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LZW-66(69) 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
Double ratios
Remarks: Upon request we are glad to offer transformers according to other standards or with non-standard technical specs.
Outline drawing
Main technical parameter
- Rated voltage : 66kV or 69kV
- Highest voltage for equipment : 72.5 kV
- Rated insulation level : 72.5/140/325kV
- Rated secondary current : 5A or 1A
- Standards: IEC60044-1.2003 Part 1: Instrument transformers-Part1: Current transformers or ANSI IEEE STD C57.13-2008
- Other technical parameter pls see as follow:
Specification
Single Ratio
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 | ||||
600/5 | 0.2/5P20 | 60/60 | 80 | 125 |
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 |
Outline drawing