UNIT – 1
LAVT
CT – 2
Name Plate Details:
Core 1: 2500/5 A Burden: - CL: PS ISF / ALF : -
Core 2: 2500/5 A Burden: - CL: PS ISF / ALF : -
For Core 1: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2
For Core 2: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2
Freq:50Hz; Ins.Level :12/36/95 kV; STC: 40 kA for1 sec.; Ins.Cl: B
ConfirmedTo:IS2705/1992
Knee Point Voltage Test:
R – PH:
CT SL. NO.: CT12109179
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 9.0 9.0
40 12.9 12.8
60 15.6 15.5
80 18.3 17.6
100 20.8 20.7
120
140
160
180
200
220
Y – PH:
CT SL. NO.: CT12109176
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 8.9 7.8
40 13.0 11.2
60 15.3 13.5
80 18.2 16.1
100 20.1 18.0
120
140
160
180
200
220
B – PH:
CT SL. NO.: CT12109175
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 8.5 8.9
40 11.8 12.7
60 14.3 15.1
80 19.0 18.2
100 20.0 20.4
120
140
160
180
200
220
CT – 3
Name Plate Details:
Core 1: 2500/5 A Burden: - CL: PS ISF / ALF : -
Core 2: 2500/5 A Burden: - CL: PS ISF / ALF : -
For Core 1: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2
For Core 2: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2
Freq:50Hz; Ins.Level :12/36/95 kV; STC: 40 kA for1 sec.; Ins.Cl: B
ConfirmedTo:IS2705/1992
Knee Point Voltage Test:
R – PH:
CT SL. NO.: CT12109169
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 6.5 8.5
40 10.6 13.0
60 13.5 16.4
80 15.7 19.7
100 17.7 23.1
120
140
160
180
200
220
Y – PH:
CT SL. NO.: CT12109171
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 10.1 8.2
40 13.6 12.9
60 16.7 15.2
80 20.0 18.2
100 22.6 22.9
120
140
160
180
200
220
B – PH:
CT SL. NO.: CT12109174
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 9.6 10.9
40 13.5 15.3
60 17.1 18.5
80 21.0 22.1
100 24.9 24.2
120
140
160
180
200
220
UNIT – 1 NGT
CT – 1
Name Plate Details:
Core 1: 2500/5 A Burden: - CL: PS ISF / ALF : -
Core 2: 2500/5 A Burden: - CL: PS ISF / ALF : -
For Core 1: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2
For Core 2: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2
Freq:50Hz; Ins.Level :12/36/95 kV; STC: 40 kA for1 sec.; Ins.Cl: B
ConfirmedTo:IS2705/1992
Knee Point Voltage Test:
R – PH:
CT SL. NO.: CT12109185
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 6.2 10.2
40 9.8 14.5
60 12.9 17.4
80 15.5 20.4
100 18.2 23.6
120
140
160
180
200
220
Y – PH:
CT SL. NO.: CT12109186
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 6.7 11.4
40 10.5 15.1
60 14.2 17.1
80 17.6 18.5
100 21.2 20.7
120
140
160
180
200
220
B – PH:
CT SL. NO.: CT12109184
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 8.5 9.5
40 11.6 13.2
60 13.3 15.1
80 15.0 17.0
100 16.6 18.3
120
140
160
180
200
220
CT – 2
Name Plate Details:
Core 1: 2500/5 A Burden: - CL: PS ISF / ALF : -
Core 2: 2500/5 A Burden: - CL: PS ISF / ALF : -
For Core 1: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2
For Core 2: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2
Freq:50Hz; Ins.Level :12/36/95 kV; STC: 40 kA for 1 sec.; Ins.Cl: B
ConfirmedTo:IS2705/1992
Knee Point Voltage Test:
R – PH:
CT SL. NO.: CT12109180
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 9.7 9.3
40 14.0 13.6
60 16.9 15.1
80 19.9 17.7
100 23.7 20.2
120
140
160
180
200
220
Y – PH:
CT SL. NO.: CT12109188
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 12.5 9.2
40 16.6 12.9
60 19.1 15.6
80 22.0 18.7
100 24.1 21.5
120
140
160
180
200
220
B – PH:
CT SL. NO.: CT12109190
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 9.3 9.7
40 13.8 12.9
60 15.9 15.3
80 18.2 17.4
100 20.4 18.4
120
140
160
180
200
220
UNIT – 2
LAVT
CT – 2
Name Plate Details:
Core 1: 2500/5 A Burden: - CL: PS ISF / ALF : -
Core 2: 2500/5 A Burden: - CL: PS ISF / ALF : -
For Core 1: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2
For Core 2: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2
Freq:50Hz; Ins.Level :12/36/95 kV; STC: 40 kA for1 sec.; Ins.Cl: B
ConfirmedTo:IS2705/1992
Knee Point Voltage Test:
R – PH:
CT SL. NO.: CT12109170
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 9.7 9.5
40 14.0 13.5
60 17.4 16.8
80 21.4 19.5
100 25.2 21.8
120 23.1
140 26.1
160
180
200
220
Y – PH:
CT SL. NO.: CT12109178
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 10.1 10.0
40 14.2 14.5
60 17.1 17.9
80 19.5 20.9
100 21.6 24.4
120 23.8 28.2
140 26.4
160
180
200
220
B – PH:
CT SL. NO.: CT12109172
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 9.7 10.4
40 13.8 14.6
60 17.7 18.3
80 21.2 21.3
100 25.0 23.2
120 25.7
140 27.9
160
180
200
220
CT – 3
Name Plate Details:
Core 1: 2500/5 A Burden: - CL: PS ISF / ALF : -
Core 2: 2500/5 A Burden: - CL: PS ISF / ALF : -
For Core 1: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2
For Core 2: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2
Freq:50Hz; Ins.Level :12/36/95 kV; STC: 40 kA for1 sec.; Ins.Cl: B
ConfirmedTo:IS2705/1992
Knee Point Voltage Test:
R – PH:
CT SL. NO.: CT12109173
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 11.8 10.6
40 17.2 14.8
60 21.9 18.1
80 26.4 21.2
100 24.7
120 28.0
140
160
180
200
220
Y – PH:
CT SL. NO.: CT12109177
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 10.4 9.1
40 14.7 13.1
60 17.8 16.1
80 20.8 17.7
100 23.2 18.4
120 26.6 21.4
140 23.3
160 25.8
180
200
220
B – PH:
CT SL. NO.: CT12109168
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 10.6 10.1
40 14.6 13.9
60 17.1 16.1
80 19.6 18.5
100 22.2 20.6
120 25.3 23.1
140 25.8
160
180
200
220
UNIT – 2 NGT
CT – 1
Name Plate Details:
Core 1: 2500/5 A Burden: - CL: PS ISF / ALF : -
Core 2: 2500/5 A Burden: - CL: PS ISF / ALF : -
For Core 1: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2
For Core 2: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2
Freq:50Hz; Ins.Level :12/36/95 kV; STC: 40 kA for1 sec.; Ins.Cl: B
ConfirmedTo:IS2705/1992
Knee Point Voltage Test:
R – PH:
CT SL. NO.: CT12109189
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 10.0 9.0
40 14.1 12.3
60 17.0 15.3
80 20.4 17.2
100 23.2 19.7
120 21.9
140 24.2
160 26.7
180
200
220
Y – PH:
CT SL. NO.: CT12109191
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 7.7 9.9
40 12.1 13.9
60 16.2 17.2
80 20.3 19.3
100 24.6 22.2
120 24.6
140
160
180
200
220
B – PH:
CT SL. NO.: CT12109183
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 9.9 9.6
40 13.9 13.9
60 17.2 17.2
80 19.3 20.6
100 22.2 24.1
120 24.6
140
160
180
200
220
CT – 2
Name Plate Details:
Core 1: 2500/5 A Burden: - CL: PS ISF / ALF : -
Core 2: 2500/5 A Burden: - CL: PS ISF / ALF : -
For Core 1: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2
For Core 2: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2
Freq:50Hz; Ins.Level :12/36/95 kV; STC: 40 kA for1 sec.; Ins.Cl: B
ConfirmedTo:IS2705/1992
Knee Point Voltage Test:
R – PH:
CT SL. NO.: CT12109182
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 6.8 11.3
40 10.4 15.2
60 13.7 18.1
80 16.7 21.0
100 19.9 23.0
120 23.4 25.2
140 27.6 27.7
160
180
200
220
Y – PH:
CT SL. NO.: CT12109181
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 9.7 9.3
40 13.7 13.0
60 17.1 16.2
80 20.8 18.4
100 24.2 20.7
120 27.1 22.7
140 26.0
160 27.2
180
200
220
B – PH:
CT SL. NO.: CT12109187
Applied Voltage to secondary in Volts Measured Current in mA
Core 1 Core 2
20 10.3 10.3
40 14.5 14.4
60 17.8 17.2
80 20.6 20.0
100 24.3 22.2
120 28.4 25.4
140 28.5
160
180
200
220

Ct test report

  • 1.
    UNIT – 1 LAVT CT– 2 Name Plate Details: Core 1: 2500/5 A Burden: - CL: PS ISF / ALF : - Core 2: 2500/5 A Burden: - CL: PS ISF / ALF : - For Core 1: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2 For Core 2: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2 Freq:50Hz; Ins.Level :12/36/95 kV; STC: 40 kA for1 sec.; Ins.Cl: B ConfirmedTo:IS2705/1992 Knee Point Voltage Test: R – PH: CT SL. NO.: CT12109179 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 9.0 9.0 40 12.9 12.8 60 15.6 15.5 80 18.3 17.6 100 20.8 20.7 120 140 160 180 200 220
  • 2.
    Y – PH: CTSL. NO.: CT12109176 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 8.9 7.8 40 13.0 11.2 60 15.3 13.5 80 18.2 16.1 100 20.1 18.0 120 140 160 180 200 220 B – PH: CT SL. NO.: CT12109175 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 8.5 8.9 40 11.8 12.7 60 14.3 15.1 80 19.0 18.2 100 20.0 20.4 120 140 160 180 200 220
  • 3.
    CT – 3 NamePlate Details: Core 1: 2500/5 A Burden: - CL: PS ISF / ALF : - Core 2: 2500/5 A Burden: - CL: PS ISF / ALF : - For Core 1: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2 For Core 2: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2 Freq:50Hz; Ins.Level :12/36/95 kV; STC: 40 kA for1 sec.; Ins.Cl: B ConfirmedTo:IS2705/1992 Knee Point Voltage Test: R – PH: CT SL. NO.: CT12109169 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 6.5 8.5 40 10.6 13.0 60 13.5 16.4 80 15.7 19.7 100 17.7 23.1 120 140 160 180 200 220
  • 4.
    Y – PH: CTSL. NO.: CT12109171 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 10.1 8.2 40 13.6 12.9 60 16.7 15.2 80 20.0 18.2 100 22.6 22.9 120 140 160 180 200 220 B – PH: CT SL. NO.: CT12109174 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 9.6 10.9 40 13.5 15.3 60 17.1 18.5 80 21.0 22.1 100 24.9 24.2 120 140 160 180 200 220
  • 5.
    UNIT – 1NGT CT – 1 Name Plate Details: Core 1: 2500/5 A Burden: - CL: PS ISF / ALF : - Core 2: 2500/5 A Burden: - CL: PS ISF / ALF : - For Core 1: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2 For Core 2: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2 Freq:50Hz; Ins.Level :12/36/95 kV; STC: 40 kA for1 sec.; Ins.Cl: B ConfirmedTo:IS2705/1992 Knee Point Voltage Test: R – PH: CT SL. NO.: CT12109185 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 6.2 10.2 40 9.8 14.5 60 12.9 17.4 80 15.5 20.4 100 18.2 23.6 120 140 160 180 200 220
  • 6.
    Y – PH: CTSL. NO.: CT12109186 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 6.7 11.4 40 10.5 15.1 60 14.2 17.1 80 17.6 18.5 100 21.2 20.7 120 140 160 180 200 220 B – PH: CT SL. NO.: CT12109184 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 8.5 9.5 40 11.6 13.2 60 13.3 15.1 80 15.0 17.0 100 16.6 18.3 120 140 160 180 200 220
  • 7.
    CT – 2 NamePlate Details: Core 1: 2500/5 A Burden: - CL: PS ISF / ALF : - Core 2: 2500/5 A Burden: - CL: PS ISF / ALF : - For Core 1: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2 For Core 2: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2 Freq:50Hz; Ins.Level :12/36/95 kV; STC: 40 kA for 1 sec.; Ins.Cl: B ConfirmedTo:IS2705/1992 Knee Point Voltage Test: R – PH: CT SL. NO.: CT12109180 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 9.7 9.3 40 14.0 13.6 60 16.9 15.1 80 19.9 17.7 100 23.7 20.2 120 140 160 180 200 220
  • 8.
    Y – PH: CTSL. NO.: CT12109188 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 12.5 9.2 40 16.6 12.9 60 19.1 15.6 80 22.0 18.7 100 24.1 21.5 120 140 160 180 200 220 B – PH: CT SL. NO.: CT12109190 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 9.3 9.7 40 13.8 12.9 60 15.9 15.3 80 18.2 17.4 100 20.4 18.4 120 140 160 180 200 220
  • 9.
    UNIT – 2 LAVT CT– 2 Name Plate Details: Core 1: 2500/5 A Burden: - CL: PS ISF / ALF : - Core 2: 2500/5 A Burden: - CL: PS ISF / ALF : - For Core 1: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2 For Core 2: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2 Freq:50Hz; Ins.Level :12/36/95 kV; STC: 40 kA for1 sec.; Ins.Cl: B ConfirmedTo:IS2705/1992 Knee Point Voltage Test: R – PH: CT SL. NO.: CT12109170 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 9.7 9.5 40 14.0 13.5 60 17.4 16.8 80 21.4 19.5 100 25.2 21.8 120 23.1 140 26.1 160 180 200 220
  • 10.
    Y – PH: CTSL. NO.: CT12109178 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 10.1 10.0 40 14.2 14.5 60 17.1 17.9 80 19.5 20.9 100 21.6 24.4 120 23.8 28.2 140 26.4 160 180 200 220 B – PH: CT SL. NO.: CT12109172 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 9.7 10.4 40 13.8 14.6 60 17.7 18.3 80 21.2 21.3 100 25.0 23.2 120 25.7 140 27.9 160 180 200 220
  • 11.
    CT – 3 NamePlate Details: Core 1: 2500/5 A Burden: - CL: PS ISF / ALF : - Core 2: 2500/5 A Burden: - CL: PS ISF / ALF : - For Core 1: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2 For Core 2: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2 Freq:50Hz; Ins.Level :12/36/95 kV; STC: 40 kA for1 sec.; Ins.Cl: B ConfirmedTo:IS2705/1992 Knee Point Voltage Test: R – PH: CT SL. NO.: CT12109173 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 11.8 10.6 40 17.2 14.8 60 21.9 18.1 80 26.4 21.2 100 24.7 120 28.0 140 160 180 200 220
  • 12.
    Y – PH: CTSL. NO.: CT12109177 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 10.4 9.1 40 14.7 13.1 60 17.8 16.1 80 20.8 17.7 100 23.2 18.4 120 26.6 21.4 140 23.3 160 25.8 180 200 220 B – PH: CT SL. NO.: CT12109168 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 10.6 10.1 40 14.6 13.9 60 17.1 16.1 80 19.6 18.5 100 22.2 20.6 120 25.3 23.1 140 25.8 160 180 200 220
  • 13.
    UNIT – 2NGT CT – 1 Name Plate Details: Core 1: 2500/5 A Burden: - CL: PS ISF / ALF : - Core 2: 2500/5 A Burden: - CL: PS ISF / ALF : - For Core 1: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2 For Core 2: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2 Freq:50Hz; Ins.Level :12/36/95 kV; STC: 40 kA for1 sec.; Ins.Cl: B ConfirmedTo:IS2705/1992 Knee Point Voltage Test: R – PH: CT SL. NO.: CT12109189 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 10.0 9.0 40 14.1 12.3 60 17.0 15.3 80 20.4 17.2 100 23.2 19.7 120 21.9 140 24.2 160 26.7 180 200 220
  • 14.
    Y – PH: CTSL. NO.: CT12109191 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 7.7 9.9 40 12.1 13.9 60 16.2 17.2 80 20.3 19.3 100 24.6 22.2 120 24.6 140 160 180 200 220 B – PH: CT SL. NO.: CT12109183 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 9.9 9.6 40 13.9 13.9 60 17.2 17.2 80 19.3 20.6 100 22.2 24.1 120 24.6 140 160 180 200 220
  • 15.
    CT – 2 NamePlate Details: Core 1: 2500/5 A Burden: - CL: PS ISF / ALF : - Core 2: 2500/5 A Burden: - CL: PS ISF / ALF : - For Core 1: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2 For Core 2: Vk: 400V; Max. RS: 2.0Ω ; Iex<30 mA at Vk/2 Freq:50Hz; Ins.Level :12/36/95 kV; STC: 40 kA for1 sec.; Ins.Cl: B ConfirmedTo:IS2705/1992 Knee Point Voltage Test: R – PH: CT SL. NO.: CT12109182 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 6.8 11.3 40 10.4 15.2 60 13.7 18.1 80 16.7 21.0 100 19.9 23.0 120 23.4 25.2 140 27.6 27.7 160 180 200 220
  • 16.
    Y – PH: CTSL. NO.: CT12109181 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 9.7 9.3 40 13.7 13.0 60 17.1 16.2 80 20.8 18.4 100 24.2 20.7 120 27.1 22.7 140 26.0 160 27.2 180 200 220 B – PH: CT SL. NO.: CT12109187 Applied Voltage to secondary in Volts Measured Current in mA Core 1 Core 2 20 10.3 10.3 40 14.5 14.4 60 17.8 17.2 80 20.6 20.0 100 24.3 22.2 120 28.4 25.4 140 28.5 160 180 200 220