KYN28 Series Withdrawable Metal Clad Switchgear - China Suppliers and Factory for 2.5-34.5kV Applications
KYN28 indoor metal-clad withdrawable switchgear (hereinafter short as switchgear) is a complete power distribution device for 3.6~24kV, 3-phase AC 50Hz, single-bus and single-bus sectionalized system. It is mainly used for power transmission of middle/small generators in power plants; power receiving, transmission for substations in power distribution and power system of factories, mines and enterprises, and starting of large high-voltage motor, etc., so as to control, protect and monitor the system.
General
The switchgear meets IEC298, GB3906-91. In addition to be used with domestic VSI vacuum circuit breaker, it can also be used with VD4 from ABB, 3AH5 from Siemens domestic ZN65A, and VB2 from GE, etc., it is truly a power distribution device with good performance.
In order to meet the requirement for wall mounting and front-end maintenance, the switchgear is equipped with a special current transformer, so that the operator can maintain and inspect it in front of the cubicle.
In order to meet the requirement for wall mounting and front-end maintenance, the switchgear is equipped with a special current transformer, so that the operator can maintain and inspect it in front of the cubicle.
Service environment
● a) Air temperature: Maximum temperature: +40℃; Minimum temperature: -15℃.
● b) Humidity: Monthly average humidity 95%, Daily average humidity 90%.
● c) Altitude above sea level: Maximum installation altitude: 1000M.
● d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
● e) No frequent violent shake
Structure & Basic Components of Switchgear
Overall size and weight
| Item | With VS1, VD4 inside | With VS1, VD4 inside | With 3AH5, ZN65A |
|---|---|---|---|
| W×D×H(mm) | 650×1400×2200 | 800(1000)×1500×2200 | 800(1000)×1700×2200 |
| Weight (kg) | 700 | 800 | 900 |
Notice:
When the rated current is more than 1600A, cubicle width shall be 1000 mm, and cubicle height will be 1660mm and for schema of rear overhead line in.
1) Width of cabinet: 650mm (compound insulation) or 800mm (air insulation) at current 2) Width of cabinet: 1000mm at current > 1250A;
3) Depth of cabinet: 1400mm, at cabinet width of 650mm (compound insulation) when employing configuration of incoming/outgoing cables;
4) Depth of cabinet: 1500mm, at cabinet width of 800mm (air insulation) when employing configuration of incoming/outgoing cables;
5) Depth of cabinet: 1600mm, when employing configuration of rear overhead incoming/outgoing cables.
When the rated current is more than 1600A, cubicle width shall be 1000 mm, and cubicle height will be 1660mm and for schema of rear overhead line in.
1) Width of cabinet: 650mm (compound insulation) or 800mm (air insulation) at current 2) Width of cabinet: 1000mm at current > 1250A;
3) Depth of cabinet: 1400mm, at cabinet width of 650mm (compound insulation) when employing configuration of incoming/outgoing cables;
4) Depth of cabinet: 1500mm, at cabinet width of 800mm (air insulation) when employing configuration of incoming/outgoing cables;
5) Depth of cabinet: 1600mm, when employing configuration of rear overhead incoming/outgoing cables.
| A | B | L1 | B1 | Reference weight (Kg) |
|---|---|---|---|---|
| 650 | 1400 | 380 | 315 | 700 |
| 800 | 1500 | 530 | 900 | |
| 1000 | 1500 | 730 | 490 | 1100 |
| 1600 overhead | - | 1200 | ||
| 900 | 1700(with 3AH5) | 600 | 415 | 1000 |
Structure Features
1) Compartments: Busbar, circuit breaker, cable, and low-voltage compartments.
1 - Main device: circuit breaker, contactor; 2 - Current transformers; 3 - Earthing switch; 4 - Voltage transformers; 5 - Support-bushing insulators; 6 - Bushing insulators; 7 - Surge arresters; 8 - Support insulators (reactance); 9 - Main busbars; 10 - Connecting busbars; 11 - Earth-fault current transformer; 12 - Earthing conductor; 13 - Metal movable partitions; 14 - Cable ducts (optionally); 15 - Vent flaps.
1 - Main device: circuit breaker, contactor; 2 - Current transformers; 3 - Earthing switch; 4 - Voltage transformers; 5 - Support-bushing insulators; 6 - Bushing insulators; 7 - Surge arresters; 8 - Support insulators (reactance); 9 - Main busbars; 10 - Connecting busbars; 11 - Earth-fault current transformer; 12 - Earthing conductor; 13 - Metal movable partitions; 14 - Cable ducts (optionally); 15 - Vent flaps.
Schematics of dimensions of switchgear
Dimension in brackets means dimension of heavy-current cubicle
Main components characteristics
 |
VS1-12 indoor drawable vacuum circuit breaker. Rated voltage 12kV up to 24kV; Rated current 630A up to 4000A; Rated short circuit breaking current 20kA up to 40kA; Mechanical life 10,000 times. |
 |
VD4 embeded pole indoor vacuum circuit breaker. Rated voltage 12kV up to 24kV; Rated current 630A up to 4000A; Rated short circuit breaking current 20kA up to 40kA; Mechanical life 10,000 times. |
 |
VSM magnetic actuator indoor VCB. Rated voltage 12kV up to 24kV; Rated current 630A up to 4000A; Rated short circuit breaking current 20kA up to 40kA; Mechanical life 100,000 times. |
Transportation, Maintenance and Order
Transportation and Storage:
Transport vertically by fork truck or manual handling. Storage should be in a dry, ventilated indoor warehouse. Outer package validity is normally 1 year.
Maintenance:
Maintenance-free for 3 years under normal conditions. Yearly maintenance periodicity for ring main units is recommended. Tasks include fastening electrical connectors, cleaning components with a dust collector, and performing manual/electrical switching operations.
Transport vertically by fork truck or manual handling. Storage should be in a dry, ventilated indoor warehouse. Outer package validity is normally 1 year.
Maintenance:
Maintenance-free for 3 years under normal conditions. Yearly maintenance periodicity for ring main units is recommended. Tasks include fastening electrical connectors, cleaning components with a dust collector, and performing manual/electrical switching operations.
Order Requirements
Complete-set Product Documents: Qualification Certificate, Installation/Operation Instruction, Packing List, and Engineering Design Documents.
Required Order Information:
- Wiring diagram of Main circuit Loop & Special Technical Requirements.
- Installation Arrangement Plan.
- Component specifications and schematic diagrams of auxiliary/control loops.
Required Order Information:
- Wiring diagram of Main circuit Loop & Special Technical Requirements.
- Installation Arrangement Plan.
- Component specifications and schematic diagrams of auxiliary/control loops.
Frequently Asked Questions
What standards does the KYN28 switchgear comply with?
The switchgear meets international and national standards including IEC298 and GB3906-91.
What is the operating temperature range for this equipment?
It is designed for service environments with a maximum temperature of +40℃ and a minimum temperature of -15℃.
Which circuit breakers are compatible with KYN28?
It can be used with domestic VS1, ABB's VD4, Siemens' 3AH5, domestic ZN65A, and GE's VB2 vacuum circuit breakers.
What are the maintenance requirements?
The unit is maintenance-free for 3 years under normal conditions. A routine check is recommended annually for ring main units.
What is the maximum installation altitude?
The maximum installation altitude for standard units is 1000 meters above sea level.
What information is needed to place an order?
Customers should provide the main circuit wiring diagram, installation arrangement plan, and component specifications.