Description
This model of voltage and current combined transfofreer (another name is metering tank) is applied to a three-phase circuit of Ac50Hz with a rated voltage of 35 kV to be used for volt, current, and eneray measuring as well as protection live relaying. It is suitable for urban. rural outdoor transformer substations as well as other kinds of volt transformer substations in industrial enterprises. Adding an active, reactive energy meter to a combined transformer is called a high-voltage power metering tank. This product could replace an oil-immersed combined transformer fmetering tank).
Type designation
Construction
This model transformer possesses an outdoor epoxy resin casting type wholly-sealing and post-type mechanism, for this product adopts outdoor epoxy resin for casting, so this product has many advantages, such as anti-electric arc, anti-ultraviolet radiation, anti-aging, long service life, etc. This product is composed of two sets of single-phase wholly insulated voltage transformers, forming “V/V” wiring mode, and two current transformers are sequentially series connected to A and C phases; moreover, the secondary coil of the current transformer owns a tap, through which it gains different current changes. Based on the three-phase, two-component V/V wiring mode, the corresponding upgraded product is a three-phase, three-component V/V wiring high-voltage power metering tank.
Technical data
- The combined transformer conforms to given provisions in GB20840.4-2015《combinedtransformer》;
- Current transformer conforms to the provisions in GB20840.2-2014,20840 1-2010《currenttransformer》;
- Voltage transformer conforms to given provisions in GB20840.3-2013,20840.1-2010《voltagetransformer》;
- The zinc oxide arrester must be installed in a position less than one meter away from the product’s installation place. for lightning protection.
Volage transformer
| 型号(Type) | 额定电压比 Rated voltage ratio(V) | 准确级 Accuracy classes | 额定输出 Rated output(vA) | 极限输出 Limit output (vA) | 额定绝缘水平 Rated insulation level(kV) |
|---|---|---|---|---|---|
| JLSZV-35W | 35000/100 | 0.2 | 30 | 500 | 42/95/195 |
| 0.5 | 50 |
Current transformer
| 型号(Type) | 额定电压比 Rated voltage ratio(V) | 准确级 Accuracy classes | 额定输出 Rated output(vA) | 额定短时热电流（1 th ）Rated short-time thermal current(KA) | 额定动稳定电流（1 dyn ）Rated dynamic current(KA) | 额定绝缘水平 Rated insulation level(kV) |
|---|---|---|---|---|---|---|
| JLSZV-35W | 5~200/5 | 0.2S | 10 | 100 | 1n | 2.5 | 1tn | 42/95/195 |
| 0.2 | 10 |
Overall Dimension
When ordering, please specify the following:
1. The voltage ration;
2. accuracy class and secondary output;
3. Insulation class and service conditions.
