faraday cage of HV transformer PD test

Application:

HV test shielding room  (faraday cage) are Widely used in power cable, transformer, transformer switch, transformer substation and other High voltage levels of partial discharge test or impulse test.

Technical parameters:  

Ø Faladay cage Size：17.5m×7.5m× 6m(height)

Ø Control room ：3m×2m×3m

Ø Motor driven airtight swing door :2.5×2.5（H）m ,upper transmission

Ø Shielding and grounding of Faraday Cage: it is a 6 surface shielding body,overall electrical connection among these 6 surface,multipoint grounding of main body.

Ø Efficiency after electromagnetic shielding  (to meet requests for PD testing )

     0.5~1.6MHz    ≥60dB；

Ø Background noise:< 5PC

Ø Grounding resistance of grounding electrode：< 0. 5Ω (by B&D ready )

Ø There are 6 air-vents on top of roof.

Ø There is a switch box in cage but at one meter above ground.

Ø There are 9 lighting on roof,its illumination will be morn than  250lks at one meter above ground.

Ø Power supply into Faraday cage will be equipped filter.

Ø About ground connection wire :indoor ground copper bar

Ø Surface of Main body will be galvanized sheet and electrostatic

Ø spraying on surface.its craft and material meets China national standard.

Ø To meet the requirements of design and maintain,steel sheet split mounting type structure will be adopted.