Technical Guide
P92x/EN TD/E11
Technical Data
MiCOM P921-P922-P923
Page 11/30
3.1.4
Definite time delay characteristics
Setting
Range
Step Size
tV<
0 – 599s
0.01s
tV<<
0 – 599s
0.01s
tV<<<
0 – 599s
0.01s
3.1.5
Hysteresis
Setting
Range
Step Size
Hysteresis
1.02 – 1.05
0.01s
NOTE :
this range is a percentage value of the pickup value of the
undervoltage elements (see paragraph 9.3 Protection accuracy)
3.2
Overvoltage (ANSI code 59)
3.2.1
Threshold settings (secondary values)
-
Nominal voltage range : 57 – 130V
Setting
Range
Step Size
V>= Voltage Set
5 – 200V
0.1V
V>>= Voltage Set
5 – 260V
0.1V
V>>>= Voltage Set
5 – 260V
0.1V
-
Nominal voltage range : 220 – 480V
Setting
Range
Step Size
V>= Voltage Set
20 – 720V
0.5V
V>>= Voltage Set
20 – 960V
0.5V
V>>>= Voltage Set
20 – 960V
0.5V
3.2.2
Time delay settings
Each voltage element is associated to an independent time delay.
Each measuring element time delay can be blocked by the operation of a user
defined logic (optical isolated) input (see “Blocking logic1” or “Blocking logic2”
functions).
Element
Time delay type
1
st
stage
Definite Time (DT) or IDMT
2
nd
stage
DT
3
rd
stage
DT
Summary of Contents for MiCOM P921
Page 1: ...MiCOM P921 P922 P923 Voltage and Frequency Relays Technical guide P92x EN T E11...
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Page 5: ...Technical Guide Px2xx EN SS A11 SAFETY SECTION SAFETY SECTION...
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Page 13: ...Technical Guide P92x EN GS E11 MiCOM P921 P922 P923 aBCD Getting Started...
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Page 33: ...Technical Guide P92x EN CO E11 MiCOM P921 P922 P923 aBCD Connection Diagrams...
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Page 45: ...Technical Guide P92x EN TD E11 MiCOM P921 P922 P923 Technical Data...
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Page 77: ...Technical Guide P92x EN FT E11 MiCOM P921 P922 P923 User Guide...
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Page 298: ...P92x EN CT E11 Technical Guide IEC 60870 5 103 Page 108 118 MiCOM P921 P922 P923 BLANK PAGE...
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Page 309: ...Technical Guide P92x EN IN E11 MiCOM P921 P922 P923 abcd Installation...
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Page 320: ...Technical Guide P92x EN CM E11 MiCOM P921 P922 P923 abcd Commissioning Guide...
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Page 351: ...Technical Guide P92x EN RS E11 MiCOM P921 P922 P923 Test Report...
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