Name: LVQB(T)-35/66/110/220 current transformer
Brand: Asct Current Transformer
SKU: LVQB(T)-35/66/110/220
Availability: InStock
Rating: 5 (1 reviews)

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LVQB(T)-35/66/110/220 current transformer

Description

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.

Characteristic of structure

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.

Technical Parameter

TRANSDUCER
Altitude	note exceed 2000 m (the ones exceed 2000m shall be designed separately)
Ambient temperature	-40C°-+50C°
Max monthly mean relative humidity	90%
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)

Specification

Tee type

Type	Dimensions
Type	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

Type	Dimensions
Type	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