Ring Main Unit definition
Examples of Ring Main Unit in a sentence
Quantity (PCS) Within 2 years Material Description Stock Code 1 7 Indoor type Rated 33kV, Extensible, Motorized, very compact-sized, vacuum type interrupter, Ring Main Unit, with two rated 630 A main switch-disconnector and two rated 630 A Tee-Off fuse switch.
Pre-fabricated Sub-station (PSS) consisting of 11KV SF6 Ring Main Unit + Transformer + Low Voltage Switchgear with all connection accessories, fitting & auxiliary equipment in an Enclosure to supply Low-voltage energy from high-voltage system as detailed in this specification.
The high voltage equipment shall incorporate a Ring Main Unit rated 630A, 350 MVA for 3 seconds or similar equipment approved in writing by the Engineer, fitted with a suitable bracket with wooden clamping blocks, below terminals of switchgear, to clamp and support up to 185 mm² PILCDSTA cable for a 315 KVA and up to 185 mm² for 630 KVA and a SF6 or Vacuum breaker.
This specification covers the design, manufacture, inspection, testing, packaging and delivery of specified 11kV Ring Main Unit.
All operating handles shall be arranged for operation from the front of the Ring Main Unit at a suitable height, and all indicators and instruction labels shall also be visible from the front of the unit.