Connecting
6.2 Connections
SENTRON PAC4200
System Manual, 09/2009, A5E02316180B-02
85
Protecting the current measuring inputs
DANGER
Open transformer circuits will result in electric shock and arc flashover
Will cause death, serious injury or considerable property damage.
Only measure current with external current transformers. Do not use fuses for circuit
protection. Do not open the secondary circuit under load. Short circuit the secondary
current terminals of the current transformer before removing this device. The safety
information for the current transformers used must be followed.
Protecting the voltage measuring inputs
CAUTION
Non-fused voltage measuring points may lead to device and equipment damage.
Always protect the device with an IEC approved or UL listed 10 A fuse, circuit breaker or
supplementary protector.
Never short circuit the secondary connections of the voltage transformers.