ZSG-40.5 AC Metal Enclosed Switchgear
◆ Applicable to 40.5kV medium-voltage system
◆ Rated current of 3150A and below
◆ Fully-insulated bus system
◆ Resistance to internal arc
◆ Advanced ventilation design
◆ Independent pressure release channels
◆ All metal partitions with independent pressure release channels in each compartment
◆ Adopting phase expansion technology to achieve a phase to phase and ground air clearance of ≥ 300mm for the busbar system and cable room
◆ Advanced processing technology reduces local discharge and extends service life
◆ Advanced heat conduction, ventilation and heat dissipation structures keep product temperature rise at a low level
◆ Reliable and comprehensive "five prevention" interlocking function effectively ensures the safety of operators and switchgear
◆ High degree of intelligence, including mechanical characteristic monitoring, temperature rise monitoring, visualization window, remote control and other functions
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Busbar System
◆ High conductivity copper pipe with patent bushing to make electric field even
◆ Busbar terminal use Cold-press single-step forming technology for high precise
◆ Joined with high-strength bolts and dished pressure washers to improve connection reliability
◆ Covered with flame retardant heat shrink tube and insulation cover on joint
◆ The height of cable terminal is increased, convenient for installation and maintenance.
◆ Metal partition and insulation bushing are installed in compartment side to avoid internal arc failure expansion -
◆ For housing protection, control, measurement and other secondary components, to control/measure/monitor remotely or locally
◆ Cable holes are provided in side for connecting control cables between panels
◆ Height is customized.
◆ Control button, switch, indicator, lamp, monitoring screen and other instruments can be installed on the door -
Circuit Breaker
◆ Diverse truck available, such as: circuit breaker truck, PT truck, isolator truck, metering truck, etc. and interchangeable
◆ Metal rails on base for the VCB truck to be racked in and out
◆ Multi-finger contactor (Tulip cluster) on VCB and static contactor in contact box on cabinet are used to form main circuit
◆ VCB truck rack in and out by manual or motor
◆ Safe shutters are provided for isolate movable contact and static contactor when VCB in test position -
Earthing Switch System
◆ Withstand at least twice short circuit closing currents
◆ Operated manually or by motor
◆ Interlock with breaker and cable compartment for safety



