HUNAN ELECTRIC POWER INSULATOR AND APPARATUS CO., LTD

language

Oil filled current transformer, Oil-paper insulation CT, Dead tank type(Hair pin type), 36kV--550kV

Oil filled current transformer, Oil-paper insulation CT, Dead tank type(Hair pin type), 36kV--550kV

Oil-filled current transformers is applied for metering and protect in 36~550kV High-voltage substation.

Classification :

Current Transformers --CT

Product Inquiry :

sales@sandian-electric.com

Inquire Now

Product details

36kV-550kV LB-series current transformer

Oil-filled current transformers is applied for metering and protect in 36~550kV High-voltage substation.

——The features of the equipment comply withIEC 60044-1, IEC 61869-2, IEEE/ANSI C57.13, CAS, AS

——Modern and compact design，good insulation performance，high mechanical strength

——There are various options on output and accuracy class

——The most modern manufacturing technology on oil-paper-insulation manufacture

——Strict quality control and routine inspection

Main Technical parameters

• Standards: IEC61869-2, ANSI(IEEE)C57.13, AS,BS and etc

• Highest system voltage: 36~550kV

• Rated power frequency: 50Hzor60 Hz

• Polarity：Negative

• Rated primary current: Up to 4000A

• Rated secondary current: 1A or 5A

• Primary continuous current: 1.2~2.0Uncontinuous

• No. of the secondary windings: 1~8

• Accuracy class of the windings for measurement: IEC cl0.15, 0.2S, 0.2, 0.5S, 0.5, 1, ANSI 0.15S, 0.15

• Accuracy class of the windings for protect: 5P, 10P, 5PR, 10PR,PS, C400,C800,TPY, TPS, TPX, TPZ, PX

• Rated output: 5~200VA,others on request

• Security factor of the instrument (Fs):5, 10

• Short-time thermal current and dynamic stable current:

36~72.5kV :Ith=31.5kA( 3s); Idyn=80kA (peak)

123~765kV: Ith=40-63kA (3s); Idyn=100~160kA (peak)

• Partial discharge:≤5pC under the voltage 1.2Um/√3

• The dielectric loss factor:≤0.005 (10kV and um/√3)

• Temperature rise limit: ≤60K

• Ambient temperature:-50~+50°C

• Altitude: Standard design is less than 2000mOr highervalues onrequest

• Creepage distance ratio:25 or 31(mm/kV)

• Earthquake standard design: up to 0.5g

• Accuracy limit coefficient：5, 10，15，20，25，30，40

• Accuracy limit conditions of the TPY class:

a. Symmetrical multiple of the short time current Kssc=20 or 25

b. Time constant of primary windings Tp: 100ms

c. Direct Current Amount of short circuit current 100% (full migration)

d. Stipulated operating cycle

C-0.1S-O-0.5S-C-0.1S-O or C-0.1S-O-0.4S-C-0.1S-O

e. The guaranteed transient error time during reclosing：40ms or 50ms

f. Remanence coefficient≤0.1

500kV,400kV,330kV,275kV,230kV,220kV,161kV,150kV,138kV,132kV,115kV,110kV,88kV,69kV,66kV,46kV, 34.5kV,33kV, 22kV, 13.8kV, 10kV oil filled current transformer, high voltage Current transformer High voltage CT.

SANDAIN 78 Nos 330kV CTs operating in Belarus, type: LB-362, Supply for Nuclear Power Electric T & D project.

SANDIAN 45 Nos 330kV CTs operating in China, 500kV DC-AC back-back convector Substation,
Special CT: current ratio1:1 A, type: LB-362