++++General:
RMR is a ring main unit for the secondary distribution network. RMR can be supplied in 10 different configurations suitable for mostswitching applications in 12/24 kV distribution networks. It is extendable and combined with the SafePlus concept, which is ABB’s flexible, modular compact switchgear, they represent a complete solution for 12/24 kV secondary distribution networks. RMR and SafePlus have identical user interfaces. RMR is a completely sealed system with a stainless steel tank containing all live parts and switching functions. A sealed steel tank with constant atmospheric conditions ensures a high level of reliability as well as personnel safety and a virtually maintenance-free system. The RMR concept offers a choice of either switch-fuse combination or circuit-breaker with relay for protection of the transformer. RMR can be supplied with an integrated remote control and monitoring unit. This product is in conformity with the standards of IEC60420, GB/T11022, GB3804,GB3906 ++++Service environment:
a) Air temperature:Maximum temperature: +40℃; Minimum temperature:-20℃
b) Humidity:Monthly average humidity 95%; Daily average humidity 90% .
c) Altitude above sea level:Maximum installation altitude: 2500m
d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
++++ Standard instruction:
D unit configuration
See standard configuration and features of "Cable connecting module without earth switch module"
C unit configuration
See standard configuration and features of "Load break switch module"
F unit configuration
See standard configuration and features of "Load break switch and fuse combination module"
V unit configuration
See standard configuration and features of " Vaccum switch module"
++++Standard combinations also includes belowing configurations:
Voltage indicator of incoming bushing capacitive character SF6 density/pressure monitor( gas meter) with each gas cell Ring for lifting Operating handle.

 No.

  Item

  Unit

 C Module

  V Module

 Load break switch

 Circuit breaker

 1

 Rated voltage

  kV

 12

 24

  12

   24

 2

 Rated current

 A

  630

 3

 Rated frequency

 Hz

   50/60

 4

 1min Power frequency withstand voltage

  kV

 45

  55

   45

  55

 5

 Lightning impulse withstand voltage

 kV

 75

 125/150

  75

 125/150

6

 Rated transfer current

 A

 1700

 1400

 

 7

Rated active load and close circuit breaking current

 A

 630

8

Rated cable charge breaking current

 A

50&10

9

 Rated short circuit breaking current

kA

 

20

16

10

Rated short circuit making current(peak)

 kA

63

50

 63

     50

11

Short time (2s) withstand current, load switch/earth

kA

25/20

 20/20

25/20

20/20

12

  Rated withstand current (peak)

kA

63

 50

63

  50

13

Mechanism life

Times

3000

10000

 3000

14

Dimension ( per unit)

mm

  370x750x1345


Note: For short circuit breaking and peak current is based on Fuse plus combination of F module.


++++General:
RMR-36/40.5kV is completely insulated SF6 Gas insulated Switchgear.
This product is in conformity with the standards the GB/IEC standard and the design of a high safety combined switch cabinets.
The system of RMR-36/40.5kV of combined switch cabinets can be divided into three kinds of unit cabinet:
++++ 3 position cable connection unit (Cable switch unit), additional live shows and configuration of surge arresters and grounding fault component. Code C
++++3 position switch and fuse tripping system and earthing switch interlock system fuse combined electrical unit (Fuse combination unit), additional live shows and configuration of surge arresters and grounding fault component. Code F
++++3 position switch and vacuum circuit breaker combined appliances unit (Vacuum circuit breaker unit), additional current transformer, live shows and configuration of surge arresters and grounding fault component. Code V
The combination of the current transformer and the microcomputer protection to constitute the basic circuit protection function.
Microcomputer protection using passive protection and CT electric no need of additional PT power supply Reference standard:
----IEC62271-200 ----IEC62271-100 ----GB3804-2004 ----GB3906-1991 ----GB16926-1997 ----GB/T11022-1999
Remark:
Fuse combined electrical follow IEC 60420
VCB unit according to IEC 62271-100/GB1984-2003
++++Service environment
a) Air temperature: ±40℃; Daily average ≤25°C
b)Altitude above sea level: Maximum installation altitude: 4000m
c)Wind: less than 35m
d)Earthquake intensity: no more than 8 degrees;
++++ Main technical specifications

No

Item

Unit

Data

1

Rated voltage

kV

24/36

2

Power Frequency withstand voltage

Dry

60/70/80/95

Wet

Lightning Impulse withstand Voltage

 (peak value)

125/150/170/185/200

3

Rated Current

A

630/1250/2500

4

Rated short circuit breaking current (peak)

kA

20/25(V) 31.5(F)

5

Rated closed-loop breaking current

A

630/1250(C)

6

Rated cable charging interrupting current

A

50(C)

7

Rated line cable charging interrupting current

A

10(C)

 

Rated off circuit transformer breaking current

A

16

8

Rated making current (peak)

kA

50(63/80)/2.5(main switch/grounding)

9

Rated  withstand current (peak)

10

Rated short time withstand current

16/20/25/31.5

11

Rated short time withstand time

S

3/4

12

Mechanical life

times

C/F(2000)V(10,000)

13

Main busbar

A

630/1250/2000/2500


More details pls consult with us!


++++General:
SM66-24 unit type SF6 RMU with SF6 load switch as main switch, for whole cabinet is suitable for electric distribution automation and compact also expandable metal close switchgear. It characters in its simple structure, flexible operation, reliable interlocking and convenient installation etc., which can provide the satisfactory technical projects both for different application occasions and users. With the adoption of sensor technology and the protection relay up to date, plus the advanced technology and flexible assembly project, SM66-12/24 unit type SF6 RMU can completely meet the requirement of continuously variable market. It can take self-produced RLS-12/24 load break switch; also according to the demand of users can be assembled with the internationally top-ranking RCB series vacuum circuit breaker
with permanent magnetic mechanism made by AREVA or HD4 type SF6 circuit breaker made by AREVA or HD4 type SF6 circuit breaker made by ABB or with our VSC-12/24 type vacuum circuit breaker with permanent magnetic mechanism. Operational methods for the main switch inside ring main unit can be either manual or electric power driven. And It can meet the requirement of "Four Controls" when matched with FTU and RTU.
++++Service environment:
a) Air temperature: Maximum temperature: +40℃; Minimum temperature:-5℃
b) Humidity: Monthly average humidity 95%; Daily average humidity 90%
. c) Altitude above sea level: Maximum installation altitude: 2000m
d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
e) No frequent violent shake
++++Units for all functions:
1. Incoming unit with switch disconnector (Load break switch) schemas With other extra components optional
2. Outgoing unit with Fuse-switch protection schemas With other extra components optional
3.Incoming/outgoing circuit breaker protection schemas With other extra components optional
4. MV metering schemas
With other extra components optional
5. Casings (Bus bar Panel) schemas
With other extra components optional
++++Main technical specifications:

 No.

 Item

 Unit

   Parameter

 1

  Rated voltage

 kV

 24

 2

 Rated frequency

 Hz

  50/60

 3

  Rated current

 A

 630/800

  4

  1min Power frequency withstand voltage

 kV

 60

 5

 Lightning impulse withstand voltage

  kV

 125/150

  6

 Rated short circuit breaking current (peak)

 kA

  63

 7

 Rated active load/close circuit breaking current

  A

 50

 8

 Rated transferring current

 A

  1200

 9

 Rated short circuit making current (peak)

 kA

 63

  10

Rated cable(line) charging breaking current

 A

 50 and 10

11

Cable charge breaking current in earthing fault

A

20

12

Rated withstand current (peak)

kA

63

 13

 Short time withstand current (2s)

 kA

25

14

Mechanism life

times

 2000


Note: For short circuit breaking and peak current is based on Fuse plus combination.