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Coil Number: Autotransformer
Coil Structure:
Phase: Single
Model Number: LB
Brand Name: HUEE
Place of Origin: China (Mainland)
Name: 66kv 69kv 72.5kv outdoor current transformer
Standard: IEC/IEEE/GB
Type: Oil Immersed
Internal insulation: Oil
External insulation: Porcelain
Color: Brown/White

Specifications

66kv 69kv 72.5kv outdoor current transformer

 66kv 69kv 725kv outdoor current transformer

Purpose
It is outdoor, single phase and oil immersed hair-pin type current transformer, which is used for metering and relay protection of 66/69/72.5kv, 50 or 60Hz systerm.

Standards
IEC61869-1: Instrument transformers – Part 1 General requirements
IEC61869-2 Instrument transformers - Part 2 Additional requirements for current transformers

Service condition
Ambient temperature:-40~+40℃
Altitude: LB-33(W1,W2,W3) less than 1000m

LB-33GY(W1,W2,W3) less than 3500m
Environment pollution level: Ⅱ,Ⅲ,IV

 


Technical  Data

Rared frequency Hz 50: 60
Rated voltage kV 66/69 110 132 220
Highest voltage for equipment kV 72.5 126 145 252
Power frequency withstand voltage on primary windings kV 160 230 275 460
Rated lightning impulse withstand voltage kV 350 550 650 1050
Flashover distance mm 700 1050 1300 2000
Creepage distance mm 1820: 2250 3150: 3910 3630: 4500 6300: 7820
Mechanical load N 2000 2000 2000 3000
Rated primary current  A 50~1600 50~1600 50~1600 150~2000
Rated secondary current  A 1:5
Accuracy class   0.1: 0.2: 0.5: 0.2S: 0.5S: 5P: 10P: TPS: PX....
Rated output (Recommended value) FS

1A: 10~15VA 

5A: 30~50VA

Instrument security factor VA 5: 10
Accuracy limit factor ALF 10, 15, 20, 25, 30

Short-time thermal current

( Maximum)

 KA 50KA/3s (in series)


Outline drawing

66kv 69kv 725kv outdoor current transformer

33kv Current Transformer
66kv 69kv 725kv Outdoor Current Transformer