| Brand | ROCKWILL |
| Model NO. | 25kV SF6 Ring Main Unit Switchgear |
| Rated voltage | 24kV |
| Rated frequency | 50/60Hz |
| Series | RMU |
Description
The SF6 insulated switchgear is suitable for middle voltage power distribution system with a rated voltage of 11kV and 40.5kV. It could be used as RMUs in a power supply network, fault isolating switches and sectionalizing switches. If equipped with distribution automation devices (FTU/DTU) and communication devices, the SF6 insulated switchgear could communicate with the control center, measure the cable voltage, current, etc, and monitor the working status of
SF6 gas insulated ring main unit(RMU/C-GIS)
Safe ring/plus RMR type SF6 gas insulated ring main unit is integrating with SF6 infill cabinet which gather with LBS, VCB, Fuse, ES, DS, etc.
By the perfect integration of stationary type and flexible expansion, RMR type SF6 gas-insulating compact close metal switchgear(Ring main unit) with the adoption of the modular design, is suitable for end-user or network node, meanwhile meets the requirement of all kinds of switching substations cabinet-type transformer substations and cable branch cabinets. It characters on its compact structure, safety and reliability, longevity and maintenance free.
This product is in conformity with the standards of IEC60420,
Technical data
Item |
Unit |
Switch |
Rated voltage |
kV |
24 |
Power frequency withstand voltage |
kV |
50 |
Impulse withstand voltage |
kV |
125 |
Rated current |
A |
630 |
active load |
A |
630 |
closed loop |
A |
670 |
off load cable charging |
A |
141 |
earth fault |
A |
160 |
earth fault cable charging |
A |
91 |
Making capacity |
kA |
40 |
Short time current 3 sec |
kA |
16 |
Environmental Conditions
Suitable Altitude: ≤2000mSuitable
Temperature: -40℃ ~ +55℃Relative
Humidity: Daily mean ≤95%, monthly mean ≤90%
Gradation of Earthquake Damage: ≤ Level 8
Product feature
Panel structure: The panel body is enclosed by 2mm aluminium-zinc plated steel plate after multi-bending. It is simple, firm, delicate and peculiar.
Busbar compartment: The busbar compartment is located in the top and connect with neighhboring panel.
Load break switch is a separated unit with SF6 gas.
Cable compartment: Approximate 75% room of connecting cable and installing fuse, earthing switch and PT.
Mechanism chamber and interlock: The chamber consists of operating mechanism, mechanism interlock, position indicator, auxiliary contact trip coil, charge indicator and interlock.
LV chamber: It is lockted in the top. It mainly used for installing instrument, relay and motor.
Circuit breaker compartment: The circuit breaker (SF6 or Vacuum) is located below load break switch.
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