Voltage Protection (27 And 59) - Siemens SIPROTEC 7SJ62 Instruction Manual

10.12 Voltage Protection (27 and 59)

Setting Ranges /
Resolution
Inherent Operating
Times
Dropout Ratios
Tolerances
Influencing Vari-
ables
7SJ62 Manual
C53000-G1140-C121-1
Undervoltage
- Pickup Voltage,
phase-ground voltages
- Pickup Voltage
phase-phase voltages
Dropout Ratio for 27-1
Dropout Ratio for 27-1
Time Delay
Current Supervision
by 50 Element "BkrClosed I MIN"
Overvoltage
- Pickup Voltage,
phase-ground voltages
- Pickup Voltage,
phase-phase voltages
Time Delay
The set time are pure delay times.
Pickup Times
– Undervoltage
– Overvoltage
Dropout Times
– Undervoltage
– Overvoltage
– Dropout / Pickup (Voltage ratio) 27-2
– Dropout / Pickup (Voltage ratio) 59-1
– Pickup Voltages
– Time Delays
Power supply DC voltage (V
0.8 ≤ V ≤ 1.15
/ V
PS PS nominal
Temperature in range
23º F ≤ ϑ ≤ 131º F
amb
Frequency in range
0.95 ≤ f/f ≤ 1.05
N
Harmonics
rd
- Up to 10% 3 harmonic
th
- Up to 10% 5 harmonic
1
) For I = 1A, divide the limits by 5.
N
27-1, 27-2 Measurement Quantities:
PositiveSequence Voltages
30 V to 210 V
30 V to 120 V
r = 1.05 to 3.00
r · pickup max. 130 V for phase-phase voltages
max. 225 V for phase-ground voltage
27-Delay 0.00 s to 60.00 s
or ∞ (does not expire)
ON/OFF
0.20 A to 5.00 A
59-1
40 V to 225 V
40 V to 130 V
59-1 Delay 0.00 s to 60.00 s
or ∞ (does not expire)
27-1, 27-2 approx. 50 ms
59-1 approx. 50 ms
27-1, 27-2 approx. 50 ms
59-1 approx. 50 ms
1.05
0.95
3% of set value, or 1V
T 1% of set value, or 10 ms
) in range
DC
1%
0.3 % /10º F
1%
1%
1%
Technical Data
(Increments 1 V)
(Increments 1 V)
(Increments 0.01)
(Increments 0.01 s)
1 1
) (Increments 0.05 A) )
(Increments 1 V)
(Increments 1 V)
(Increments 0.01 s)
10-31