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DescriptionProduct InformationHigh/Low voltage switchgear refers to
the electrical products used for power system generation,
transmission, distribution, power conversion and consumption to
play the role of on-off, control or protection, voltage level in
3.6kV~550kV, mainly including high/low voltage isolation switch and
ground switch, high voltage load switch, high voltage automatic
recirculation and sectioner. High voltage operating mechanism,
high/low voltage explosion-proof distribution device and high
voltage switchgear and other categories.The switchgear has the
functions of overhead inlet and outlet line, cable inlet and outlet
line, and busbar connection. It is mainly used in power plants,
substations, petrochemical industry, metallurgical steel rolling,
light textile industry, factories and mining enterprises,
residential areas, high-rise buildings and other different
places.The high and low voltage switchgear is an important part of
the power system, which is mainly used to break the circuit,
protect the power equipment and control the power system. The
following is the main role of high and low voltage switchgear: 1.
Disconnect the circuit The high and low voltage switchgear can
successfully perform the switching operation of the circuit
breaker, that is, the switchgear can separate or connect the power
supply by controlling the switch, and ensure the continuity of
power transmission while maintaining the safety of the circuit and
equipment. 2. Protect power devices In the power system, the
transmission process of high-voltage power supply will produce
various faults, such as overload, short circuit and ground fault.
The high voltage switchgear can choose the appropriate protection
device according to the actual situation, detect and deal with
these faults in time, and ensure the normal operation of the power
equipment. 3. Control the power system The high and low voltage
switchgear can control the switch and state of the power equipment
according to the actual needs of the power system. For example,
when controlling the power system in real time, it is necessary to
precisely adjust the transmission and distribution of power, and
the high and low voltage switchgear can achieve this by controlling
the switch.Product DetailsHigh/Low voltage switchgear is usually
composed of switchgear, meters, control appliances, insulating
parts, connecting parts, mechanisms, enclosures and bases.
Switchgear is the core component of high voltage switchgear, it is
to achieve high voltage line switching, disconnecting and load
switching equipment, according to different uses can be divided
into circuit breakers, load switches, combined electrical
appliances, grounding switches and so on. Instrument is used to
display the operating status of the switch cabinet equipment, such
as ammeter, voltmeter, indicator light, etc. Control appliances are
devices used to control the operation of the switch cabinet, such
as control buttons, relays, remote controls, etc. Insulation parts
are used to isolate the parts between electrical equipment, such as
insulation board, insulation column, etc. Connecting parts are used
to connect electrical equipment between the parts, such as
conductive strips, patch panels, etc. A mechanism is a component
used to realize the action of a switching device, such as a manual
mechanism, an electric mechanism, etc. The shell is used to protect
the parts of the equipment inside the switch cabinet, such as the
steel plate shell, protective cover, etc. The base is used to
support the switch cabinet components, such as steel plate base,
Angle iron base, etc. The main materials used are as follows:
1.Cold-rolled steel or Angle steel (for welding cabinets);
2.Aluminum coated zinc steel or galvanized steel (for assembly
cabinets). 3.Stainless steel plate (non-magnetic). 4.Aluminum plate
((non-magnetic). 5.The functional unit of the cabinet 6.Main bus
room (General main bus layout according to the "product" shape or
"1" shape of two structures 7.Breaker room 8.Cable house 9.Relay
and instrument room 10.Cabinet top small bus roomProduct
ParametersHigh/Low voltage switchgear quality control:The
manufacturing of high/low voltage switchgear needs to be carried
out in strict accordance with national standards, and quality
control is required.In manufacture in the process, materials,
components, assembly, welding, insulation treatment, electrical
testing and commissioning are required quality control.At the same
time, it is also necessary to carry out inspection, testing and
acceptance.HXGN -12 High Voltage SwitchgearItemUnitDataRated
Voltagekv12Rated FrequencyHz50Rated Current of Main Busbar/Maximum
Rated Current of FuseA630,125Rated Short-time Withstands Current of
Main Loop and Grounding LoopKA/s20, 3Rated Peak Withstand Current
of Main Loop and Grounding LoopKA50Rated Shot-circuit Closing
Current of Main Loop and Grounding LoopKA50Breaking Times of Load
swit
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