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LZW-72.5 current transformer, epoxy resin casting insulation and outdoor installation, is widely used for measuring current, electric energy and protective relaying in the power system with the rated frequency 50Hz or 60 Hz and rated voltage 66kV or 69kV
Main technical parameter
1. Rated voltage : 66kV or 69kV
2. Highest voltage for equipment : 72.5 kV
3. Rated insulation level : 72.5/140/325kV
4. Rated secondary current :5Aor1A
5. Standards: IEC60044-1.2003 Part 1: Instrument transformers-Part1: Current transformers or ANSI IEEE STD C57.13-2008
6. Other technical parameter pls see as follow:
|
Rated Transformation ratio(A) |
Secondary accuracy classes combination |
Rated output (VA) |
Rated short-time thermal current (kA/1s) |
Rated dynamic current ( kA)
|
||
|
Measuring |
Protective |
|||||
|
0.2S |
0.5 |
10P15 |
||||
|
25~200/5 |
0.2S/0.5/10P15 0.2/0.5/10P15
0.2S/10P15/10P15 0.2/10P15/10P15 |
50 30 |
50 30 |
50 30 |
150I1n |
375I1n |
|
300/5 |
42.5 |
100 |
||||
|
400/5 |
50 |
100 |
||||
|
500/5 |
63 |
125 |
||||
|
600/5 |
80 |
125 |
||||
|
750/5 |
80 |
125 |
||||
|
800/5 |
100 |
160 |
||||
|
1000~1500/5 |
100 |
160 |
||||
Double ratios
Rated Transformation ratio(A)
Secondary accuracy classes combination
Rated output
(VA)
Rated short-time
thermal current (kA/1s)
Rated dynamic
current Idyn( kA)
Measuring
Protective
0.2
Tap
0.2S
Full
0.5
10P15
2X25/5
0.2S/0.5/10P15
0.2/0.5/10P15
0.2S/10P15/10P15
0.2/10P15/10P15
30
50
30
50
30
50
30
2X3
2X8
2X50/5
2X6
2X15
2X75/5
2X 9
2X22.5
2X100/5
2X 12
2X30
2X150/5
2X15
2X37.5
2X200/5
2X 22.5
2X56
2X300/5
2X 31.5
2X80
2X400/5
2X 42.5
2X100
2X600/5
2X 55
2X137.5
2X750/5
2X 70
2X175
Remarks: Upon request we are
glad to offer transformers according to other standards or with non-standard
technical specs.
Outline drawing
1# International Business Department.
0086-755-8600 0713
Mobile :+86-138 2379 0397
1F and 4F block B,Jiada R&D Bldg, High-tech Park,Nanshan,Shenzhen,China
Post code：518057
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