Toshiba GRL150-100 Series Instruction Manual page 3

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DANGER
• Current transformer circuit
Never allow the current transformer (CT) secondary circuit connected to this equipment to be
opened while the primary system is live. Opening the CT circuit will produce a dangerously high
voltage.
WARNING
• Exposed terminals
Do not touch the terminals of this equipment while the power is on, as the high voltage generated
is dangerous.
• Residual voltage
Hazardous voltage can be present in the DC circuit just after switching off the DC power supply. It
takes approximately 30 seconds for the voltage to discharge.
• Fiber optic
Invisible laser radiation
Do not view directly with optical instruments.
CAUTION
• Earth
The earthing terminal of the equipment must be securely earthed.
CAUTION
• Operating environment
The equipment must only used within the range of ambient temperature, humidity and dust
detailed in the specification and in an environment free of abnormal vibration.
• Ratings
Before applying AC current or the DC power supply to the equipment, check that they conform to
the equipment ratings.
• Printed circuit board
Do not attach and remove printed circuit boards when the DC power to the equipment is on, as this
may cause the equipment to malfunction.
• External circuit
When connecting the output contacts of the equipment to an external circuit, carefully check the
supply voltage used in order to prevent the connected circuit from overheating.
• Connection cable
Carefully handle the connection cable without applying excessive force.
• DC power
If dc power has not been supplied to the relay for two days or more, then all fault records, event
records and disturbance records and internal clock may be cleared soon after restoring the power.
This is because the back-up RAM may have discharged and may contain uncertain data.
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