Siemens SIPROTEC 7SJ62 Instruction Manual

Technical Data
10-32 7SJ62 Manual
C53000-G1140-C121-1
10.13 Frequency Protection (81 Over-Frequency and Under-Frequency)
Setting Ranges/
Resolutions
Number of Frequency Elements 4: each can be 81/O or 81/U
Pickup Frequency 81–1 to 81–4 45.50 Hz to 54.50 Hz (Increments 0.01 Hz)
@ f
N
= 50 Hz
81–1 to 81–4 55.50 Hz to 64.50 Hz(Increments 0.01 Hz)
@ f
N
= 60 Hz
Time Delay 81–1 to 81–4 0.00 s to 100.00 s (Increments 0.01 s)
or ∞ (does not expire)
Undervoltage Blocking V
min
40 V to 120 V (Increments 1 V)
(V
1
positive sequence voltage)
The set times are pure delay times.
Inherent Operating
Times
Pickup Times 81/O or 81/U approx. 150 ms
Dropout Times 81/O or 81/U approx. 150 ms
Dropout Frequency ∆f = | Pickup Value – Dropout Value | approx. 20 mHz
Dropout Voltage Dropout Ratio for
Undervoltage Blocking(V / V
min
) approx. 1.05
Tolerances – Pickup Frequencies 81/O or 81U 15 mHz
– Undervoltage Blocking 3% of set value or 1 V
– Time Delays 81/O or 81/U 1% of set value or 10 ms
Influencing Vari-
ables
Power supply DC voltage (V
DC
) in range
0.8 ≤ V
PS
/ V
PS nominal
≤ 1.15 0.1%
Temperature in range
23º F ≤ ϑ
amb
≤ 131º F 0.06% /10º F
Harmonics
- Up to 10% 3
rd
harmonic 1%
- Up to 10% 5
th
harmonic 1%
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Siemens SIPROTEC 7SJ62 Specifications

General

Brand	Siemens
Model	SIPROTEC 7SJ62
Category	Relays
Language	English