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KYN28-17.5
KYN28-17.5 Indoor Metal – Clad Withdrawable Switchgear
The 17.5kV indoor metal armored withdrawable switchgear is a medium to high voltage equipment designed specifically for overseas specific areas and domestic railway traction scenarios. It complies with GB/T 3906-2020, IEC 62271-200, and EN 50123 standards and is suitable for the 17.5kV traction distribution system of some countries in South America, Africa, as well as domestic high-speed and freight railways. The equipment adopts a reinforced modular structure, with a focus on optimizing traction load adaptation and multi standard compatibility design. It has the characteristics of shock and vibration resistance, high degree of customization, and strong overseas adaptability, and can operate stably in complex traction conditions and cross standard distribution systems.
Features
1. Exclusive adaptation for traction load, strong impact resistance:
Customized traction specific circuit breakers and protection modules can withstand high-frequency impact loads and current fluctuations caused by the start stop of traction locomotives, with a breaking response time of ≤ 20ms, avoiding the expansion of traction load faults.
2. Compatibility with overseas regional standards:
It meets national standards, IEC, and European railway standards (EN 50123), and can customize voltage standards, wiring methods, and instrument configurations according to the target region. It supports installation sizes in both imperial and metric systems and is suitable for railway scenes in South America, Africa, and Europe.
3. Anti vibration electromagnetic shielding, suitable for railway scenarios:
The cabinet adopts an integrated frame and shock-absorbing connectors, with mechanical strength increased by 40% compared to conventional products, and can withstand continuous vibration during railway operation; Simultaneously equipped with a full metal electromagnetic shielding structure, reducing the impact of electromagnetic interference from the traction system on the equipment.
4. Fast fault isolation to ensure traction power supply:
Integrated with a dedicated fault location module for the traction system, it can quickly locate fault points such as short circuits and leakage, and with the help of a fast circuit breaker, achieve millisecond level isolation of the fault area to avoid affecting the overall traction power supply system.
5. Multi language intelligent operation and maintenance, convenient overseas operation:
equipped with English, Spanish, Portuguese and other multilingual operation interfaces and manuals, intelligent modules support multilingual data feedback, can provide overseas on-site installation, debugging and operation and maintenance training, and adapt to the localized operation and maintenance needs of overseas railway projects.
The product has a rated current of 800A-3150A, a short-circuit breaking capacity of 50kA-63kA, and a rated short-time withstand current of 50kA (3s); Support vacuum circuit breaker configuration, using electric operating mechanism; The default protection level is IP54, and a salt spray resistant version can be customized for coastal railway scenes; Provide EN 50123 railway certification, UL and CE certification to meet overseas market access requirements; Support integration with railway SCADA system to achieve coordinated control of traction power supply.
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Specification
| PROJECT | UNIT | DATA | |
| Rated voltage | kV | 17.5 | |
| 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: 38 |
| Fracture: 45 | |||
| Withstand voltage for lightning impulses | kV | intermittent to the ground: 95 | |
| Fracture: 110 | |||
| Ingress protection | The shell is IP4X | ||
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FAQs
What are the differences in traction scenario adaptation between 17.5kV switchgear and 11kV overseas models?
The 17.5kV model is designed specifically for 17.5kV traction systems, suitable for railways in some countries in South America and Africa, and enhances the high-frequency impact resistance of traction loads; The 11kV model is suitable for European 11kV railways, focusing on general industrial and railway distribution, with different voltage levels and target area traction standards.
How to reduce the impact of electromagnetic interference from traction systems on equipment?
The equipment adopts a fully metal shielded cabinet, with internal components made of anti electromagnetic interference materials. At the same time, the wiring design is optimized and an electromagnetic filtering module is installed to effectively shield the high-frequency electromagnetic interference generated by the traction system, ensuring stable operation of the equipment.
How long is the typical on-site commissioning cycle for overseas railway projects?
The standard debugging cycle is 7-10 days, and the manufacturer is equipped with a bilingual technical team stationed on site, which can quickly complete equipment installation, wiring debugging, and operation and maintenance training; Complex projects can extend the on-site time according to requirements to ensure that the equipment is compatible with the local traction system.
What is the difference in protection between the anti salt spray version and the regular version?
The anti salt spray version adopts marine grade anti-corrosion coating, stainless steel fasteners, and waterproof seals. The internal components are sprayed with anti salt spray insulation coating, and the protection level is upgraded to IP55. It can operate for a long time in high salt spray environments along the coast, and its service life is extended by 8-10 years compared to the ordinary version.
Related Applications
South American railway traction distribution: used for 17.5kV railway traction substations and distribution facilities along the line in South America, adapted to local railway traction standards, with strong anti vibration and anti electromagnetic interference performance, which can ensure stable power supply for traction locomotives. At the same time, the multilingual operation and maintenance function is convenient for local operation.
Distribution of African mining railways: Suitable for mining railways in Africa that use 17.5kV voltage levels, providing power for traction locomotives, loading and unloading equipment, etc. The reinforced structure can withstand mining vibrations and dust environments, and the fast fault isolation function can avoid local faults affecting mining transportation.
Power distribution for domestic high-speed railway test sections: used for the 17.5kV traction system test section of domestic high-speed railways. The customized protection module can adapt to the load fluctuations and debugging needs of the test section, and is linked with the railway SCADA system to achieve precise control and data acquisition of traction power supply.
