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LGBJ-66 Outdoor organic insulation 66kv current transformer
Feature
1,It is organic insulation type product. The external insulation is silicone rubber petticoat.
Electric field evenly distributed, partial discharge small amount and stable. Small dielectric is loss
2, The current ratio can be changed easily by change the connection method in shielding enclosure to facilitate the realization to series or parallel connection.
3, All parts, such as stainless bolts. Name plate are rust-free all the time.
4, The product has no oil, no ceramic, no gas.
Technical data
Rated primary voltage | 66kv |
Highest voltage for equipment | 72.5kv |
Rated frequency | 50 or 60 Hz |
Rated current ratio | 2×50-2×1000/5or 1A |
Number of secondary windings | 1-6 |
Accuracy of measuring winding | 0.2, 0.2s, 0.5, 0.5s |
Accuracy of protection winding | 5p or 10p |
Rated secondary output | 20-50VA |
Accuracy limit factors | 15, 20, 25, 30 |
Instrument security factor | ≤5 or 10 |
Partial discharge under 1.2Um/√3Kv | ≤5Pc |
Dielectric dissipation factor tg under 10KV-Um/3Kv | ≤0.002 |
Power frequency withstand voltage on primary windings | 230(275)kv 200(230)kv 140kv rms |
Rated lightning impulse withstand voltage | 550(650)kv 450(550)kv 325kv peak |
Power frequency withstand voltage between primary sections | 3kv rms |
Power frequency withstand voltage on earth screen to earth | 5kv rms |
Power frequency withstand voltage on secondary windings and secondary windings to earth | 3kv rms |
secondary winding inter-turn withstand voltage | 4.5kv peak |
Mechanical strength(three direction) | 2500N |