Sales service hotline: 0532-58517159

Sales service hotline: 0532-58517159

252kV Intelligent Combination Appliance

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Product Name: 252kV Intelligent Combination Appliance

product description

ZF50-252 (L) gas-insulated metal-enclosed switchgear (GIS), with a rated current of 4000A and a rated breaking current of 50kA, is a high-tech product developed after optimized design based on digesting and absorbing advanced GIS / GCB technologies at home and abroad.

Performance characteristics

Modular design to meet different needs of users

Miniaturized design, high technical performance

Adapt to a variety of operating mechanisms, maintenance-free operation

Short on-site installation cycle and high operational reliability

Main electrical parameters of 252kV combined electrical appliance (GIS):


project

parameter

Rated voltage

252 kV

Rated insulation level

1min power frequency withstand voltage (fracture / ground)

(460 + 145) kV / 460kV

Lightning impulse withstand voltage (fracture / ground)

(1050 + 200) kV / 1050 kV

Rated frequency

50 Hz

Rated current

3150, 4000 A

Rated short-circuit breaking current

50 kA

Rated peak withstand current

125 kA

Short-time withstand current (RMS)

50 kA / 3s

SF6 gas leakage rate

﹤ 0.3% / year

SF6 gas humidity

With electrolytic decomposition products (transfer acceptance value / long-term operation allowable value)

≤150 / 300uL / L

No electrolytic decomposition products (transfer acceptance value / long-term operation allowable value)

≤250 / 500uL / L

Partial Discharge

Per interval / per single insulation

≤5 / 3Pc

Structural layout

breaker

Three-phase box

Main bus

Three-phase common box

Circuit breaker operating mechanism

Hydraulic and spring mechanism

Circuit breaker operation

Split-phase operation, three-phase mechanical linkage

Interval size

1.8-2.2m