| Product name: | JENJH8-220W series electronic voltage transformers | ||||||
| specification: | ![]() |
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| Category: | High voltage electrical appliances -- electronic instrument transformer | ||||||
| Price: | factory price | ||||||
| Brand: | Shanghai | ||||||
| Place of Origin: | China | ||||||
| Available Quantity: | batch | ||||||
| delivery cycle: | Spot goods (or inquire by telephone) | ||||||
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1、 Overview (Description)
The JENJH8-220W series electronic voltage transformer is an insulated grease sealed and fully enclosed product, suitable for use in power systems with a rated frequency of 50Hz or 60Hz and a rated voltage of 220kV, where the neutral point is effectively grounded. It is used for energy metering, voltage monitoring, and relay protection. This product complies with the standards of IEC60044-7:1999 and GB/T20840.7-2007 "Electronic Voltage Transformers".
3、 Structure Introduction (Construction)
The JENJH8-220W series electronic voltage transformer is a fully enclosed pillar structure that adopts the principle of capacitive voltage division. The external insulation consists of a silicone rubber outer sheath and umbrella skirt, which have the characteristics of arc resistance, UV resistance, aging resistance, long service life, pollution resistance, and moisture resistance. It is suitable for installation in any position and direction. The measurement range is wide, and there will be no strong current generated during secondary short circuit. The secondary output is a small voltage signal, with minimal power consumption. There is no need to convert large signals into small signals, simplifying the error source and improving the stability and accuracy of the entire system.
4、 Technical data of JENJH8-220W series electronic voltage transformer
1. Rated insulation level: 252/460/1050kV
2. The partial discharge level complies with the GB/T20840.7-2007 standard for electronic voltage transformers. (The conditions of the partial discharge test according to GB/T20840·7-2007《electronic voltage transformer》will be fulfilled without exception.)
3. If users have other technical requirements, they can contact our factory. (If the customer has other requirement for technology, they can contact our factory.)
4. Technical data form:
|
one |
Maximum voltage of equipment
Highest voltage of equipment |
252kV |
|
two |
Rated primary voltage
Rated primary voltage |
220/√3kV |
|
three |
Rated secondary voltage
Rated secondary voltage |
1.5V,4V, 5V,4/√3V,6.5/√3V |
|
four |
Rated output digital quantity
Rated digital output |
0x2D41 |
|
five |
Measurement level accuracy level
Accuracy class for measurement |
0.2 level (class) |
|
six |
Protection level accuracy level
Accuracy class for protection |
3P |
|
seven |
rated frequency
Rated frequency |
50Hz (or 60Hz) |
|
eight |
rated load
Rated burden |
0.001VA,0.01VA,0.1VA,0.5VA |
|
nine |
Rated wake-up time
Rated wake-up time |
0 |
|
ten |
ambient temperature
Ambient temperature |
-40℃~+80℃ |
|
eleven |
Environmental pollution level
Pollution class |
Ⅳ |