Siemens SENTRON PAC4220 - Page 84

Voltage input
Selection

Range

Factory setting
Connection type
• 3P4W
3phases, 4conduct
or
s, unbalanced load
• 3P3W
3phases, 3conductors, unbalanced load
• 3P4WB
3phases, 4conductors, balanced load
• 3P3WB
3phases, 3conductors, unbalanced load
• 1P2W
1phase, 2conductors, unbalanced load
3P4W
Use PTs?
•
ON: Measurement using voltage transformers.
When measur
ing via voltage transformer, the device must
know the voltage transformation ratio. For this purpose,
the primary and secondary voltages must be speci󹪝ed in
the 󹪝elds "PTPRIMARY" and "PT SECONDARY".
When changing from direct measurement to measure‐
ment using voltage transformers, the device accepts the
last set reference measuring voltage as the secondary volt‐
age and as the primary voltage.
•
OFF: Measurement directly on the low-voltage system.
When changing fr
om measurement using voltage trans‐
formers to direct measurement, the device accepts the last
set secondary voltage as the reference measuring voltage.
OFF
Measuring voltage
• 1V ... 690V, freely adjustable (max. 600V for UL) • 400V
PTPRIMARY
(pr
o
vided Use PTs?
ON)
• 1V ... 999999V, freely adjustable • 400V
PTSECONDARY
(pro
vided Use PTs?
ON)
• 1V ... 690V, freely adjustable (max. 600V for UL) • 400V

Current input
Selection

Range

Factory setting
CTPRIMARY Primary current of the current transformers
1A ... 99999A
50A
CTSECONDARY Secondary current of the current transformers
•
1A
•
5A
5A
Parameterizing
7.1Parameterizing via the operator interface
PAC4220
82 Equipment Manual, L1V30827278B-01