Please select optional

red and black test lines for individual sales based on the maximum current value.

For specifications of test lines and maximum current values, refer to

“Specifications of Red and Black Test Lines” in “Appendix”.

⚫ Before connecting test lines, be sure to switch off the instrument.

Power switch is in Off position. Otherwise, contact with output

terminals in rear panel may cause electrical shock.

⚫ To avoid electrical shock, before testing, please make sure the

rating values of the testing lines, and do not measure the current

that higher than the rating value. All test lines shall be capable of

ITech IT7800 Series User Manual

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