1, 132kv current transformer 2, safety and prevent the danger of explosion. 3, 20years' sales experience
LVQB-132(110, 66)Outdoor Gas-insulation type 132kv current transformer
1,This product is of F6 gas insulation inversed structure. Primary winding is of penetrating type conducting rod structure; max short time withstand current reaches 63kA/3s
2,Primary winding runs through the center, free of the influence of leakage flux, with measuring accuracy reaching class 0.1 and class 0.2s
3,The upper enclosure is processed from welded aluminum alloy, with metal bursting disc will rapidly release pressure after internal pressure rises to 0.85Mpa, hence improve the product safety and prevent the danger of explosion.
4,Secondary winding is cast in aluminum shielding case by organic materials, hence the secondary circuit will not suffer electric shock caused by insulation breakdown.
5,There are two types of external insulating bushings available for user choice: fiber glass bushing with silicon rubber umbrella skirt: high-strength porcelain properly.
6,Seal rung is made from imported fluorine rubber. Its annual leakage rate is less than 0.5%.
7,Pedestal is of double-layer anticorrosion protection; stainless steel fasteners, nameplate and all other parts are guaranteed be rust-free all the time
8,The pedestal is equipped with density meter which end display internal gas pressure and density and send out signal when internal gas pressure reduce to alarm pressure requesting gas supply.
Technical data
Rated primary voltage | 132(110,66)kv |
Highest voltage for equipment | 145(126,72.5)kv |
Rated frequency | 50 or 60 Hz |
Rated current ratio | 2×200-2×3000/5or 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 factor | 15, 20, 25, 30 |
Instrument security factor | <5 or <10 |
Partial discharge under 1.2Um/√3Kv | ≤5Pc |
SF6(20)rated gas pressure Gas supply pressure | 0.4MPa 0.35MPa |
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 |
LVQB-132 Outdoor Gas-insulation type 132kv current transformer
