KYN28A-24 Indoor AC High Voltage Metal Armored Removable Switchgear
KYN28A-24 indoor AC high-voltage metal armored movable switchgear (hereinafter referred to as switchgear) is suitable for indoor three-phase 50/60Hz, rated voltage 24kV power systems. It is mainly used in power plants, substations, industrial and mining enterprises, and high-rise buildings to receive and distribute electrical energy, and to control, protect, and monitor circuits.
The KYN28A-24 switchgear has various functions to prevent misoperation, including preventing the movement of the handcart under load, preventing the closing position of the grounding switch and the circuit breaker, preventing the live closing of the grounding switch, and preventing accidental entry into the live compartment.
KYN28A-24 switchgear is equipped with VS1, VD4, and other series of mid mounted high-voltage AC vacuum circuit breakers and solid sealed vacuum switches with excellent performance. The secondary circuit of the switchgear is equipped with advanced and reliable control and protection components; The busbar adopts insulation methods such as heat shrink insulation material or epoxy coating, optimizing the electrode shape and compact cabinet structure.
The product complies with standards such as IEC62271-200, GB1984, GB3906, GB/T11022, DL/T404, DL/T593, etc.
Main technical parameters
| Rated voltage | kV | 24 |
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| Rated frequency | Hz | 50/60 |
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| Rated | 1min Power frequency withstand voltage (effective value) (kV) | Alternate | 65 | Isolation | 79 |
| Insulation | Lightning impulse withstand voltage (peak) (kV) | Relatively | 125 | Fracture | 145 |
| Level | Auxiliary control circuit power frequency withstand voltage (V) | 2000 | |||
| Rated current | A | 630，1250，1600，2000，2500，3150 |
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| Rated short-circuit breaking current | kA | 25 | 31.5 | ||
| Rated short-circuit closing current (peak) | kA | 63 | 80 | ||
| Rated short-time withstand current (4s) | kA | 25 | 31.5 | ||
| Rated peak withstand current | kA | 63 | 80 | ||
| Rated voltage of auxiliary control circuit | V | DC or AC 110/220 | |||
| Protection level | IP4X (when the circuit breaker room door is open or the compartment is IP2X) |
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| Dimensions (width x depth x height) | mm | 800×1810×2380 | 1000×1810×2380 | ||
| Note: The depth of the overhead incoming and outgoing line cabinet is 2360mm. |
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