P92x/EN GS/E11
Technical Guide
Getting Started
Page 12/18
MiCOM P921-P922-P923
aB
C
D
11.3
VT Ratios
The default ratios are equal to 1. If other ratios are required, please follow the
instructions below. From the default display, press
2
once,
6
once,
2
once and
press
6
once to access the « VT RATIO » menu.
Then, press
2
once and the following prompt will appear :
Main VT Primary
110.0 V
Change the setting by pressing either the
2
key or the
8
key. To validate the new
value, press the enter key
5
.
Press
2
once and the following prompt will appear (if the voltage input range is
"57-130V") :
Main VT Sec’y
110.0 V
If the voltage input range is 220-480V, there is no need to specify the VT secondary
level.
Change the setting by pressing either the
2
key or the
8
key. To validate the new
value, press the enter key
5
.
If the connection scheme includes a residual VT, the ratio of this VT must be set in this
menu. The prompts will be :
E/Gnd VT Primary
110.0 V
and
E/Gnd VT Sec'y
110.0 V
11.4
Connection mode
From the heading of the menu, press
8
once to go back to the default display.
From the default display, press
2
once,
6
once and
2
once to access to the menu
« CONFIGURATION », sub-menu « GENERAL ». Press
2
once.
The following connection schemes are supported :
3V
PN
= 3 phase-neutral VTs
3V
PN
+ V
R
= 3 phase-neutral VTs + residual VT
3V
PP
+ V
R
= 3 phase-phase VTs + residual VT
2V
PP
+ V
R
= 2 phase-phase VTs + residual VT
The default configuration is :
Connection
3V
PN
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 4: ...P92x EN T00 E11 Technical Guide Content Page 2 2 MiCOM P921 P922 P923 BLANK PAGE...
Page 5: ...Technical Guide Px2xx EN SS A11 SAFETY SECTION SAFETY SECTION...
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Page 8: ...Px2xx EN SS A11 Technical Guide SAFETY SECTION Page 2 6 BLANK PAGE...
Page 12: ...Px2xx EN SS A11 Technical Guide SAFETY SECTION Page 6 6 BLANK PAGE...
Page 13: ...Technical Guide P92x EN GS E11 MiCOM P921 P922 P923 aBCD Getting Started...
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Page 16: ...P92x EN GS E11 Technical Guide Getting Started Page 2 18 MiCOM P921 P922 P923 aBCD BLANK PAGE...
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 50: ...P92x EN TD E11 Technical Guide Technical Data Page 4 30 MiCOM P921 P922 P923 BLANK PAGE...
Page 76: ...P92x EN TD E11 Technical Guide Technical Data Page 30 30 MiCOM P921 P922 P923 BLANK PAGE...
Page 77: ...Technical Guide P92x EN FT E11 MiCOM P921 P922 P923 User Guide...
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Page 258: ...P92x EN CT E11 Technical Guide Courier Database Page 68 118 MiCOM P921 P922 P923 BLANK PAGE...
Page 296: ...P92x EN CT E11 Technical Guide Courier Database Page 106 118 MiCOM P921 P922 P923 BLANK PAGE...
Page 298: ...P92x EN CT E11 Technical Guide IEC 60870 5 103 Page 108 118 MiCOM P921 P922 P923 BLANK PAGE...
Page 308: ...P92x EN CT E11 Technical Guide IEC 60870 5 103 Page 118 118 MiCOM P921 P922 P923 BLANK PAGE...
Page 309: ...Technical Guide P92x EN IN E11 MiCOM P921 P922 P923 abcd Installation...
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Page 312: ...P92x EN IN E11 Technical Guide Installation Page 2 10 MiCOM P921 P922 P923 abcd BLANK PAGE...
Page 319: ...P92x EN IN E11 Technical Guide Installation Page 10 10 MiCOM P921 P922 P923 abcd BLANK PAGE...
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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Page 354: ...P92x EN RS E11 Technical Guide Test Report Page 2 22 MiCOM P921 P922 P923 BLANK PAGE...
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