Maintenance-Free Outdoor Ring Main Unit-12kV 24kV 36kV

  •  Maintenance-Free Outdoor Ring Main Unit-12kV 24kV 36kV
Atributos-chave
Marca ROCKWILL
Número do Modelo Maintenance-Free Outdoor Ring Main Unit-12kV 24kV 36kV
Tensão nominal 36kV
Corrente nominal 630A
Série RMR
Descrições de produtos do fornecedor
Descrição

Maintenance-Free Outdoor Ring Main Unit

Product description

  • It adopts prefabricated electrified and touchable silicone rubber cable head, which is fully sealed, fully insulated, maintenance-free, and reliable to ensure personal safety.
  • Compact structure, small and beautiful appearance, stainless steel cabinet, service life up to more than 20 years.
  • Under the premise of not affecting the operation of the main network, realize regional power outage maintenance and reduce the scope of power outages.
  • It can be equipped with one or more SF6 load switches.The wiring method is flexible and diverse, the branch outgoing line can reach 8 loops at most.
  • Optional lightning arrester, short-circuit fault indicator, current-limiting fuse, etc., to meet various requirements of users.

Main new advantages

  • Small size, compact structure, easy to install and operate
  • Stainless steel or metal steel board ,which thickness ≥ 2mm
  • Anti-corrosion & with special Spray-painting artworks
  • Usage life more than 30 years.
  • It can be used in some harsh environments like high or lower temerature ,some dust area
  • Fully sealed structure,without insulation distance
  • High voltage electric parts with cable connector or use silicon rubber for people safety.
  • With zno arrester
  • Its cables can be splitted into be 7 branches to work together with SF6 loading switches to reach net power-supplying.
  • The cable connector can be used as switch, it can be on or off with loading. The max on-off voltage can reach 200Amp.
  • After fix the fault indicator, user can test circuit fault very quickly
  • Cheaper cost ,save cable
  • Cable connectors comply with IEEE386 standard,all cables are suitable for crosslinking polyethylene insulated cables.

Main technical parameter

No Item Unit Data
1 Rated voltage kV 12kV 24kV 36kV
2 Rated current A 630
3 Rated short-time withstand current kA 20/3s
4 Dynamic stable current kA/0.3s 50
5 Thermally stable current kA/3s 20
6
Power frequency withstand voltage/1min
 
kV 42 55 85
7 Lightning impulse withstand voltage kV 75/85 125/150 170/185
8 Partial discharge test   Less than 9kV Less than 15kV Less than 45kV
Discharge amount: ≤10PC Discharge amount: ≤10PC Discharge amount: ≤10PC
9 Enclosure protection class   IP44
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