Apply The Measuring Voltage; Apply The Measuring Current - Siemens SENTRON PAC4200 Manual

7.4

Apply the measuring voltage

SENTRON PAC4200 with wide-voltage power supplyis designed for measuring in systems
with a rated AC voltage up to
● 400 V phase-to-neutral (max. 347 V for UL)
● 690 V phase-to-phase (max. 600 V for UL).
See also
Apply the supply voltage (Page 86)
Measuring inputs (Page 21)
Safety notes (Page 67)
Safety instructions (Page 15)
7.5

Apply the measuring current

The device is designed for connection of current transformers with secondary currents of 1 A
and 5 A. It is only possible to measure alternating currents.
The current measuring inputs can each be loaded with 10 A continuously or with 100 A for 1
second.
Short-circuiting secondary connections of the current transformers
Will cause death, serious injury or considerable property damage.
Electric shock and danger of arcing in the case of open transformer circuits
It is only possible to measure the current with current transformers. The circuits must NOT
be protected with a fuse here! Never open the secondary circuit of the current transformers
under load. Short-circuit the secondary current terminals of the current transformer before
removing the device. The safety information for the current transformers used must be
followed!
SENTRON PAC4200
Manual, 09/2008, A5E02316180B-01
CAUTION
Observe limit values
The limits given in the technical data or on the type plate must not be exceeded even at
startup or when testing the device.
Measurement of DC voltage is not possible.
External voltage transformers are required to measure higher voltages than the
permissible rated input voltages.
DANGER
7.4 Apply the measuring voltage
Startup
95