3.3-13.8 kV
CT PT combined with VCB
Product parameters:
· Outdoor oil immersed type combined CT PT
· Three phase four wire or three phase three wire
· Rated voltage: 3.3kV, 6kV, 10kV, 11kV, 12.5kV, 13.8kV
· Metering class for CT: 0.2S, 0.2, 0.3, 0.5, 0.5S, 0.6
·Metering class for PT: 0.2, 0.3, 0.5, 0.6
· Rated current for relcoser: 630A, 400A, 200A
· Standard: IEC, ANSI, GB
General
This outdoor epoxy resin type combined current transformer/voltage transformer metering instrument transformer (metering units, MOF), used in current transformer used in 3.3kV, 6kV, 10kV, 11kV, 12.5kV and 13.8kV power system, for measuring energy, power line protection, and control.
It has been used in outdoor pole mounted and transmission line.
The voltage transformer is made from outdoor high quality ultraviolet-proof epoxy resin, high quality CRGO core for metering, primary and secondary use pure electrolytic copper, both winding and core have shielding processing.
This combined instrument transformer can combine from 2 Current transformer and 2 voltage transformers to be 3 phase 3 wire, also can combined from 3 current transformer and 3 voltage transformers to be 3 phase 4 wire.
2 voltage transformer structure use V/V connection, 3 voltage transformer structure use Y/Y connection.
Outdoor vacuum circuit breaker can work as recloser, automatic protection, metering with smart prepaid meter, if no money one prepaid meter, MV power line automatic cut down, if charge money on prepaid meter, power automatic power recovery.
It has default phase protection, overcurrent protection, overvoltage protection, and other relay protection functions.
Standard
All UNISUN Electric instrument transformers are in conformity with IEC standards, and recommendations IEC 61869. Transformers in conformity with specific country standards can also be supplied. (IEEE C57.13, NBR6855).
All vacuum circuit breakers conform to the IEC 62271-100, CEI – VDE – BS Standards are equivalent to IE Standards due to harmonization with IEC
Specification data sheet
Current Transformer
Rated primary current(A) | Rated secondary current(A) | Accuracy class and output (VA) | Rated short-time thermal current(kA) | Rated dynamic stable current (kA) | ||
0.2S | 0.2 | 0.5S | ||||
5, 10, 15, 20, 25, 30, 40, 50, 75, 100, 150, 200, 300, 400, 600, 800,100 | 5 | 10 | 10 | 10 | 75Ⅰln | 187.5Ⅰln |
Voltage transformer
Rated primary voltage(kV) | Maximum system voltage(kV) | Rate secondary voltage(V) | Accuracy class and output (VA) | limit output (VA) | |
0.2 | 0.5 | ||||
3.3/6 | 7.2 | 100 | 20 | 30 | 320 |
10/11 | 12 | 100 | 20 | 30 | 640 |
Vacuum Circuit Breaker
Parameter name | Unit | Number of Values | ||
Rated voltage | kV | 11 | ||
Max voltage | kV | 12 | ||
Rated current | A | 400/630/1250 | ||
Power frequency withstand voltage (1 min) | Dry | kV | 42/48 | |
Wet | 34 | |||
Rated frequency | Hz | 50/60 | ||
Lightning impulse withstand voltage (peak value) | kV | 75/85 | ||
Rated short circuit breaking current | kA | 20 | 25 | |
Rated short circuit close current (peak value) | kA | 50 | 63 | |
Rated current peak tolerance | kA | 50 | 63 | |
4 s short-term resistance current | kA | 20 | 25 | |
Rated operating sequence | 0-0. 3S-CO-180S-CO | |||
Rated short circuit current open circuit | Times | 30 | ||
Mechanical life | Times | 10000 | ||
The control voltage permanent magnetic actuator | V | 220, 1 10 | ||
The secondary loop 1 min power frequency withstand voltage | KV | 2 | ||
- Products can be customized by customer requirements, above data is standard data, customized data please contact us.
Other types of meeting units
Overall dimension
- Products can be customized by customer requirements, above dimension may change, correct dimension please contact us.
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Our Production
The products are designed in strict accordance with IEC or ANSI standards, and the manufacturing steps meet the technological requirements
PT Core
Imported silicon steel sheet made of PT core, high quality insulation tape, high quality compression sponge, to ensure that resin shrinkage does not affect the performance of PT core, secondary use of high purity enameled wire.
Primary winding of PT
Mechanized winding secondary winding, all wire uses high purity copper enameled wire, each layer uses high quality insulating paper, to ensure that the layer withstand voltage qualified, to ensure the stability of partial discharge test.
Primary winding of CT
High electrolytic copper is used as primary winding, silver base welding material is used at the welding place, and semiconductor shielded paper is wrapped to ensure that the partial discharge tseting data is qualified.
Secondary winding of CT
Large capacity design secondary winding, automatic winding, high insulation and high purity enameled wire, to ensure wide capacity output under standard accuracy.
