The Ring Main Unit 8MRMU was developed under Germany technology by the engineers of over ten years switchgear production and application experience. We designed it on the concept of self-contained and totally insulated switchgear for secondary power distribution network. The products conform to China national GB and IEC standards
The Ring Main Unit 8MRMU is insensible to the environment and it is maintenance free. All the live parts are integrated well in the gas tank which SF6 is filled at 0.03 MPa gauge pressure(relative). These parts cover bus bar system, load break switch, disconnector, circuit breaker, earthing switch , fuse holders etc. The compact system,of which up to 6 loops could be accommodated in a single gas tank, is ideal solution for the installation site with a harsh climatic condition or environmental restrictions, We have gave models for the standard specification like 12kV and 24kV. Meanwhile,we can accept OEM or ODM business.
Feature:
Compact design
Maximum 6 loops could be accommodated in a single gas tank, space-saving, maintenance free
Environment-friendly structure
Hermetically tight gas tank make the parts of the primary circuit insensitive to certain aggressive ambient conditions, such as: Saline air,Air humidity, Dust And free from foreign objects etc
Maintenance-free design
Sealed pressure systems brings high reliability and safety.Finally,It is cost-saving.
Innovation system
Clear integration of secondary systems and combined protection and control units is well adapted to new system conditions.
Service life
The expected service life of gas-insulated switchgear is over 30 years. The product lifespan is 45 years
8MRMU-C Incoming Panel with Load-Break Switch
|
Voltage(kV) |
Rated current |
Short time withstand current(3s) |
Switch Type |
Insulation type |
Structure |
Remark |
|
12/24 |
630A |
20kA |
DES(LBS) |
SF6 |
Max.6 loops |
standard |
Specification
| Rated Voltage |
kV |
12 |
24 |
| Rated Frequency |
Hz |
50/60 |
| Power Frequency Withstand Voltage (1min)(Phase to Phase, Phase to Earth) |
kV |
42 |
50 |
| Power Frequency Withstand Voltage (1min)(Isolation Gap) |
kV |
48 |
60 |
| Lightning Impulse Withstand Voltage(Phase to Phase, Phase to Earth) |
kV |
75 |
125 |
| Lightning Impulse Withstand Voltage(Isolation Gap) |
kV |
85/95(optional) |
145 |
| Rated Current |
A |
630 |
630 |
| Rated Active Load Breaking Current |
A |
630 |
630 |
| Closed Loop Breaking Current |
A |
630 |
630 |
| Rated Breaking Current for Cable Charging |
A |
10 |
10 |
| Rated Earthing Fault Breaking Current |
A |
31.5 |
31.5 |
| Rated Short Circuit Making Current(Peak) |
kA |
50 |
50 |
| Short Time Withstand Current (4s) |
kA |
20 |
20 |
| Rated Peak Withstand Current (Peak) |
kA |
50 |
50 |
| Mechanical Endurance |
Operating Cycles |
5000 |
5000 |
| Rated SF6 Filling Pressure (Relative) |
MPa |
0.03 |
0.035 |
| Protection Degree |
IP67 for Gas Tank, IP4X for Enclosure
outdoor enclosure IP54(optional) |
| Overall Dimensions(Width*Height*Depth)mm |
340*1450*780 |
Note: *.Depends on the rating value of the fuse.
Company Profile
Founded in 2002, Sanhe Power Tech is a national high-tech enterprise that specializes in power quality products, R&D of technology and solutions, production,service etc. It becomes industry-leading company.
The company has got multiple technologies including.
28 invention patents,
24 software copyrights,
22 national standards and 15 industry standards drafting.
Sanhe Power Tech is a member of international committees such as
the International Electrotechnical Commission (IEC)
the Institute of Electrical and Electronics Engineers (IEEE) etc.
The software development system has passed the CMMI evaluation of the American SEI.
There are three main business covering:
A full range of power quality testing and governance products and complete solutions.
Distributed new energy system products and advanced solutions.
Primary and secondary engineering based on "dual carbon" and energy management with standardized and professional engineering services.
Our Advantages
Simulation of GRID Reactive Load Flow
Analysis of L-C Circuit Amplitude-frequency Characteristic
Integration & Relay Coordination Reaction
Characteristic Curve of Permanent Magnet Breaker
Sampling & Filtering of Electronic Circuit
IGBT Driving & Protection
PWM Technology
Technology about Semiconductor Forced Commutation
Thermal Simulation & Heat Exchange Design
Feed-forward Second-order Complex Vector Algorithm
3D & Data Simulation
Instrumented IOT Communication
VP Scheduling & Dispatcher
Digital Twins of Micro-Grid & Islanding-Grid
FAQ
What kind of payment terms can we accept?
Payment in advance,Installment payments,Letter of credit(L/C).
What is the lead time of products?
According to different products, the lead time is different.
For standard products like APF,SVG, the lead time is one week.
For customized capacitor bank etc, the lead time is 25 to 45 days.
How to find the product model if you are some demand?
If you need our technical guide,please advise your problem details as much as you can,we can give more reasonable solution.
You may provide following drawings or report
Single line drawing
Panel primary scheme drawing
Power quality test report(mainly about harmonics)
How to find the product model if you have details electrical drawings?
Please advise Load name plate, load working condition, existing power factor, target power factor, harmonic times etc Or Rated voltage,compensation capacity, harmonic times(reactor detuning factor), other components etc.
How to find the product model if you can not provide enough information?
We can supply your products according to your technical requirement.
We can go to your project site and give a professional test report after test.
Why do we choose Sanhe power quality solution?
Sanhe has specialized in over 20 years experience in power quality products and solution. We have met most of power quality problems and gave the solutions.
What kind of technical service does Sanhe provide?
• Project-site power quality test ( or test report from customer)
• Improvement solution and budget
• Product solution and price
• Products supply
• Product commissioning
What kinds of standards does Sanhe product conform to?
Except China standards, Sanhe products also conform to IEC standards including
IEC61921 :2003 IEC61000-4-5:2005
IEC60529:2001 IEC60931-1: 1996
IEC60439-1 :2005 IEC60664-1 2007
IEC60831-1: 1996 IEC61000-4-3/2/4/5/18 IEC61000-2-4
IEC60255 IEC62208 2011…
IEC255-22-1
What is the compensation effect after using Sanhe products?
• Harmonic filtering meets standard
• Power factor is over 0.95,electrical bill saving,low reactive power penalty killing
• Reducing the loss of transformer and line
improve the distribution ability,
prolong the lifespan of electrical equipment
How long is the product guarantee time?
Usually,the guarantee time is one year. However,we can accept over 5 years too. Please contact our sales to get details information.
How to become the distributor or agent of Sanhe brand products?
Sanhe is looking for overseas distributor and agent. If you are interested in it, please feel free to contact us.
Audited Supplier 
){kind=link}