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Cautions
Safety Precautions
(i)
CAUTION
• 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
(ii)
CAUTION
• 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
wristband.
- 1043 -
6F2T0207 (0.01)
GRE200 (5,6)
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