Pro-face GP-4114T, Руководство по установке

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Wiring
Improving Noise/Surge Resistance
• This product’s power supply cord should not be bundled with or kept close to
main circuit lines (high voltage, high current), power lines, or input/output
lines, and their various systems should be kept separate. When power lines
cannot be wired via a separate system, use shielded cables for input/output
lines.
• Make the power cord as short as possible, and be sure to twist the ends of
the wires together (i.e. twisted pair cabling) from close to the power supply
unit.
• If there is an excess amount of noise on the power supply line, connect a
noise reducing transistor before turning on the power.
• Connect a surge protection device to handle power surges.
• To increase noise resistance, attach a ferrite core to the power cable.
Power Supply Connections
• Use SELV (Safety Extra-Low Voltage) circuit and LIM (Limited Energy) circuit
for DC input.
• The following shows a surge protection device connection.
Attach a surge protection device to prevent damage to this product as a result
of a lightning-induced power surge from a large electromagnetic field
generated from a direct lightning strike. We also strongly recommend to
connect the crossover grounding wire of this product to a position close to the
ground terminal of the surge protection device.
It is expected that there will be an effect on this product due to fluctuations in
grounding potential when there is a large surge flow of electrical energy to
the lightning rod ground at the time of a lightning strike. Provide adequate
distance between the lightning rod grounding point and the surge protection
device grounding point.
Surge protection device
FG
This product
Lightning
Lightning rod
Ground
Provide adequate
distance.