Gas Insulated Ring Main Unit HXGN-12 Series
- Series: HXGN-12
- Type: Gas Insulated Ring Main Unit
- Application: Power systems, petrochemical, industrial and mining enterprises, data centers, port terminals, Large and medium-sized building etc
- Rated Voltage (Ur): 12kV
- Rated Current: 630A
- Short-Circuit Breaking Capacity: 20kA
- Rated short-circuit current breaking frequency: 30 times
- Mechanical Life (circuit breaker): up to 10000 times
Overview
Gas Insulated Ring Main Unit HXGN-12 Series , uses green and environmentally friendly gas as the insulating medium, avoiding the use of greenhouse gas SF6 in switchgear. At the same time, it avoids the use of non-degradable thermosetting materials in the product, so as to minimize the impact of the product on the environment throughout its life cycle.
This 12KV switchgear is a functional unit with high-voltage vacuum circuit breakers and three-position isolating grounding switches. It is connected with extended busbars and sealed in a stainless steel box filled with environmentally friendly gas. It is suitable for various environments, especially humid, sandy, dusty urban areas and industrial areas with dense buildings. The vacuum circuit breaker is used with a protective relay for transformer protection and can be equipped with electric operation for functions like telemetry, telesignaling, and remote control.
Product Description
1. Gas Insulated Ring Main Unit HXGN-12 Series Product Features:
—Main component:
a. special high-voltage vacuum circuit breakers;
b. special three-position isolating and grounding switches;
c. arc extinguishing chamber independently developed by HongFa.
—Comprehensive Product Type-Testing:
Gas Insulated RMU HXGN-12 Series has successfully undergone a complete set of product type tests (at Xi’an High Voltage Apparatus Research Institute), ensuring compliance and reliability.
— Environmentally Friendly Design:
The HXGN-12 Series from KEMUS represents a significant leap forward in the design of Gas-insulated ring main unit (RMUs). By eschewing the use of the greenhouse gas SF6, these units are not only technologically advanced but also environmentally responsible. The use of eco-friendly gases as insulating mediums ensures that our high voltage switchgear has a minimal global warming potential (GWP) of 0, aligning with global sustainability goals.
—High reliability/High security:
All high-voltage live parts are sealed in a gas chamber with environmentally friendly gas as the insulating medium. The gas box is reliably grounded to ensure that operators will not touch high-voltage live parts; the state of the insulating medium can be monitored and adjusted on site; the switch has a reliable arc discharge channel and has passed the 20 kA/1s internal arc test; the cable room cover and the switch state have a reliable mechanical interlock.
—Technical Excellence:
In order to ensure reliable welding, a domestically leading robot automatic welding system is used. The encapsulated environmentally friendly gas chamber is a sealed system with a service life of more than 30 years. The annual leakage rate is no more than 0.01%.
—Low environmental impact:
All high-voltage live parts are located in a stainless steel air chamber with a protection grade of IP67, and can be installed in places such as humid, sandy, dusty, salt-polluted, and box-type substations.
2. Gas Insulated Switchgear HXGN-12 Series Main Parameter:
Rated Voltage (Ur): 12kV
Power Frequency Withstand Voltage:42/48 kV
Lightning Impulse Withstand Voltage:75/85 kV
Rated Current: Ranges from 630A
Short-Circuit Breaking Capacity: 20kA
Rated short-circuit current breaking frequency: 30 times
Mechanical Life (circuit breaker): up to 10000 times
3.High Voltage Switch Cabinet HXGN-12 Series Dimensions:
4. High Voltage RMU HXGN-12 Series Operating Conditions :
| Normal Condition | Specification |
| Ambient Temperature | Up to +40°C (maximum), down to -25°C (minimum) |
| Humidity | Daily average not exceeding 95%; monthly average not exceeding 90% |
| Vapor Pressure | Daily average not exceeding 2.2 kPa; monthly average not exceeding 1.8 kPa |
| Altitude | Up to 1000m |
| Pollution | Free from significant pollution by dust, smoke, corrosive or flammable gases, steam, or salt mist |
| Application | sion, and severeSuitable for indoor environments free from fire, explosion, chemical corro vibration |
| Special Condition | Specification |
| Altitude Above 1000m | External insulation strength may be reduced; consider using manufacturer’s high-altitude models |
| Ambient Air Temperature | Reduce rated current in high-temperature conditions; note special requirements for low temperatures during ordering |
| Indoor Switchgear in Humid Conditions | Not typically used in climates with high humidity or rapid temperature changes; if necessary, implement preventive measures against corrosion or other hazards |
| Anti-Condensation Measures | Install anti-condensation devices, such as electric heaters, to prevent condensation |
5.Gas Insulated RMU Technical Standard:
| GB/T 1984-2014: High Voltage AC Circuit Breaker |
| GB/T 3906-2020: 3.6kV ~ 40.5kV AC metal enclosed Switchgear and Control Equipment |
| DL_T 402-2016: High Voltage AC Circuit Breaker |
| DL/T 404-2018: 3.6kV ~ 40.5kV AC metal enclosed Switchgear and Control Equipment |
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Gas Insulated Ring Main Unit HXGN-12 Series Technical Parameters
| Module Type | V Module | K Module | KPT Module | PT Module | M Module |
| Parameter Name | |||||
| Rated Voltage | 12 kV | 12 kV | 12 kV | 12 kV | 12 kV |
| Power Frequency Withstand Voltage | 42/48 kV | 42/48 kV | 42/48 kV | 42/48 kV | 42/48 kV |
| Lightning Impulse Withstand Voltage | 75/85 kV | 75/85 kV | 75/85 kV | 75/85 kV | 75/85 kV |
| Rated Current | 630 A | 630 A | 630 A | 630 A | 630 A |
| Short-Time Tolerance Current of the Main Circuit | 20/4 kA/s | 20/4 kA/s | 20/4 kA/s | 20/4 kV/s | 20/4 kA/s |
| Short-Circuit Breaking Capacity | 20 kA | ||||
| Active Load Current | |||||
| Short-Circuit Making Capacity | 50 kA | ||||
| Grounding Switch Capacity | 50 kA (5 times) | 50 kA (2 times) | 50 kA (2 times) | 1 kA | |
| Electrical Life (E2/E2) | |||||
| Circuit Breaker Mechanical Life | 10,000 cycles | ||||
| Isolation/Grounding Switch Mechanical Life | 5,000/5,000 | 5,000/5,000 | 5,000/5,000 | ||
| Mechanical Operating Sequence | O-0.3 s-CO-3 min | ||||
| Insulating Gas | Environmentally friendly gas | ||||
| Rated Pressure of Gas at 20°C | 0.02 MPa | ||||
| Gas Leakage Rate | ≤ 0.01% per year | ||||
| Arcing Test | IAC AFLR 20 kA 1 s | ||||
| Chamber Protection Class | IP67 | ||||
| Switchgear Housing Protection Class | IP41 | ||||
| Color of Switchgear Front Panel | RAL7035 | ||||
| Color of Cable Chamber Front Cover | RAL7035 |
Gas Insulated Metal Enclosed Switchgear HXGN-12 Series Basic Component
- Vacuum Circuit Breaker (VCB)
- Isolation/Earthing Switch
- Vacuum Circuit Breaker Operating Mechanism
- Isolation/Earthing Switch Operating Mechanism
- Vacuum Circuit Breaker Position Indicator
- Isolation/Earthing Switch Position Indicator
- Frontally arranged 400 series bolted cable outlet bushing with voltage dividing capacitor for power supply indicator
Gas Insulated Metal Enclosed Switchgear HXGN-12 Series Basic Component
- Internal Busbar, 630 A
- Earthing Busbar
- Operating Handle
- Lifting Lugs for Easy Handling
- Pressure Gauge for Environmentally Friendly Gas
- Interlocked cable chamber front cover with earthing switch
- Terminal Side Panel
Why Choose Kemus As Your Ring Main Unit Suppliers
Vacuum Arc Extinguishing Chamber of Gas Insulated Ring Main Unit
A. Low circuit resistance:
TD-12/1250-31.5 model as an example, using CuCr contact material and good manufacturing technology,the circuit resistance value is 7.5-9Ω.
B. High breaking capacity:
TD-12/2500-31.5 model as an example, combined with good manufacturing technology, the product pass 50 consecutive uninterrupted breaking tests at the test station. After the product was dissected, the evaporation of the contact surface was good. The maximum breaking times of the 12kV series products reached 89 times.
C. High voltage withstand level:
12kv switchgear series vacuum arc extinguishing chamber as an example, the withstand voltage level can reach the level of the 24kV series vacuum arc extinguishing chamber. The high voltage power frequency voltage level is higher than >79kV, and the lightning impulse voltage level is >125kV.
Working with us, you will get
Kemus as HongFa agent, Choose Kemus for your high voltage rmu and gain access to superior safety, innovation, and global compliance in electrical protection.
- Direct Factory Price
- Quality Without Compromise
- Supply Stability
- Delivery On Time
- Thoughtful Service
- More Options From Us
- Useful introduction and suggestion
- Less communication, better understanding
Packing & Delivery
Gas Insulated Ring Main Unit FAQ
- 01.How long does it take to deliver the HXGN-12 Series units after placing an order? Delivery times can vary based on the specific configuration and quantity ordered. Pls contact me.
- 02. Are there any additional costs associated with delivery? Delivery costs are determined by the destination and the specific requirements of the shipment. We will provide a detailed quote once the order details are finalized.
- 03.Can you provide installation services for the HXGN-12 Series units? Yes, we offer professional installation services conducted by our certified technicians to ensure proper setup and operation.
- 04. What is the warranty period for the HXGN-12 Series? Our standard warranty for the HXGN-12 Series is 18 months, starting from the date of delivery.
- 05.Are there any training sessions available for operators to learn how to use the HXGN-12 Series effectively? Yes, we provide comprehensive training sessions for operators to familiarize them with the operation and maintenance of the units.
- 06.What should I do if I encounter any issues with my HXGN-12 Series unit during the warranty period? In case of any issues, please contact our customer service immediately. We will assist in troubleshooting and, if necessary, arrange for a service visit.
- 07. Is there a maintenance plan available for the HXGN-12 Series to extend its service life? Yes, our units can be customized to meet various specifications and requirements. Please discuss your needs with our sales engineers for a personalized solution.
- 08. How do you ensure the quality and reliability of the HXGN-12 Series during manufacturing? We adhere to stringent quality control processes and comply with international standards. Each unit undergoes rigorous testing before leaving our facility.
Gas Insulated Ring Main Unit HXGN-12 Series Applications
