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KYN28-24 Metalclad AC Enclosed Switchgear
KYN28A-24 Metaldad AC Endosed Switchgear,Withdrawable Type (hereinafterreferred to as switchgear),suitable for indoor three-phase 50/60Hz,rated voltage 24kV power system,mainly usedin power plants,substations,industial and mining enterprises and high-rise buildings It is used to receive and distribute electric energy and to control,protect and monitor circuits.
Standard:IEC62271-200
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Product Details
Medium Voltage Switchgear
KYN28-24 Metalclad AC Enclosed Switchgear, Withdrawable Type
KYN28A-24 Metalclad AC Enclosed Switchgear,Withdrawable Type(hereinafter referred to as switchgear),suitable for indoor three-phase 50/60Hz,rated voltage 24kV power system,mainly used in power plants, substations,industrial and mining enterprises and high-rise buildings. It is used to receive and distribute electric energy and to control, protect and monitor circuits.
Standard: IEC62271-200
Selection
Operating conditions
1.+15°C~+40°C. And the average value measured within 24 hours shall not exceed 35°C
2.The average monthly relative humidity shall not exceed 90%
The average monthly water vapor pressure shall not exceed 1.8kPa;
3.Altitude: ≤1000m.
4.There is no obvious dust or smoke in the surrounding air: pollution caused by corrosive or combustible gases, vapors, or salt mist;
5.Vibration or ground motion from outside the switchgear and control equipment can be ignored;
6.The amplitude of electromagnetic interference induced in the secondary system shall not exceed 1.6kV
Features
1.The cabinet is made of aluminum-zinc coated sheet processed by CNC equipment and assembled with bolts or rivets, with a fully modular structure.
2.This switchgear has various functions to prevent misoperations, including preventing loaded trolleys from moving, preventing live coupling and earthing switches, and preventing inadvertent entry into live compartments.
The switchgear is equipped with high-quality VS1 series center-mounted AC high- voltage vacuum circuit breaker and fixed-sealed vacuum circuit breaker.
The busbar adopts heat-shrinkable insulation material as the insulation means, optimized electrode shape, and compact cabinet structure.
This switchgear is an advanced, stable performance, reasonable structure, easy-to- use, safe and reliable power distribution equipment.
Technical data
| Item | Unit | Data | |||||
| Rated voltage | kV | 24 | |||||
| Rated frequency of circuit breaker | Hz | 50/60 | |||||
| Rated insulation level | Lightning impulse withstand voltage (peak) | kV | Phase-to-phase, phase-to-ground | 60 | Isolating fracture | 79 | |
| 1min power frequency withstandvoltage (effective value) | kV | Phase-to-phase, phase-to-ground | 125 | Isolating fracture | 145 | ||
| Auxiliary control circuit power frequency withstand voltage | V | 2000 | |||||
| Rated current of circuit breaker | A | 630, 1250, 1600 2000, 2500, 3150 | |||||
| Rated short-circuit breaking current | kA | 20 | 31.5 | ||||
| Rated short-circuit closing current (peak) | kA | 50 | 80 | ||||
| Rated short-time withstand current | kA | 20 | 31.5 | ||||
| Rated peak withstand current | kA | 50 | 80 | ||||
| Auxiliary control circuit rated voltage | V | AC or DC 110/220 | |||||
| Protection degree | / | IP4X(IP2X when the front door is opened) | |||||
| Overall and mounting dimensions(mm) s(width*depth*height) | mm | 800 × 1810 ×2380 | 1000 × 1810 ×2380 | ||||
| Weight | kg | 840~1140 | |||||
Note:The depth of the overhead incoming and outgoing cabinet is 2360mm
VS1-24 Technical data
| Item | Unit | Data | ||
| Rated voltage | kV | 24 | ||
| Rated insulation level | Lightning impulse withstand voltage (peak) | kV | 60 | |
| 1min power frequency withstandvoltage (effective value) | kV | 125 | ||
| Rated frequency of circuit breaker | Hz | 50/60 | ||
| Rated current of circuit breaker | A | 630, 1250, 1600, 2000 | 630, 1250, 1600, 2000, 2500, 3150 | |
| Rated short-circuit breaking current | kA | 20 | 31.5 | |
| Rated short-circuit closing current (peak) | kA | 50 | 80 | |
| Rated short-time withstand current | kA | 20 | 31.5 | |
| Rated peak withstand current | kA | 50 | 80 | |
| Rated single capacitor bank breaking current | A | 630 | ||
| Rated back to back capacitor bank breaking current | A | 400 | ||
| Rated short-circuit breaking current breaking times | Times | 50 | ||
| Mechanical life | Times | 20000 | ||
| Rated operating sequence | O-0.3s-CO-180s-CO | |||
VS1-24 Technical data
| Item | Unit | Data | |
| Rated voltage | closing and tripping coil | V | AC220, AC110, DC220, DC110 |
| opening and tripping coil | |||
| Working current | closing and tripping coil | A | AC220 or DC220 : 1.1A |
| opening and tripping coil | AC110 or DC110 : 3.1A | ||
| Energy storage motor power | W | 80, 100 | |
| Energy storage motor rated voltage | V | AC220, AC110, DC220, DC110 | |
| Energy storage time | S | ≤10 | |
Structure and working principle
The KYN28A-24 switchgear consists of two main parts: a cabinet body and a removable component (commonly known as a handcart). The cabinet is divided into multiple functional compartments using metal partitions, such as busbar compartment, circuit breaker
compartment, cable compartment, and relay instrument compartment.
The movable components of the switchgear can be equipped with vacuum circuit breaker handcart, voltage transformer handcart, lightning arrester handcart, isolation handcart, and fuse handcart.
A. busbar room B. Circuit breaker handcart room C. Cable room D. Relay instrument room
Figure 1 Schematic diagram of KYN28A-24 Switchgear
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