Chapter 3) 7SR242 Duobias Performance Specification
©2015 Siemens Protection Devices Limited
Chapter 3 Page 46 of 50
2.17 87HS High-Set Differential
2.17.1 Reference
Parameter
Value
ICT
Multiplier
1.00x
Is
Setting
1, 2 … 30 xIn
ts
Delay setting
0, 0.005… 1s
2.17.2 Operate and Reset Level
Attribute
Value
I
op
Operate level
5% of setting or 0.01In
Reset level
95% of I
OP
Repeatability
2%
Transient overreach
5%
Variation
-10 °C to +55 °C
f
nom
- 3 Hz to
f
nom
+ 2 Hz
2.17.3 Operate and Reset Time
Attribute
Value
t
basic
Element basic operate time
Switched from 0 to x I
OP
3 x I
OP
, 30 ms, 10ms
5 x
I
OP
, 25 ms, 10ms
t
op
Operate time following delay
t
basic
+
t
d
, 1% or 10ms
Summary of Contents for 7SR242 Duobias
Page 1: ...Answers for energy 7SR242 Duobias Transformer Protection Relay Reyrolle Protection Devices ...
Page 2: ...2 ...
Page 4: ...4 ...
Page 6: ...6 www siemens com energy ...
Page 318: ... 2015 Siemens Protection Devices Limited Chapter 7 Page 2 of 64 ...
Page 324: ... 2015 Siemens Protection Devices Limited Chapter 7 Page 8 of 64 ...
Page 358: ... 2015 Siemens Protection Devices Limited Chapter 7 Page 42 of 64 ...
Page 366: ... 2015 Siemens Protection Devices Limited Chapter 7 Page 50 of 64 ...
Page 380: ... 2015 Siemens Protection Devices Limited Chapter 7 Page 64 of 64 ...
Page 381: ......