MEMU

NRT-12 Solid Edge Insulated Ring Main Unit

Main features of the product

Made of naturally degradable materials, the gas box does not contain SF6 gas, and all materials meet the requirements for recyclable and reusable use

The core unit (gas box) adopts a special epoxy resin for the main circuit, which is processed by advanced integrated special sealing technology to achieve a protection level of up to IP67

The main busbar connection is located at the top of the gas box, forming an independent metal enclosed busbar chamber on the cabinet. The main busbar connection is arranged longitudinally in three phases, making it easy to install and expand

Complete logic and mechanical interlocking system, integrated with mechanical switch position indication and panel simulation diagram

Fully insulated, fully shielded, plug-in cable, maintenance free, easy to install

Technical parameter


Serial numberNameUnitMain technical parameters
1 Rated insulation level Rated voltagekV12
2 Rated short-time power frequency withstand voltage -Alternating, relative to each otherkV42
 -Isolation fracturekV48
3 Rated impulse withstand voltage -Alternating, relative to each otherkV75
 -Isolation fracturekV85
4 Rated frequency50/60Hz
5 Rated current Busbar (standard)A630A
 Busbar (optional)A1250A
6 Altitudem≤4000
7 Wind speedm/s<34
8 Earthquake intensityNot exceeding 8 degrees
9 Installation and operation sitePlaces without fire, explosion, chemical corrosion, and severe vibration








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