Energy storage label for ring main unit

What is the electrical and mechanical strength of extensible ring main unit?

Electrical and mechanical strength of extensible ring main unit shall be designed to operate in a system to withstand a short circuit current of 21 kA for 1 second or more at 13.8 kV nominal voltage. Ring switch shall be load breaking and fault-making type.

What is a SafeLink ring main unit?

ABB's type-tested SafeLink ring main unit (RMU) is an SF6 insulated RMU utilising the latest developments in switchgear technology to provide a very compact switchgear solution. SafeLink is a completely sealed system with a stainless steel tank containing all live parts and switching functions.

What is the warranty period for extensible ring main unit?

7.1 The vendor shall guarantee the extensible ring main unit against all defects arising out of faulty design or workmanship or defective material for a period of two years from the date of delivery. 7.2 Warranty period for gas tightness shall conform clause 5.15.3 of IEC 60694.

How to store smart ring?

If any damage has occurred, a claim must be submited to the carrier immediately. Smart Ring must be stored indoors in a dry and well-ventilated area until it is installed and put into operation. It can be stored in temperatu-res between –50 and +50 degrees Celsius, and humidity <70%.

How does EFI work in a medium voltage ring network?

EFIs help the operator to find the fault location easily in medium voltage ring networks. Earth fault is indicated with a LED flashlight and a flag when asymmetrical currents are detected in three phase cables. EFI is fed via either auxiliary supply with internal batteries or core balance current transformer.

Is smart ring recyclable?

Smart Ring is constructed of material that has a limited efect on the environment or that can be recycled. We do NOT use SF6 gas that afect the ozone layer and contribute to the Greenhouse Efect. Smart Ring is recyclable to 96%.