Large
- Scope
Apply to 10-35kV power network, provide metering, detection and protection signal for instrument and protection device. Mainly used for power station, substation and productive electric and engineering company.
- Technical Feature
- Integrate measurement and protection together. Quickly, completely and precisely transmit primary power signal to instruments in order to realize metering, protection, control and status monitoring.
- Small or no core character, so it can’t be saturation, won’t generate over pressure for current transformer and over current and ferromagnetic resonance for voltage transformer when they meet secondary open circuit.
- Secondary output is small voltage signal. So it is proper to connect with electronic instrument and microcomputer measurement and protection device which can simplify system structure, decrease original error and improve the whole system’s stability and accuracy.
- Wide frequency response, big measurement range, good linearity. In effective measurement range, ECT accuracy can reach 0.2S/5P, EVT -0.2/3P.
- EVT can be also treated as presence indicating device to complete inspection of primary digital voltage on line, and sometimes it can be used as insulator.
- Smaller size and lighter weight save lots space and power consumption, it is a good green product and stands for tendency.
- Easy installation, no any maintenance after operating, service life more than 30 years.
- Technical specification
- Rated service power: 3-35kV
- Current range: 20-5000A
- Accuracy: 0.2S/5P10 0.5/5P
- Rated service power: 3-35kV√3kV
- Accuracy: 0.2,0.5,3P,6P