Understanding the different types is key to selection. Jinhand's extensive range covers all major categories:
KYN61-40.5, KYN28-24, KYN28-12.
Withdrawable circuit breaker truck for easy maintenance, fully compartmentalized for safety, robust metal enclosure.
Power plant auxiliaries, main substations in industrial plants (steel, cement, mining), large commercial building intakes.
XGN-12.
Epoxy resin cast insulation, fully sealed, unaffected by environment, compact footprint.
Urban cable distribution networks, renewable energy farms (solar/wind), hospitals, data centers, harsh environments (coastal, polluted).
SRM6-12/24, HBXGN-12/24.
Live parts enclosed in sealed, pressurized tanks filled with SF6 or eco-friendly gas. Extremely compact, maintenance-free, ideal for space-constrained or sensitive locations.
Underground substations, indoor switching stations, high-rise buildings, railways, airports, areas prone to flooding or severe contamination.
ZFW41-126.
Modular three-position switch, extremely compact layout (saves up to 70% space vs. AIS), intelligent monitoring compatible.
110kV substations in urban areas, industrial plant main incoming, hydroelectric or thermal power plants.
Selecting High Voltage Switchgear involves technical, environmental, and economic considerations. Follow this guide and leverage Jinhand's free consultation:
What is your system voltage?
12kV, 24kV, 40.5kV
What is the normal and peak load current?
1250A, 2000A, 3150A
What is the maximum short-circuit current your system can generate?
This determines the required short-time withstand (Icw) and breaking capacity (Icu). Jinhand offers ranges up to 40kA/4s and breaking up to 40kA.
We offer solutions for both.
GIS (SRM6) is the best choice for tight spaces.
Is the location polluted, salty, humid, or dusty?
Solid (XGN) or Gas (SRM6, HBXGN) insulated gear offers superior immunity.
Standard designs are for ≤1500m. For higher altitudes, Jinhand provides specially adapted designs.
This is a non-negotiable safety feature to prevent misoperation. All Jinhand switchgear includes robust mechanical or mechanical-electrical interlocking.
What level of protection (overcurrent, earth fault) and control (local/remote) is needed?
We integrate standard relays or advanced microprocessor-based units.
While AIS (KYN) may have a lower initial cost, GIS (SRM6) offers significant savings in space (real estate), installation, and maintenance over its 30+ year lifespan.
Investing in switchgear with online monitoring (temperature, partial discharge) can prevent costly outages.
Our commitment to quality is reflected in hard data. Below are extract specifications from our product certifications and test reports:
Comparative Technical Parameters Table:
| Feature/Model | KYN28-12(AIS) | XGN-12(Solid) | SRM6-12(GIS) | Unit |
| Rated Voltage | 12 | 12 | 12 | kV |
| Rated Current(Max) | 3150 | 1250 | 630/1250 | A |
| Short-Time Withstand Current(4s) | 40 | 25/31.5 | 20/25 | kA |
| Short-Circuit Breaking Current | 40 | 25/31.5 | 20/25 | kA |
| Power Freq.Withstand Voltage | 42/48 | 42/48 | 42/48 | kV |
| Lightning Impulse Voltage | 75/85 | 75/85 | 75/85 | kV |
| Insulation Medium | Air | Epoxy Resin | SF6/Dry Air | - |
| Protection Degree(Enclosure) | IP4X | IP3X | P67(Tank) | - |
| Design Lifetime | >20 years | >30 years | >30 years | Years |
| Maintenance Cycle | 5-8 years | Minimal | Sealed for Life |
|
| Footprint(Relative) | 100% | ~80% | ~30-50% | % |
Note: Varies by module type.
Vacuum circuit breakers with 10,000 mechanical operations.
All designs pass rigorous power frequency and lightning impulse tests per IEC/GB standards.
GIS products have an annual leakage rate of <0.5% and are tested for seismic withstand up to 0.4g horizontal acceleration.
Our products are tested globally. Here is unsolicited feedback from our partners:
"After years of cooperation, Jinhand's high-voltage switchgear has never had major quality issues. Their after-sales response is prompt, providing quick technical support and spare parts. They are a trustworthy long-term supplier for us."
"The collaboration with Jinhand Electrical has exceeded our expectations. They consistently adhere to the contract, ensuring smooth project progress, which gives us great peace of mind."
We provide a complete partnership, not just a product:
We analyze your needs and provide schematic diagrams, layout plans, and bill of materials.
Witness comprehensive tests at our facility before shipment. We provide full test reports.
Modifications in dimensions, busbar ratings, special coatings, or integration of specific brand components.
On-site or factory training for your operation and maintenance personnel.
We manage sea/air freight and provide a standard 18-month warranty with lifelong technical support.
A: Absolutely. Our switchgear can be equipped with intelligent microprocesser protection relays, communication gateways, and support protocols like IEC 61850, Modbus, DNP3.0 for seamless integration.
A: Our products are manufactured in compliance with GB, IEC, and ANSI/IEEE standards. We hold CE certification and can provide full Type Test Reports from recognized laboratories like the National High-Voltage Apparatus Testing Center.
A: As a major factory in China, we have significant production capacity. Standard configuration lead times range from 3-6 weeks, while fully customized solutions may take 8-12 weeks.
A: Quality is embedded in our process. We use CNC machines for precision fabrication, automatic powder coating lines, and 100% routine testing of every unit. Key components like vacuum interrupters are sourced from reputable global or domestic suppliers.
A: Yes. We maintain a strategic inventory of critical spare parts and provide lifetime support. Our technical team is available for remote or on-site assistance.
Choosing Jinhand means choosing a partner committed to your project's success. We combine engineering excellence, proven High Voltage Switchgear technology, and unmatched customer service to deliver solutions that power progress safely and efficiently.Contact Jinhand Electric Co., Ltd. Today for a Quotation or Technical Discussion!
