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KYN28-35
KYN28-35 Indoor Metal – Clad Withdrawable Switchgear
35kV indoor metal armored movable switchgear is the core mainstream equipment of domestic ultra-high voltage distribution networks, which complies with GB/T 3906-2020 and DL/T 404-2018 standards. It is widely used in high-end scenarios such as urban backbone distribution networks, large substations, and super large industrial enterprises. The equipment adopts an ultra-high voltage optimized armor structure, integrates composite insulation, intelligent error prevention, and efficient heat dissipation technology, and has the characteristics of excellent rated parameters, ultimate safety performance, and strong grid adaptability. It can achieve efficient distribution, intelligent regulation, and rapid fault isolation of 35kV level electrical energy, and is a benchmark equipment for ultra-high voltage distribution in China.
Features
1. Grid level adaptation, top-notch grid connection performance:
fully compliant with domestic 35kV distribution network standards, supporting seamless integration with ultra-high voltage substations and urban backbone networks, with voltage synchronous regulation and reactive power coordinated compensation functions, accurately responding to grid fluctuations, ensuring grid stability and power quality.
2. Composite insulation technology, volume efficiency optimization:
Adopting solid insulation+vacuum insulation composite technology, the insulation distance between phases and relative to ground is reduced by 30% compared to traditional air insulation, greatly reducing the cabinet volume and saving distribution room space while improving insulation performance.
3. Intelligent anti misoperation closed-loop, safe and controllable operation and maintenance:
Integrated with mechanical interlocking, electrical interlocking and intelligent anti misoperation system, it can identify the intention of misoperation and actively block it. Combined with a remote monitoring platform, it can achieve operation record traceability and fault alarm push, eliminating high-voltage operation risks from the source.
4. Low consumption and energy-saving upgrade, in line with dual carbon requirements:
The core components are selected with ultra-low loss vacuum circuit breakers and transformers, which reduce the overall no-load loss by 22% and load loss by 16% compared to conventional products. The optimized heat dissipation structure reduces energy consumption and can be included in the national energy-saving project procurement list.
5. Standardized adaptation and convenient upgrading:
Following the standard size of 35kV distribution equipment in China, standardized wiring interfaces are reserved, which can directly replace old 35kV switchgear without the need to renovate the foundation and distribution circuit of the distribution room, adapting to the upgrading and renovation needs of existing projects.
The product has a rated current of 1600A-4000A, a short-circuit breaking capacity of 63kA-100kA, and a rated short-time withstand current of 63kA-80kA (3s); Support full vacuum circuit breaker configuration, optional permanent magnet operating mechanism; The default protection level is IP54, which can be upgraded to IP65. Coastal areas can customize a salt spray enhanced version; The intelligent module supports IEC 61850 and DL/T 634.5.1-2002 protocols, and can be connected to the distribution automation systems of State Grid and Southern Power Grid, providing a complete set of power grid project access certification.
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Specification
| PROJECT | UNIT | DATA | |
| Rated voltage | kV | 35 | |
| Rated frequency | Hz | 50 | |
| The rated current of the main bus | A | 630/1250 | |
| Current rating | A | 630/1250 | |
| Ground Loop Rated Short-Time Withstand Current (2S) | kA | 31.5 | |
| Rated short-time withstand current of main circuit (4S) | kA | 25/31.5 | |
| Rated peak withstand current (peak) | kA | 63/80 | |
| Rated short-circuit interrupting current | kA | 25/31.5 | |
| Rated insulation level | 1 minute power frequency withstand voltage | kV | intermittent to the ground: 70 |
| Fracture: 80 | |||
| Withstand voltage for lightning impulses | kV | intermittent to the ground: 185 | |
| Fracture: 215 | |||
| Ingress protection | The shell is IP4X | ||
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FAQs
What are the differences in domestic scenario adaptation between 35kV and 30kV products?
35kV is the mainstream level of ultra-high voltage in China, focusing on grid connection and supporting large substations, with high standardization and wide adaptability; 30kV fills the gap in niche long-distance scenarios and serves as a renewable energy base, with different positioning and application areas.
Can the intelligent error prevention system achieve unmanned operation?
Sure. The intelligent error prevention system can be integrated with remote operation and maintenance platforms, upload real-time operation records and fault alarms, remotely block illegal operations, and be fully adapted to the needs of unmanned distribution rooms with health monitoring functions.
Does the product meet the bidding standards for power grid projects?
Compliant. Fully meet the bidding technical requirements of State Grid, Southern Power Grid, and local power grids, with a complete set of certification certificates and testing reports, and can provide targeted bidding technical response documents to assist in project bidding.
What is the service life of the enhanced anti salt spray version?
The anti salt spray version adopts marine grade anti-corrosion coating and stainless steel connectors. The internal components are sprayed with anti salt spray coating, and the service life is extended by 8-10 years compared to the ordinary version. It can operate stably for more than 20 years in high salt spray environments along the coast.
Related Applications
Urban distribution network backbone: As the core equipment of the urban 35kV distribution network, it is used for substation outgoing lines, regional connections, and load distribution. The power grid has strong adaptability, which can ensure stable electricity consumption for residents, businesses, and public facilities, and improve the reliability and operation efficiency of the distribution network power supply.
Supporting facilities for super large substations: used for medium voltage distribution in super large substations, with composite insulation and high breaking capacity to cope with ultra-high voltage and high current working conditions in substations. The intelligent control function facilitates collaborative control with the power grid dispatch center, ensuring safe and stable operation of the power grid.
Extra large steel joint venture: provides power supply for super large equipment such as blast furnaces, converters, and continuous casting machines in steel enterprises. Its high parameter performance can withstand high currents and strong impact loads in steel production, and its low loss design reduces energy consumption costs and ensures continuous production.
Large scale water conservancy hubs: used for power distribution of generator sets, hoists, irrigation equipment, etc. in water conservancy hubs, with strengthened insulation and weather resistance design to cope with humid and multi electromagnetic interference environments in water conservancy hubs. Standardized adaptation facilitates later operation and maintenance, ensuring stable operation of water conservancy projects.
