|
[China]
Trade Verify
Contact name:Sherlin
GuangDong Heng AnShun Electrical Power Equipment Service Co., Ltd. |
|
Verified Suppliers
|
|
|
Outdoor High Voltage Overhead Disconnect Switch Used With Electrical Vacuum Circuit Breakers Creamic Hookstick
Product Description:
High voltage disconnect switch is a type of electrical switch used
in high voltage power systems to isolate sections of the network
for maintenance or safety purposes. The switch is typically mounted
on a pole or other support structure and is used to disconnect an
overhead power line from the rest of the system.
High voltage disconnect switchEs are designed to handle high
voltages and currents and are often installed in outdoor locations.
They consist of a set of stationary and movable contacts that are
separated by an air gap. When the switch is in the closed position,
the contacts are in contact with each other, allowing current to
flow through the circuit. When the switch is opened, the contacts
are separated, interrupting the flow of current through the circuit
and isolating it from the rest of the system.
High voltage disconnect switches are an important component of
power system safety and reliability and are designed to operate in
a variety of environmental conditions. They are often subject to
rigorous testing and certification requirements to ensure that they
meet industry standards for performance and safety.
High voltage disconnect switchEs are commonly used in high voltage
transmission and distribution systems to isolate sections of the
network for maintenance or repair work. They are also used as a
safety device to protect workers from electrical hazards, such as
accidental contact with live parts of the system.
Structure:
The product being described is composed of a base (plate), post
insulator, conductive part, and interlock device. The knife is
installed on the dynamic contact knife head through bolts and is
separately connected with the static contact head. Each side is
maintained in a good contact state by the pressure of the
compression spring. The knife is a slot-shaped type, which
increases the heat dissipation surface and reduces the temperature
rise. This contributes to the mechanical strength of the knife and
makes it dynamically thermally stable against short circuits.
The interlocking parts installed at the non-rotating end of the
contact knife and the static locking hook on the static contact
form the opening locking device. When the brake is closed, the
device is self-locking, so the brake knife will not fall off due to
its own weight or the action of electric power, which could cause
the brake to open without cause.
This product is commonly used in power transmission and
distribution systems and plays a crucial role in ensuring the
proper functioning of the electrical grid. Proper safety procedures
should be followed when working with these switches, and only
qualified and trained personnel should be allowed to operate and
maintain them.
The product being described is composed of a base (plate), post
insulator, conductive part, and interlock device. The knife is
installed on the dynamic contact knife head through bolts and is
separately connected with the static contact head. Each side is
maintained in a good contact state by the pressure of the
compression spring. The knife is a slot-shaped type, which
increases the heat dissipation surface and reduces the temperature
rise. This contributes to the mechanical strength of the knife and
makes it dynamically thermally stable against short circuits.
The interlocking parts installed at the non-rotating end of the
contact knife and the static locking hook on the static contact
form the opening locking device. When the brake is closed, the
device is self-locking, so the brake knife will not fall off due to
its own weight or the action of electric power, which could cause
the brake to open without cause.
This product is commonly used in power transmission and
distribution systems and plays a crucial role in ensuring the
proper functioning of the electrical grid. Proper safety procedures
should be followed when working with these switches, and only
qualified and trained personnel should be allowed to operate and
maintain them.
Conditions:
Features:
1.High voltage and current handling capacity: high voltage
disconnect switches are designed to handle high voltages and
currents commonly found in high voltage power systems, and are
typically rated for 69 kV and above.
2.Stationary and movable contacts: high voltage disconnect switches
have a set of stationary and movable contacts that are separated by
an air gap. When the switch is closed, the contacts are in contact
with each other, allowing current to flow through the circuit. When
the switch is opened, the contacts are separated, interrupting the
flow of current through the circuit.
3.Manual or motorized operation: high voltage disconnect switches
can be manually operated or motorized, depending on the specific
application and requirements. Motorized switches allow for remote
operation, which can improve safety and convenience.
4.Outdoor construction: high voltage disconnect switches are
designed for outdoor use and are typically constructed of durable
materials such as steel or aluminum. They are built to withstand
harsh environmental conditions, such as extreme temperatures, wind,
rain, and dust.
5.Visual indicators: high voltage disconnect switches often have
visual indicators to show the status of the switch, such as open or
closed. This allows operators to quickly and easily determine the
status of the switch.
6.Safety features: high voltage disconnect switches are designed
with safety features to protect workers and the public from
electrical hazards, such as accidental contact with live parts of
the system. These features may include safety interlocks, grounding
provisions, and warning labels.
Technical Parameters:
| Serial No. | Parameter | Unit | Data | |||||||||
| 1 | Rated Voltage | kV | 12 | |||||||||
| 2 | Rated Current | Model No. | (H)GW9-12(W)/630-20 | A | 630 | |||||||
| (H)GW9-12(W)/1000-20 | 1000 | |||||||||||
| (H)GW9-12(W)/1250-31.5 | 1250 | |||||||||||
| 3 | 4s Short-time withstanding current | Model No. | (H)GW9-12(W)/630-20 | kA | 50 | |||||||
| (H)GW9-12(W)/1000-20 | 50 | |||||||||||
| (H)GW9-12(W)/1250-31.5 | 80 | |||||||||||
| 4 | Rated Insulation Level | Lightning surge withstand voltage(peak) | Polar-to-Earth (Positive & Negative) | kV | 75 | |||||||
| Interfracture (Positive & Negative) | 85 | |||||||||||
| Industrial frequency withstand voltage (1 min) (Effective value) | Dry Test/Wet Test | Polar-to-Earth | 42(Dry) 34(Wet) | |||||||||
| Interfracture | 48(Dry) | |||||||||||
| 48(Dry) | ||||||||||||
| 48(Dry) 40(Wet) | ||||||||||||
| 5 | Main Circuit Resistance | μ Ω | 630 | |||||||||
| 1000 | ||||||||||||
| 1250 | ||||||||||||
| 6 | Mechanical Life Time | times | 50 | |||||||||
| 50 | ||||||||||||
| 80 | ||||||||||||
