JZW-66 voltage transformer, cycloaliphatic epoxy resin casting and outdoor installation, is widely used outdoor for measuring current, electric energy and protective relaying in the power system with the frequency of 50Hz or 60 Hz and rated voltage of 66kV or 69kV.

The product can be operated on many circumstances such as in the areas of altiplano, tropical area, chillness, coastland and dirtiness etc.

Usage terms

1.       Ambient temperature: -25-40℃

2.       Height above sea level within 1000m

3.       Installation site: outdoor

Main technical parameter

1. Highest voltage for equipment: 72.5kV

2. Rated primary voltage: 66/ kV or 69/ kV

3. Rated secondary voltage: 100/ /100/ 3 V or 110/ /110/ 3 V

4. Rated output and accuracy class:  150VA class0.2   100VA class6P

5. Limiting output ：2000VA

6. Rated power-frequency withstand voltage: 140kV

7. Rated lightning impulse withstand voltage:325kV

8. Rated insulation level: 72.5/140/325 kV

9. Technical standard accords with IEC 60044-2:2003 Part2 Instrument transformers-Part2: inductive voltage transformers