Siemens SIPROTEC 7SK80 User Manual

Technical Data
4.1 General Device Data
SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A4, Release date 08.2010
334
4.1 General Device Data
4.1.1 Analog Inputs
Current Inputs
1)
only in models with input for sensitive ground fault detection (see ordering data in Appendix A.1)
Temperature Detectors at the I/O 2 Extension Module (only 7SK805/7SK806)
Voltage inputs
Nominal Frequency f
N
50 Hz or 60 Hz (adjustable)
Frequency working range (independent of the
nominal frequency)
25 Hz to 79 Hz
Nominal current I
Nom
1A or 5A
Ground current, sensitive I
Ns
≤ 1,6· I
Nom
linear range
1)
Burden per phase and ground path
- at I
Nom
= 1 A
- at I
Nom
= 5 A
- for sensitive ground fault detection at 1 A
≤ 0.05 VA
≤ 0.3 VA
≤ 0.05 VA
Load capacity current path
- thermal (rms)
- dynamic (peak value)
500 A for 1 s
150 A for 10 s
20 A continuous
1250 A (half-cycle)
Load capacity input for sensitive ground fault detection I
Ns
1)
- thermal (rms)
- dynamic (peak value)
300 A for 1 s
100 A for 10 s
15 A continuous
750 A (half-cycle)
See chapter Temperature Detection
Nominal voltage 34 V – 225 V (adjustable) for connection of
phase-to-ground voltages
34 V – 200 V (adjustable) for connection of
phase-to-phase voltages
Measuring Range 0 V to 200 V
Burden at 100 V approx. 0.005 VA
Overload capacity in the voltage path
– thermal (rms) 230 V continuous

Siemens SIPROTEC 7SK80 Specifications

General

Brand	Siemens
Model	SIPROTEC 7SK80
Category	Protection Device
Language	English