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126kV Intelligent Combination Electrical Appliance

252kV intelligent combination electrical appliance

Overview

? 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 through optimization and design based on the digestion and absorption of advanced GIS/GCB technology at home and abroad.

Performance Characteristics

Modular design to meet the different needs of users

Miniaturized design with high technical performance

Adapting to various forms of operating mechanisms

maintenance free operation

Short on-site installation cycle and high operational reliability.

<p>Main electrical parameters of 252kV GIS:</p> <p>&nbsp;</p> <table> <tbody> <tr class="firstRow"> <td colspan="2" style="vertical-align:center" width="60%"> <p style="text-align:center"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Project</span></span></span></span></span></p> </td> <td style="vertical-align:center" width="30%"> <p style="text-align:center"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Parameter</span></span></span></span></span></p> </td> </tr> <tr> <td colspan="2" style="vertical-align:center" width="421"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Rated voltage</span></span></span></span></span></p> </td> <td style="vertical-align:center" width="251"> <p align="center">252 kV</p> </td> </tr> <tr> <td rowspan="2" style="vertical-align:center" width="179"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Rated insulation level</span></span></span></span></span></p> </td> <td style="vertical-align:center" width="242"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">1min power frequency withstand voltage (break/ground)</span></span></span></span></span></p> </td> <td style="vertical-align:center" width="251"> <p align="center">（460+145）kV/460kV</p> </td> </tr> <tr> <td style="vertical-align:center" width="242"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Lightning impulse withstand voltage (break/ground)</span></span></span></span></span></p> </td> <td style="vertical-align:center" width="251"> <p align="center">（1050+200）kV/1050 kV</p> </td> </tr> <tr> <td colspan="2" style="vertical-align:center" width="421"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Rated frequency</span></span></span></span></span></p> </td> <td style="vertical-align:center" width="251"> <p align="center">50 Hz</p> </td> </tr> <tr> <td colspan="2" style="vertical-align:center" width="421"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Rated current</span></span></span></span></span></p> </td> <td style="vertical-align:center" width="251"> <p align="center">3150、4000 A</p> </td> </tr> <tr> <td colspan="2" style="vertical-align:center" width="421"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Rated short-circuit breaking current</span></span></span></span></span></p> </td> <td style="vertical-align:center" width="251"> <p align="center">50 kA</p> </td> </tr> <tr> <td colspan="2" style="vertical-align:center" width="421"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Rated peak withstand current</span></span></span></span></span></p> </td> <td style="vertical-align:center" width="251"> <p align="center">125 kA</p> </td> </tr> <tr> <td colspan="2" style="vertical-align:center" width="421"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Short time withstand current (effective value)</span></span></span></span></span></p> </td> <td style="vertical-align:center" width="251"> <p align="center">50 kA/3s</p> </td> </tr> <tr> <td colspan="2" style="vertical-align:center; word-break:break-all" width="421"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">SF6 gas leakage rate</span></span></span></span></span></p> </td> <td style="vertical-align:center; word-break:break-all" width="251"> <p align="center">&lt;0.3%/year</p> </td> </tr> <tr> <td rowspan="2" style="vertical-align:center; word-break:break-all" width="179"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">SF6 gas humidity</span></span></span></span></span></p> </td> <td style="vertical-align:center" width="242"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Electrolytic decomposition products (handover acceptance value/long-term operation allowable value)</span></span></span></span></span></p> </td> <td style="vertical-align:center" width="251"> <p align="center">&le;150/300uL/L</p> </td> </tr> <tr> <td style="vertical-align:center" width="242"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">No electrolytic decomposition products (handover acceptance value/long-term operation allowable value)</span></span></span></span></span></p> </td> <td style="vertical-align:center" width="251"> <p align="center">&le;250/500uL/L</p> </td> </tr> <tr> <td style="vertical-align:center" width="179"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Partial discharge</span></span></span></span></span></p> </td> <td style="vertical-align:center" width="242"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Each interval/individual insulation component</span></span></span></span></span></p> </td> <td style="vertical-align:center" width="251"> <p align="center">&le;5/3Pc</p> </td> </tr> <tr> <td rowspan="2" style="vertical-align:center" width="179"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Structural layout</span></span></span></span></span></p> </td> <td style="vertical-align:center" width="242"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Circuit breaker</span></span></span></span></span></p> </td> <td style="vertical-align:center" width="251"> <p style="text-align:center"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Three phase distribution box</span></span></span></span></span></p> </td> </tr> <tr> <td style="vertical-align:center" width="242"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Main busbar</span></span></span></span></span></p> </td> <td style="vertical-align:center" width="251"> <p style="text-align:center"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Three phase common box</span></span></span></span></span></p> </td> </tr> <tr> <td colspan="2" style="vertical-align:center" width="421"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Circuit breaker operating mechanism</span></span></span></span></span></p> </td> <td style="vertical-align:center" width="251"> <p style="text-align:center"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Hydraulic and spring mechanism</span></span></span></span></span></p> </td> </tr> <tr> <td colspan="2" style="vertical-align:center" width="421"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Circuit breaker operation mode</span></span></span></span></span></p> </td> <td style="vertical-align:center" width="251"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Split phase operation, three-phase mechanical linkage</span></span></span></span></span></p> </td> </tr> <tr> <td colspan="2" style="vertical-align:center" width="421"> <p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋體"><span style="font-family:Calibri">Spacing size</span></span></span></span></span></p> </td> <td style="vertical-align:center; word-break:break-all" width="251"> <p align="center">1.8-2.2m</p> </td> </tr> </tbody> </table>