Description
30/293
Revision 11 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C • 802-9081.9
Electrical data
Conformity of voltage
transformers
The voltage transformer can be used as measuring transformer.
The approval symbol for the voltage transformer is located on the type plate. The approval
symbol is valid throughout the entire service life of the voltage transformer.
Observe deviating country-specific statutory regulations, if applicable.
For an inspection by a calibration office or an officially recognized inspecting authority, the
test adapter (802-8061.3) shown below can be mounted on the voltage transformer 4MT3.
Primary data for types 4MT3 and 4MT2
For operating voltages from 3.3 to 23 kV, rated voltage factor U
n
/8h = 1.9; U
n
/continuous = 1.2
Rated voltage [kV]
Rated short-duration power-
frequency withstand voltage
[kV]
Rated lightning impulse
withstand voltage [kV]
Standar
d
Operating voltage [kV]
3.6
10
20
IEC
3.3/ √ 3
7.2
20
60
IEC
3.6/ √ 3; 4.0/ √ 3; 4.16/ √ 3; 4.2 √ 3; 4.8/ √ 3;
5.0 √ 3; 5.5/ √ 3; 6.0/ √ 3; 6.24/ √ 3; 6.3/ √ 3;
6.6/ √ 3; 6.9/ √ 3
32
60
GOST
6.0/ √ 3; 6.3/ √ 3; 6.6/ √ 3
12
28
75
IEC
7.2/ √ 3; 7.6/ √ 3; 8.0/ √ 3; 8.3/ √ 3; 8.4/ √
3;8.9/ √ 3; 10/ √ 3; 10.5/ √ 3; 11/ √ 3; 11.4/ √
3; 11.5/ √ 3; 11.6/ √ 3
38
75
GOST
10/ √ 3; 10.5/ √ 3; 11/ √ 3
42
75
GB
10/ √ 3; 10.5/ √ 3; 11/ √ 3
17.5
38
95
IEC
12/ √ 3; 12.4/ √ 3; 12.47/ √ 3; 12.5/ √ 3; 12.8/
√ 3; 13.2/ √ 3; 13.4/ √ 3; 13.8/ √ 3; 14.4/ √ 3;
15/ √ 3; 15.8/ √ 3; 16/ √ 3; 17/ √ 3
24
50
125
IEC
17.5/ √ 3; 18/ √ 3; 19/ √ 3;20/ √ 3; 22/ √ 3; 23/
√ 3
GOST: Russian standard, GB: Chinese standard
Secondary data
For type Operating voltage
[V]
Auxiliary
winding
Thermal limit
current
(measuring
winding)
Rated long-
time current
8 h
Rating at accuracy class [VA]
0.2
0.5
1
3
4MT3
100/ √ 3;
110/ √ 3;
120/ √ 3
100/ √ 3;
110/ √ 3
120/ √ 3
6
4
IEC
10, 15, 20, 25, 30 10, 15, 20, 25,
30, 45, 50, 60,
75, 90
10, 15, 20, 25,
30, 45, 50, 60,
75, 90, 100,
120, 150, 180
10, 15, 20, 25,
30, 45, 50, 60,
75, 90, 100,
120, 150, 180
GOST 32/60 kV
10, 15, 20, 25, 30 10, 15, 20, 25,
30, 45, 50, 60,
75, 90
10, 15, 20, 25,
30, 45, 50, 60,
75, 90, 100,
120, 150, 180
10, 15, 20, 25,
30, 45, 50, 60,
75, 90, 100,
120, 150, 180
GOST 42/75 kV, GB 42/75 kV
10, 15, 20, 25
10, 15, 20, 25,
30, 45, 50, 60,
75
10, 15, 20, 25,
30, 45, 50, 60,
75, 90, 100,
120, 150
10, 15, 20, 25,
30, 45, 50, 60,
75, 90, 100,
120, 150
4MT2
100/ √ 3;
110/ √ 3;
120/ √ 3
100/ √ 3;
110/ √ 3;
120/ √ 3
8
6
IEC
5, 10, 15, 20, 25
10, 15, 20, 25,
30, 45
10, 15, 20, 25,
30, 45, 50, 60,
75
10, 15, 20, 25,
30, 45, 50, 60,
75
GOST 32/60 kV
5
10, 15
10, 15, 20, 25,
30
10, 15, 20, 25,
30
GOST 42/75 kV, GB 42/75 kV
5, 10
10, 15, 20, 25,
30
10, 15, 20, 25,
30, 45, 50, 60
10, 15, 20, 25,
30, 45, 50, 60
GOST: Russian standard, GB: Chinese standard
