KYN28 Series Withdrawable Metal Clad Switchgear - China Suppliers & Factory for 2.5 to 34.5kV Solutions
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
- Air temperature: Maximum temperature: +40℃; Minimum temperature: -15℃.
- Humidity: Monthly average humidity 95%, Daily average humidity 90%.
- Altitude above sea level: Maximum installation altitude: 1000M.
- Ambient air: Not apparently polluted by corrosive and flammable gas, vapor etc.
- Stability: 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 the configuration of rear overhead incoming and outgoing cables.
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 the configuration of rear overhead incoming and outgoing cables.
| A | B | L1 | B1 | Reference weight Kg |
|---|---|---|---|---|
| 650 | 1400 | 380 | 315 | 700 |
| 800 | 1500 | 530 | 315 | 800 |
| 1600 overhead | 900 | |||
| 1000 | 1500 | 730 | 490 | 1100 |
| 1600 overhead | 1200 | |||
| 900 | 1700(with 3AH5) | 600 | 415 | 1000 |
Structure Features
Compartments: Busbar compartment, circuit breaker compartment, cable compartment, low-voltage compartment.
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 embedded 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: Should be transported vertically. Long-term storage should be in dry and ventilated indoor warehouses. Outer package validity is normally 1 year.
Maintenance: Free of maintenance for 3 years under normal conditions. Maintenance periodicity is normally once a year. Includes fastening connectors, cleaning parts with dust collectors, and checking switching operations.
Maintenance: Free of maintenance for 3 years under normal conditions. Maintenance periodicity is normally once a year. Includes fastening connectors, cleaning parts with dust collectors, and checking switching operations.
Order Information
Required Documents: Wiring diagram of Main circuit Loop, Installation Arrangement Plan, Specification of components, and schematic diagrams of auxiliary/control loops.
Q1: What is the primary application of KYN28 switchgear?
It is used for power transmission in power plants, substations, factories, and mines, as well as starting large high-voltage motors for system control and protection.
Q2: Which international standards does this switchgear comply with?
The KYN28 switchgear meets the IEC298 and GB3906-91 standards for power distribution devices.
Q3: Can I use circuit breakers from other brands like ABB or Siemens?
Yes, it is compatible with VS1, VD4 from ABB, 3AH5 from Siemens, ZN65A, and VB2 from GE.
Q4: What are the environmental operating limits?
It operates within a temperature range of -15℃ to +40℃, with a maximum installation altitude of 1000M.
Q5: How often should the maintenance be performed?
Under normal conditions, it is maintenance-free for 3 years. Regular maintenance is typically performed once per year.
Q6: What documents are required for placing an order?
Customers should provide the main circuit loop wiring diagram, installation arrangement plan, and component specifications.