Regulations and standards
−42−
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The driver is not provided with the ground fault protection. Wire the product in accordance with “Wiring
example having considered ground fault protection.” Also observe the followings.
•
Earth leakage breaker: Rated sensitivity current 30 mA
•
Fault loop impedance: Equal to or less than the value in table
•
When connecting to a power supply of Overvoltage category III, use an insulation transformer to ground its secondary
side (N for single-phase, Neutral point for three-phase).
Driver power supply specications Fault loop impedance
Single-phase 100-120 V 500 Ω
Single-phase 200-240 V
Three-phase 200-240 V
1000 Ω
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Wiring example having considered ground fault protection
Single-phase 100-120 V, Single-phase 200-240 V
•
TN power distribution systems
Earth leakage
breaker
Driver
L
N
PE
L
N
Fault loop
•
TT power distribution systems
Earth leakage
breaker
Driver
L
N
PE
L
N
Fault loop
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