LVQB(T)-35/66/110/220 Current Transformer

Introduce:

It adopt Sf6 gas of  high electric-strength as the insulating medium .

When comparing with oil-immersed transformer,this product has advantages of  good insulation peformance ,long service life,short performance,long service life,short production cycle,simplified processes,oil free,maintenance free,safe and reliable running .

It meets the modern power grid’s high reliability requirements to the power transmission and transformation equipment.

Mainfeatures:

  • The product adoptsinverted structure.is composed of shell,explosion-proofsheet,machine body bushing.base.density.relay andother parts.
  • There is shielding partinsidethe productthats usedtoimprovethe elect ricfield.the secondaryleadwi reis connectedinan airtightjunction box.the shifeldmuually ellcan be divided into tee type and bell -lartypetwotypes.
  • Maininsulation part adopt structure of coaxial columned uniform electricfield Priman,guide rodandsecondaryshielding partformthe coaxial columneduniform electricshifeldmuually Adopt primary series and parallel connection mod to change the current ratio,also could adopt primary parallel connection.all transformation ratios are got from the secondary tap.
  • Base of the product eqipped withSF6 gasdensity relay.rated pressure is 0.4MPa ,when the internal pressure of product is 0.35Mpa ,density relay will give an alarm,when the pressure 0.2Mpa ,density relay will give another alarm SF6 density relay  has automatic temperaturecompensation function.
TRANSDUCER
Altitude note exceed 2000 m (the ones exceed 2000m shall be designed separately)
Ambient temperature -40C°-+50C°
Max monthly mean relative humidity 0.9
10min max average wind velocity 35m/s
Maxice coating thickness 10mm
class of pollution III,IV class
Rated insulating level current transformer of 35kV
current transformer of 66kV 72.5/140/325kV
current transformer of 110kV 126/200/480kV
current transformer of 220kV 252/395/950kV
Short-time thermal current 50-63kA
Rated peak with stand current 125-160kA
With stand voltage level under zero gauge pressure 13times of max working voltage of equiment
Partial discharge level 1.2 times of max working voltage of equipment <5pC
Annual gas leakage rate <0.5%
Water content of SF 6 gas <150*10-6(V/V)
Radio interference level 1.1 times of max working voltage of equipment radio interference voltage <500uV
Specific creepage distance of ecternalinsulation 25mm/kV or 31mm/kv
Static bearing load of primary terminal 2000N-6000N
Max total mass of product current transformer of35kV:450kg (there into mass of SF5 gas is 4kg)
current transformer of66kV 500kg (there into mass of SF5 gas is5kg)
current transformer of110kV 600kg (there into mass of SF5 gas is 7kg)
current transformer of220kV 1400kg (there into mass of SF5 gas is 23kg)

Tee type

LVQB(T)-35/66/110/220 Current Transformer-heyi

Tee type

LVQB(T)-35/66/110/220 Current Transformer-heyi

Tee type

LVQB(T)-35/66/110/220 Current Transformer-heyi
Type Dimensions
A B C D E
LVQB-35 1335 1630 1150 340 18
LVQB-66 1695 2040 1200 400 18
LVQB-110 2180 2460 1290 475 18
LVQB-220 3270 3655 1460 610 24
No. Name
1 Explosion-proof device
2 Tee type shell
3 primary connectoin terminal
4 extranal insulation bushing
5 Secondary junction box
6 discharge valve/Gas charge
7 Density Relay
8 Base
9 Conductive barin series connection

Bell-lartype type

LVQB(T)-35/66/110/220 Current Transformer-heyi

Bell-lartype type

LVQB(T)-35/66/110/220 Current Transformer-heyi

Bell-lartype type

LVQB(T)-35/66/110/220 Current Transformer-heyi
Type Dimensions
A B C D E
LVQB-35 1335 1630 1150 340 18
LVQB-66 1695 2040 1200 400 18
LVQB-110 2180 2460 1290 475 18
LVQB-220 3270 3655 1460 610 24
No. Name
1 Explosion-proof device
2 bell-lartype type shell
3 primary connectoin terminal
4 extranal insulation bushing
5 Secondary junction box
6 discharge valve/Gas charge
7 Density Relay
8 Base
9 Conductive barin series connection










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    24Hs online service   365Ds NON-Stop Production   20Ys Professional Manufacturers Professional designer and manufacturer of current transformer,cooperated with Siemens ,schneider Fuji electrical softbank LG samdsung.
    Company HEYI Electrical CO.,LTD Contact person Bethy
    Tel 86-13968747975 E-mail bethy@heyiele.com
    ADD Xinguang Ind.Zone, Liushi Town, Wenzhou, Zhejiang, China

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