NU-GFPT-12-630 Semi-Enclosed PT Switch for Environmentally Friendly GIS

  • Eco-Friendly: Designed for gas-insulated, environmentally friendly PT cabinets.
  • Precision Control: Reliable voltage measurement and control power supply.
  • Compact Design: Ideal for modern, space-limited switchgear layouts.
Inquire Now WhatsApp

High-Performance NU-GFPT-12-630 PT Switch for Eco-Friendly 12kV GIS

Product Description

The NU-GFPT-12-630 PT Switch is a specialized solution engineered for 12kV/630A environmentally friendly gas-insulated PT cabinets. It performs critical functions by managing the rated and load currents of the main circuit while providing essential isolation and closing capabilities. This switch is vital for providing control power, enabling precise voltage measurement, and supporting voltage circuits for instrumentation, all within a compact and reliable design that meets GB3804-2017 and GB3906-2020 standards.

Applications

Primary use in 12kV environmentally friendly gas-insulated PT cabinets for urban power grids.

Provides voltage measurement and control power for measuring instruments and protection relays.

Suitable for substations requiring high-reliability isolation in a compact footprint.

Technical Parameters

 

No.

ItemUnitParametersRemark
1Rated voltagekV12
2Rated currentA630
3Rated short-time withstand currentkA/S20/4  25/4
4Rated peak withstand currentkA50/63
5Rated short-circuit closing currentkA50/63
6Short circuit closing timestime30
7Power frequency withstand voltage: ground/phase to phasekV42In dry air or N₂ In dry air or N₂
8Power frequency withstand voltage: fracturekV48In dry air or N₂ In dry air or N₂
9Lightning impulse: ground/phase to phasekV75In dry air or N₂ In dry air or N₂
10Lightning impulse: fracturekV85In dry air or N₂ In dry air or N₂
11Main loop resistance≤ 30
12Mechanical lifetime5000

Drawing

nu gfpt 12 630 semi enclosed pt switch for environmentally friendly gis

FAQ for Environmentally Friendly PT Switches

  • Q: Is this PT Switch suitable for extremely cold climates?

A: Yes. The NU-GFPT-12-630 is verified to operate reliably in ambient temperatures as low as -40°C, making it ideal for northern grid installations.

  • Q: Does this Potential Transformer Switch meet international safety standards?

A: It fully complies with the technical requirements of GB3804-2017 and GB3906-2020, ensuring standard-compliant safety and mechanical performance.

  • Q: Can it be installed in high-altitude areas?

A: The standard design supports altitudes up to 2000m. For higher requirements, please consult our technical team for a custom solution.

Contact us today for the NU-GFPT-12-630 technical questions or a customized PT cabinet solution.

Technical Support & FAQs

Our products are designed and manufactured in strict compliance with major international standards, including IEC 62271-100, IEC 62271-200 and IEEE C37.04 standards. All products are inspected by our Quality Control department.

We specialize in the medium-voltage range. Our vacuum circuit breakers and switchgear components are suitable for rated voltages from 7.2kV to 40.5kV. The normal current rating covers up to 4000A, and the short-circuit breaking capacity can be designed up to 40kA or higher to meet the demands of various applications, from simple distribution to heavy industrial use.

 Yes, customization is one of our core strengths. We understand that compatibility with existing equipment is critical. We offer OEM and ODM services and can customize components (like brackets, linkages, shutters) and modify breakers to be compatible with major switchgear brands such as Siemens, ABB, Schneider, GE, and others. Please provide your technical drawings or specifications for a precise solution.

Our quality assurance is embedded in every step of the process:

Material Sourcing: We use premium-grade raw materials and components from certified suppliers.

Manufacturing: Advanced CNC machinery and automated production lines ensure precision and consistency.

Testing: 100% routine tests (e.g., contact resistance, mechanical operation, HV withstand) are performed on every unit. We also conduct destructive and non-destructive tests on samples.

For standard products, our lead time is typically 1-4 weeks. For large or customized orders, the lead time will be confirmed based on the project's complexity and quantity.

Certainly. We provide comprehensive pre-sales and after-sales technical support. Our team of engineers can assist with product selection, technical drawings. We also offer detailed documentation, including manuals and drawings. In the rare event of an issue, we provide remote troubleshooting and have a efficient warranty claim process.

Our vacuum circuit breakers are engineered for superior performance and reliability, offering these key benefits:

High Breaking Capacity: Advanced vacuum interrupter technology ensures reliable interruption of high short-circuit currents.

Long Electrical and Mechanical Life: Designed for thousands of operations with minimal maintenance, significantly reducing life cycle costs.

Maintenance-Free Operation: The sealed vacuum interrupters eliminate the need for regular maintenance of the quenching medium, unlike oil or SF6 breakers.

Safety and Environmental Friendliness: They operate silently, are fire-safe, and contain no greenhouse gases (SF6), making them an eco-friendly choice.

Compact Design: Allows for space-saving switchgear designs, which is ideal for retrofitting or modernizing existing substations.

Our products are designed for global deployment. Please specify your environmental conditions for the most suitable product recommendation.

We stand behind our products with a standard 12-month warranty from the date of shipment, covering any defects in materials or workmanship under normal use and service conditions. Our warranty terms are clearly stated in our commercial contract.

 You can request a quote easily by clicking the Contact Us or  Request a Quote button. To provide you with the most accurate and competitive quotation, please have the following information ready:

Product name and model number (if known)

Technical specifications (such as Rated Voltage, Current, Short-circuit breaking current, etc.)

Quantity required

Any special requirements (customization, etc.)

Why Choose Us

technical support

Technical Support

From pre-sales consultation to after-sales service, we offer end-to-end technical support to maximize your project success. Our experts assist with product selection, system integration, troubleshooting, and maintenance, backed by continuous project tracking to keep your operations smooth and efficient.

customized solutions

Customized Solutions

We specialize in tailor-made solutions for switchgear and components, designed to fit your unique requirements. Our team collaborates closely with you to develop products optimized for performance, efficiency, and reliability—ensuring they excel in your specific application.

quality control

Quality Control

Quality is embedded at every stage. We rigorously test all materials prior to production and monitor manufacturing processes to ensure product stability. Before shipment, each unit undergoes comprehensive electrical, mechanical, and safety performance tests to comply with industry standards.

quick response (2) compressed

Quick Response

Our experienced service team provides 24/7 support year-round. Thanks to streamlined processes and a dedicated staff, we deliver 90% of quotations within 24 hours.

  • WhatsApp

  • Message

    Send Message

  • Email

    Email:info@niunielec.com

  • Top