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Supply of Insulated Ring Main Unit
Reference: DID9574L16/L5 12/12/2015, Location: Asia
Category: Circuit Breakers
Scope of Work
The company bids for supply, installation, testing and commissioning of 11kV extensible SF6 insulated Ring Main Unit with VCB at site. The RMU shall be outdoor type comprise of two(02) Nos Load Break Switch and two (02)Nos Vacuum Circuit Breaker and should be tested in accordance to IS/IEC 62271 or equivalent standards. It should be ready for operation on delivery. The RMU to be supplied against this specification are required for vital installations where continuity of service is very important. The design, materials and manufacture of the equipment shall, therefore, be of the highest order to ensure continuous and trouble-free service over the years.
The ring main unit shall consist of the following configurations:
(i) 2 Nos. ring switches (Isolators) for through feed and 1 No. circuit breakers for tee-off according to manufacturer's type-tested configuration.
(ii) 2 Nos. 630A, 11kV Incoming Load Break Switches with integral Earth Switch (iii) 1 No. 630A, 11kV Feeder Vacuum Circuit Breakers with microprocessor based IDMT 3 O/C + E/F numerical relays.
(iv) Voltage presence indicating system (VPIS) in all modules: Make: Electrotech/Siemens or equivalent
(v) 110V/ 12V Power pact with 12 Volt battery for auxiliary power supply, Make: Allen Bradley or equivalent.
The terminals of the switches shall be suitable for installation of XLPE cable sizes of 3C 11kV 240 sqmm. All live parts of the switchgear and busbars assembly shall be grouped together and SF6 gas insulated in a gas-tight stainless steel chamber, and sealed for life. 3.1.2 The terminals of the switches shall be suitable for installation of XLPE cable sizes of 3C 11kV 240 sqmm. All live parts of the switchgear and busbars assembly shall be grouped together and SF6 gas insulated in a gas-tight stainless steel chamber, and sealed for life.
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Related Tenders:
Accumulators and Storage batteries
Batteries
Cable Trays
Cables
Cathodic Protection
Circuit Breakers
Contactors
Control Panels
Earthing materials
Electric fittings & junction box
Frequency Inverter
General
Lighting
Panel Components
Starter
Switches
Transformers
Umbilical Lines
UPS
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