Products Description

The JN15-12DD indoor high-voltage grounding switch is an intelligent grounding switch based on the JN15-12 series manual grounding switch. It is mainly designed to provide the convenience of remote unmanned control. Currently, it accounts for more than 70% of the State Grid projects. After comprehensive assessment, its performance meets the technical standards of GB/T1985 "AC High-voltage Disconnectors and Grounding Switches" and IEC 129. It is suitable for AC power systems of 12kV and below, and can be used with various standard high-voltage switch cabinets as grounding protection.

product-454-255

Product Specifications

No.	Name	Unit	Data
1	Rated Voltage	kV	12
2	Rated Frequency	Hz	50/60
3	Rated short time withstand current	kA	31.5
4	Rated withstand current (peak)	kA	80
5	Rated duration of short circuit	s	4
6	Rated powder frequency withstand voltage	kV	42
7	Rated lightning impulse withstand voltage	kV	75
8	Mechanical endurance	Times	3000
9	Gap distance between the opening	mm	≥125
10	Phase center distance	mm	150

Product Advantages

The product size is small, with a phase spacing of 150mm

The structure is simple and compact, and the weight is light

Flexible operation and easy installation

The closing speed and opening speed are independent of manual operation

Equipped with manual and electric operation modes

External intelligent controller, remote operation, support Modbus RS485 communication

Product Applications

The grounding cabinet of the power equipment is used to protect the safety of personnel performing line maintenance.

Product Outline Drawing

electric earthing switch

Note: The earthing switch provides two directional output shafts; the main shaft extends to the left for left operation and extends from the right for right operation.

Secondary Wiring Diagram

Under normal circumstances, the grounding switch provides 2 sets of contacts in each of the closing and opening positions;
The electric grounding switch is subject to the following figure.

earthing switch

Note: The earthing switch controller usually uses the same intelligent controller as the center-mounted trolley circuit breaker, and the five-protection operation interlock is realized through the controller with the circuit breaker's electric chassis, switch status and other signals.

why choose us

product-717-476

Our Mission and Vision

Since our founding, we have been driven by a mission to revolutionize power transmission and distribution systems. Our vision is to expand our international market share and establish our VTZ brand as a symbol of quality and innovation in the electrical industry. We are committed to becoming a global leader, known for our dedication to advancing technology, ensuring quality, and prioritizing customer satisfaction.

After-sales and Service

We are committed to providing exceptional after-sales support to our global customers. Our services include worldwide technical support and warranty coverage, such as online remote technical support, video training, and on-site installation guidance. During the warranty period, we respond quickly to equipment defaults, and provide repair or replacement services, with the option to extend warranties as needed. To ensure effective communication, we also offer multilingual support and provide a comprehensive feedback mechanism that allows us to track customer satisfaction and continuously improve our service quality.

Excellence in research and development

Innovation is at the core of our business. We have independently developed the VTZ Series Vacuum Circuit Breakers and continue to invest in research and development to meet the evolving needs of the electrical industry. Our R&D team consists of senior technical experts with decades of experience in the design and manufacture of high and low voltage electrical equipment. Their expertise, combined with our advanced facilities, allows us to stay ahead of industry trends and continually optimize our product offerings.

Advanced manufacturing and production

We operate one of the most advanced and standardized assembly line manufacturing facilities in the industry, equipped with the latest technology, enabling us to produce a wide range of high quality electrical products with precision and efficiency. Wecomply with GB 1984-2024 and GB/T11022-2020 standards to ensure the highest quality. Our commitment to excellence is reflected in the durability, reliability, and compatibility of our products.

Adapting to industry trends

Guided by our strategic development plan, we continuously adapt our products to align with the latest trends in smart grids, power system automation, and high altitude environments. Our leading high-current, high-voltage, and long-life products are designed to meet the rigorous demands of today's power systems, providing our customers with reliable, maintenance-free solutions that stand the test of time.

Honors And Certifications

product-620-877 product-880-1274