GW4-72.5 Outdoor High Voltage Disconnect Switch | Enhanced Safety & Reliability | Chennuo Electric-Chennuo Electric Technology Group Co., Ltd

Feature

The switch features a grounding knife that effectively prevents misoperations such as 'live grounding and grounding switch closing,' eliminating the need for separate grounding lines for operators.

It can be flexibly configured for single-side grounding, double-side grounding, manual mechanisms, electric mechanisms, and integrated lightning arresters. The switch includes mechanical interlocks to prevent misoperations and can be equipped with external electromagnetic locks to interlock between the main knife and grounding knife, as well as between the isolating switch and circuit breaker.

Parameter

Model	Rated voltage (KV)	Rated current(A)	Limiting passing current(Peak value) (KA)	5 Second Stable Current (KA)
GW4-72.5	72.5	600A	50	14
GW4-72.5D	72.5	1000A	80	21.5

Operating Environment Conditions:

Altitude & Temperature: Altitude does not exceed 3000m; ambient temperature is not lower than -40°C and not higher than +40°C.
Wind & Seismic Limits: Wind speed does not exceed 35mm/s (as specified in source specifications); earthquake intensity does not exceed 8 degrees.
Environmental Adaptability: Suitable for polluted areas such as large cities and near industrial and mining enterprises.
Restricted Locations: Not suitable for places with fire and explosion hazards, severe vibrations, or chemical substances that cause serious corrosion to metals and insulation materials.

Typical Application Scenarios:

Photovoltaic (Solar) & Wind Power Stations: Widely applied in renewable energy power generation projects.
Substations & 72.5kV Grids: Deployed as an updated 72.5kV-class outdoor switching solution for main grid distribution.
SVG Static Var Generators & Energy Storage: Used as supporting equipment matching SVG and energy storage power stations.

Frequently Asked Questions (FAQ)

Q1: What are the primary application fields for the GW4-72.5kV disconnecting switch?
A: It is widely applied in photovoltaic power stations, wind power stations, substations, SVG static var generators, and energy storage power station supporting systems for no-load circuit operations.

Q2: How does the switch protect against dangerous misoperations like live grounding?
A: The switch features built-in earthing switch blades that effectively prevent "closing lines with live wires" and "earthing wires with live power", saving operators from having to handle separate manual grounding wires.

Q3: What are the environmental and altitude limits for normal operation?
A: It is rated for altitudes up to 3000m, ambient temperatures between -40°C and +40°C, wind speeds up to 35mm/s, and earthquake intensities up to 8 degrees, while being well-suited for polluted areas near cities and industrial zones.

Q4: Can this switch integrate into automated or unattended substations?
A: Yes. The product can be equipped with optical sensors for our "one-key sequential control" feature, making it fully capable of supporting unattended substations and double-confirmation positioning.