KYN28A-12(Z)(GZS1) type metal-claded withdrawable AC metal-enclosed switchgear, it is suitable for three-phase AC 50Hz power system, used to receive and distribute electric energy and control, protect and monitor the circuit.
This product meets the standards: GB3906 “Alternating-current metal-enclosed switchgear and controlgear for rated voltage above 3.6kV and up to and including 40.5kV”, GB/T11022 “Common specifications for high-voltage switchgear and controlgear standards”, lEC60298 “A.C. metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52kV”
Overview
KYN28A-12(Z)(GZS1) type metal-claded withdrawable AC metal-enclosed switchgear, it is suitable for three-phase AC 50Hz power system, used to receive and distribute electric energy and control, protect and monitor the circuit.
This product meets the standards: GB3906 “Alternating-current metal-enclosed switchgear and controlgear for rated voltage above 3.6kV and up to and including 40.5kV”, GB/T11022 “Common specifications for high-voltage switchgear and controlgear standards”, lEC60298 “A.C. metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52kV” .
Normal Use Conditions
Ambient air temperature: -15℃~+40℃.
Humidity conditions: Daily average relative humidity: ≤95%.
The daily average water vapor pressure ≤2.2kPa.
The monthly average relative humidity is 90%.
The monthly average water vapor pressure is 1.8kPa.
Altitude: <1000m.
Earthquake intensity: ≤8 degrees.
The surrounding air should not be significantly polluted by corrosive or combustible gas, water vapor, etc.
Places without frequent severe vibration.
When used under normal conditions exceeding GB3906, the user and the manufacturer shall negotiate.
Model Meaning
Product Features
The enclosure of the product is entirely made of aluminum-zinc-coated steel sheet processed by machine tools and assembled with bolts after multiple bending and forming. It has high mechanical strength, which effectively ensures the neatness and beauty of the product. The cabinet door is coated with plastic. It has strong impact resistance and corrosion resistance, and the product enclosure with IP4X protection level.
The main switch of this product can be equipped with VD4 type vacuum circuit breaker and C3 series fixed load switch produced by ABB, and it can also be equipped with a variety of domestic series vacuum circuit breakers (such as VS1, VH1, VK, ZN28) to replace foreign similar product.
Regardless of the circuit breaker selected, the air insulation distance of the bare conductor can be guaranteed to be greater than 125mm, and the composite insulation is greater than 60mm. The circuit breakers have the unique advantages of long life, high parameters, low maintenance, and small size. KYN28-12 metal-claded center-mounted metal-enclosed switchgear is suitable for 3.6-12kV three-phase AC 50Hz power grids, which is used for receiving and distributing electric energy, and for controlling, monitoring and protecting circuits. It can be used for single bus, single bus section system or double bus system. The switchgear complies with IEC298 “A.C. metal-enclosed switchgear and controlgear for rated voltages above 1kV and up to and including 52kV”, IEC694 “Common clauses for high-voltage switchgear and controlgear standards” China GB3906 ” Alternating-current metal-enclosed switchgear and controlgear for rated voltages above 3.6kV and up to and including 40.5kV” and DL404 “Alternating-current metal-enclosed switchgear and controlgear for rated voltages above 3.6kV and up to and including 40.5kV” Germany 0670 “A.c. switchgear and controlgear for voltages above 1kV” and other standards. And it has perfect and reliable anti-misoperation function.
Technical Parameters
| Rated voltage | kV | 3.6, 7.2, 12 | |
| Rated frequency | Hz | 50 | |
| Rated current of circuit breaker | A | 630, 1250, 1600, 2000, 2500, 3150 | |
| Rated current of switchgear | A | 630, 1250, 1600, 2000, 2500, 3150 | |
| Rated short time withstand current (4s) | kA | 20, 25, 31.5, 40 | |
| Rated peak withstand current (peak value) | kA | 50, 63, 80, 100 | |
| Rated short circuit breaking current | kA | 20, 25, 31.5, 40 | |
| Rated short circuit making current (peak value) | kA | 50, 63, 80, 100 | |
| Rated insulation level1min power frequency withstand voltage | Phase-to-phase, phase-to-earth | kV | 25, 30, 42 |
| Across open contacts | kV | 27, 34, 48 | |
| Lightning impulse withstand voltage (peak value) | Phase-to-phase, phase-to-earth | kV | 40, 60, 75 |
| Across open contacts | kV | 46, 70, 85 | |
| Protection level | IP4X outside the shell, IP2X when the compartment and circuit breaker door are opened | ||
Functions
The switchgear structure is shown in the figure below. The all-metal modular assembly structure, the cabinet body is made of imported aluminum-zinc plate with strong anti-corrosion ability, without surface treatment, processed by CNC high-precision equipment, using advanced multi-folding technology, connection It is connected with blind rivet nuts and high-strength bolts, with high precision, light weight and good strength.
The switchgear can be equipped with the ZN63A-12 (VS1) series, VD4 series, ZN65 series and other vacuum circuit breakers produced by Ghorit, with wide adaptability and strong interchangeability. The handcart is equipped with a working position, a test position, and each position has a positioning and display device, which is safe and reliable.
The cable room can be equipped with up to 9 single-core cables. The equipment has reliable mechanical and electrical locks to fully meet the “five prevention” requirements. Each room is equipped with pressure relief channels to ensure personal safety during operation.
Overall Dimensions
Installation Dimensions
| Switchgear width A | Switchgear depth B | L1 | L2 | L3 | L4 |
| 800 | 1500 cable | 530 | 630 | 150 | 490 |
| 1660 overhead | 530 | 630 | 310 | 650 | |
| 1000 | 1500 cable | 730 | 830 | 150 | 490 |
| 1660 overhead | 730 | 830 | 310 | 650 |
