Siemens SIPROTEC 7SD610 User Manual

4 Technical Data
320
7SD610 Manual
C53000-G1176-C145-4
4.1 General
4.1.1 Analog Inputs
Current inputs
Requirements for current transformers
Voltage inputs
Nominal Frequency f
N
50 Hz or 60 Hz (adjustable)
Nominal current I
N
1A or 5A
Power consumption per phase and earth path
- at I
Nom
= 1 A Approx. 0.05 VA
- at I
Nom
= 5 A Approx. 0.3 VA
Current Path Loadability
- thermal (RMS)
100 · I
Nom
for 1 s
30 · I
Nom
for 10 s
4 · I
N
continuous
- dynamic (pulse) 250 · I
N
(half-cycle)
1. Condition:
for maximum fault current, current transformers
must not be saturated stationary
2. Condition:
The operational accuracy limit factor must at least be 30 or
a non-saturated period t'
AL
of at least
1
/
4
must be ensured
n' ≥ 30
or
t'
AL
≥
1
/
4
AC cycle
3. Condition:
Maximum ratio between primary currents of current transformers at
the ends of the protected object
Nominal voltage U
N
80 V to 125 V (adjustable)
Measuring range 0 V to 218.5 V (rms)
Power consumption per phase At 100 V ≤ 0.1 VA
Voltage overload capability per phase
- thermal (RMS) 230 V continuous
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Siemens SIPROTEC 7SD610 Specifications

General

Brand	Siemens
Model	SIPROTEC 7SD610
Category	Relays
Language	English