Ring Main Unit

• Task: Adjust
• Structure: Combination
• Mathematical Model: Non-Linear
• Signal: Continuous
• Function: Automatic Control, Protection, Monitoring
• Certification: RoHS, ISO: 9001
• Model NO.: GRM
• Condition: New
• Customized: Non-Customized
• Material: Stainless Steel
• Transport Package: Wooden Case
• Trademark: GRENO
• Origin: Xiamen, China
• Production Capacity: 50000pieces/Year

Product Description

Technical parameters :

data specification

Project	Cable feeder	Transformer feeder	Breaker V unit
Rated voltage	12/24	12/24	12/24
Rated frequency	50 or 60	50 or 60	50 or 60
Rated insulation level
Power frequency withstand voltage	50/60	50/60	50/60
Lightning impulse withstand voltage	125/145	125/145	125/145
Rated current	630	≤125 Note1	630
Breaking closing ability
Rated active load breaking current	630		630
Active load breaking current	31.5		31.5
Rated cable charging breaking current	10		10
Rated breaking current transfer		2700
Rated short-circuit breaking current		Note2	20
Rated short-circuit current	50		50
Dynamic thermal stability capabilities
Rated short time withstand current	20		20
Rated short duration	3		3
Rated peak withstand current	50		50
Mechanical life Times	3000	3000	3000
Other
Ambient temperature ºC	-40 ~ +60	-40 ~ +60	-40 ~ +60
Gas pressure...ºC when the gauge...	0.03	0.03	0.03
Degree of protection	IP67 Gas tank IP67

Note1: dependent to fuse rated current    

Note2 :dependent to fuse
Main special feature:
1:Anti-corrosion aluminized and galvanized steel cabinet, can be used in complex working situation
2:With flexible hardcart, easy for operation and maintenance
3:Full safety protection for human and electric grid
4: Multi loope distribution way