Toshiba GR-200 Series Instruction Manual page 940

Multi functional protection ied

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Safety Precautions

• The IED rack is provided with a grounding terminal.

Before starting the work, always make sure the IED rack is grounded.

• When connecting the cable to the back of the IED, firmly fix it to the terminal block

and attach the cover provided on top of it.

• Before checking the interior of the IED, be sure to turn off the power.

• Class 1 laser.

Failure to observe any of the precautions above may cause electric shock or malfunction.

Cautions on Tests

• While the power is on, do not connect/disconnect the flat cable on the front of the

printed circuit board (PCB).

• While the power is on, do not mount/dismount the PCB.

• Before the power is on, check the following:

Make sure the polarity and voltage of the power supply are correct.

Make sure the CT circuit is not open.

Make sure the VT circuit is not short-circuited.

• Transformer module is damaged due to an overcurrent or overvoltage.

• Clear test settings after the test; then, set original settings again.

Failure to observe any of the precautions above may cause damage or malfunction of the relay.

Before mounting/dismounting the PCB, take antistatic measures such as wearing an earthed

6F2T0200 (0.15)

GRE200 (1,2)

Chapters

Gre200-1 Gre200-2