24kV single phase disconnect (commonly known as “knife switch”) generally refers to a high-voltage isolating switch, that is, an isolating switch with a rated voltage of 1kV and above, usually referred to as an isolating switch. It is the most commonly used electrical appliance among high-voltage switching appliances. It itself Its working principle and structure are relatively simple, but due to its large usage and high working reliability requirements, it has a greater impact on the design, establishment and safe operation of substations and power plants.
Description
24kV single phase disconnect (commonly known as “knife switch”) generally refers to a high-voltage isolating switch, that is, an isolating switch with a rated voltage of 1kV and above, usually referred to as an isolating switch. It is the most commonly used electrical appliance among high-voltage switching appliances. It itself Its working principle and structure are relatively simple, but due to its large usage and high working reliability requirements, it has a greater impact on the design, establishment and safe operation of substations and power plants.
Product Feature
The GW9 outdoor high-voltage isolating switch has a single-phase structure. Each phase is composed of a chassis, a pillar insulator, a blade, and a contact. There are screws on the side of the blade to adjust the contact pressure and a spring for compression. The upper end is equipped with a fixed pull buckle and a self-locking device connected to it, which is used for opening and closing of the insulated hook rod. It has the advantages of large contact area, low contact resistance, good electrical conductivity, and high mechanical strength.
Normal Service Conditions:
Packing
Normal packing will be carton+ pallet. Pallets securing your primary packaging (and your product) in a stack to facilitate movement and storage, it provide additional protection. Special packaging arrangements are available upon user request.
Specification Chart
| Items | Unit | Technical Parameters | ||||
| Rated Voltage | kv | 10 | 15 | 20 | ||
| Max. Operating Voltage | kv | 12 | 17.5 | 23 | ||
| Rated Insulation Level | 1 min power frequency withstand voltage | To earth | kv | 38 | 40 | 50 |
| Across open DS | 42 | 47 | 60 | |||
| Rated lightning impulse withstand voltage | To earth | 75 | 105 | 125 | ||
| Across open DS | 85 | 120 | 145 | |||
| Rated frequency | HZ | 50 | ||||
| Rated current | A | 200 | 400 | 630 | ||
| 4s short time withstand current | Ka | 6.3 | 12.5 | 20 | ||
| Peak withstand current | Ka | 16 | 31.5 | 50 | ||
| Mechanism supplied for disconnector | CS8-1 CS8-D CD8-5 Rain type manual mechanism or CX6 motor drive mechanism | |||||
Application
The isolating switch is mainly used to isolate the parts that require power outage and the live parts in the high-voltage power distribution device. It is widely used in various power systems, including the following scenarios: Substation scenario: In the substation scenario, the isolating switch is mainly used to cut off various connections between power stations and isolation circuits within substations. Line connection scenario: In the power line connection scenario, an isolation switch can be used to isolate the faulty part or the maintenance part to ensure the normal operation of the entire power system.
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