索引
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2.9 PV
Ω
Measurement
To avoid electric shock, short circuits and damage to the
instrument, observe the following precautions:
• When measuring insulation resistance, dangerous
voltage is applied to the measurement terminals. Do
not touch the metal part of the test leads.
• Make sure that the measuring terminal has been
connected securely. The increased resistance of loose
connections can lead to overheating and fire.
• Do not touch the object measured immediately after
the measurement. High voltage charge may cause
electrical shock.
• Use discharge function of this instrument to discharge
the object measured after the measurement. (p.36)
• When you measure a solar panel, be sure to turn OFF
disconnect switches to remove the solar panel from
power conditioner.
• Do not attempt to measure insulation resistance on a
live conductor. Doing so could damage the instrument
or cause an accident that might result in injury or
death. Always turn off power to the conductor being
measured before starting.
• Solar panels always generate power and a dangerous
voltage during the day. Pay full attention to the
measurement not to cause any electrical shock.
• Do not directly touch metal parts of a connection box or
disconnection switches with your hand. High voltage
being generated may cause electrical shock.
• Maximum rated voltage between terminals of the
IR4053 is 1000 V DC/600 V AC. Do not use this
instrument for facilities using a voltage over 1000 V DC
or 600 V AC. Doing so may cause an electrical shock
or a failure.
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