1) Up to 33kV range
2) Secondary Current Rating- 1A or 5A
3) Secondary Voltage Rating- 110V
4) Primary Current Rating – upto 1600A
5) Accuracy Class – upto 0.2S Class
6) STC – upto25 kA/ 3sec.
|
Test |
Test Method |
Year |
LL |
Unit |
UL |
Unit |
|
Power frequency dry withstand test on primary terminals (with unearth VT) |
IS 2705 (Part 1) |
2017 |
10 |
kV |
95 |
kV |
|
IS 3156 (Part 1) |
1992 |
10 |
kV |
95 |
kV |
|
|
IS 16227 (Part 1) |
2015 |
10 |
kV |
95 |
kV |
|
|
IEC 61869-4 |
2013 |
10 |
kV |
95 |
kV |
|
|
Power frequency dry withstand test on primary terminals (with earthed VT) |
IS 2705 (Part 1) |
2017 |
1 |
kV |
5 |
kV |
|
IS 3156 (Part 1) |
1992 |
1 |
kV |
5 |
kV |
|
|
IS 16227 (Part 1) |
2015 |
1 |
kV |
5 |
kV |
|
|
IEC 61869-4 |
2013 |
1 |
kV |
5 |
kV |
|
|
|
|
|
|
|
|
|
|
Power frequency dry withstand test on secondary terminals |
IS 2705 (Part 1) |
2017 |
1 |
kV |
5 |
kV |
|
IS 3156 (Part 1) |
1992 |
1 |
kV |
5 |
kV |
|
|
IS 16227 (Part 1) |
2015 |
1 |
kV |
5 |
kV |
|
|
IEC 61869-4 |
2013 |
1 |
kV |
5 |
kV |
|
|
Differential mode (Induced) AC Voltage test on primary terminals (Unearth/Earthed VT) |
IS 3156 (Part 1) |
1992 |
1.81 |
kV |
95 |
kV |
|
IS 16227 (Part 4) |
2015 |
1.81 |
kV |
95 |
kV |
|
|
IEC 61869-4 |
2013 |
1.81 |
kV |
95 |
kV |
|
|
CT secondary winding resistance |
IS 2705 (Part 2) |
2017 |
50 |
m ohm |
20 |
ohm |
|
IS 16227 (Part 2) |
2016 |
50 |
m ohm |
20 |
ohm |
|
|
IEC 61869-2 |
2012 |
50 |
m ohm |
20 |
ohm |
|
|
Over Voltage interturn test on CT Circuit |
IS 2705 (Part 2) |
2017 |
1.8 |
mA |
10 |
A |
|
IS 16227 (Part 4) |
2015 |
1.8 |
mA |
10 |
A |
|
|
IEC 61869-4 |
2013 |
1.8 |
mA |
10 |
A |
|
|
Instrument Security Current test |
IS 2705 (Part 2) |
2017 |
1 |
V |
750 |
V |
|
IS 16227 (Part 2) |
2016 |
1 |
V |
750 |
V |
|
|
IS 16227 (Part 4) |
2015 |
1 |
V |
750 |
V |
|
|
IEC 61869-2 |
2012 |
1 |
V |
750 |
V |
|
|
IEC 61869-4 |
2013 |
1 |
V |
750 |
V |
|
|
IS 2705 (Part 2) |
2017 |
1.8 |
mA |
10 |
A |
|
|
IS 16227 (Part 2) |
2016 |
1.8 |
mA |
10 |
A |
|
|
IS 16227 (Part 4) |
2015 |
1.8 |
mA |
10 |
A |
|
|
IEC 61869-2 |
2012 |
1.8 |
mA |
10 |
A |
|
|
IEC 61869-4 |
2013 |
1.8 |
mA |
10 |
A |
|
|
Verification of terminal marking and polarity (Qualitative Test) |
IS 2705 (Part 1) |
2017 |
-- |
-- |
-- |
-- |
|
IS 3156 (Part 1) |
1992 |
-- |
-- |
-- |
-- |
|
|
IS 3156 (Part 2) |
1992 |
-- |
-- |
-- |
-- |
|
|
IS 3156 (Part 3) |
1992 |
-- |
-- |
-- |
-- |
|
|
IS 16227 (Part 4) |
2016 |
-- |
-- |
-- |
-- |
|
|
IEC 61869-4 |
2013 |
-- |
-- |
-- |
-- |
|
|
Test for Accuracy (Ratio Error) for CT
|
IS 2705 (Part 2) |
2017 |
0 |
% |
5 |
% |
|
IS 16227 (Part 2) |
2016 |
0 |
% |
5 |
% |
|
|
IS 16227 (Part 4) |
2015 |
0 |
% |
5 |
% |
|
|
IEC 61869-2 |
2012 |
0 |
% |
5 |
% |
|
|
IEC 61869-4 |
2013 |
0 |
% |
5 |
% |
|
|
Test for Accuracy (Phase Displacement) for CT |
IS 2705 (Part 2) |
2017 |
0 |
min |
120 |
min |
|
IS 16227 (Part 2) |
2016 |
0 |
min |
120 |
min |
|
|
IS 16227 (Part 4) |
2015 |
0 |
min |
120 |
min |
|
|
IEC 61869-2 |
2012 |
0 |
min |
120 |
min |
|
|
IEC 61869-4 |
2013 |
0 |
min |
120 |
Min
|
|
|
Test |
Test Method |
Year |
LL |
Unit |
UL |
Unit |
|
Test for Accuracy (Ratio Error) for VT |
IS 3156 (Part 1) |
1992 |
0 |
% |
5 |
% |
|
IS 3156 (Part 2) |
1992 |
0 |
% |
5 |
% |
|
|
IS 3156 (Part 3) |
1992 |
0 |
% |
5 |
% |
|
|
IS 16227 (Part 3) |
2015 |
0 |
% |
5 |
% |
|
|
IS 16227 (Part 4) |
2015 |
0 |
% |
5 |
% |
|
|
IEC 61869-3 |
2011 |
0 |
% |
5 |
% |
|
|
IEC 61869-4 |
2013 |
0 |
% |
5 |
% |
|
|
Test for Accuracy (Phase Displacement) for VT |
IS 3156 (Part 1) |
1992 |
0 |
min |
120 |
min |
|
IS 3156 (Part 2) |
1992 |
0 |
min |
120 |
min |
|
|
IS 3156 (Part 3) |
1992 |
0 |
min |
120 |
min |
|
|
IS 16227 (Part 3) |
2015 |
0 |
min |
120 |
min |
|
|
IS 16227 (Part 4) |
2015 |
0 |
min |
120 |
min |
|
|
IEC 61869-3 |
2011 |
0 |
min |
120 |
min |
|
|
IEC 61869-4 |
2013 |
0 |
min |
120 |
min |
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