11kv Indoor Sf6 Gas Insulated Ring Main Unit Switchgear

China 11kv Indoor Sf6 Gas Insulated Ring Main Unit Switchgear, Find details about China Ring Main Unit, Gas Ring Main Unit from 11kv Indoor Sf6 Gas Insulated Ring Main Unit Switchgear

Basic Info.

Model NO.

RMR

Trademark

Rockwill

Transport Package

Carton

Specification

IEC, GB

Origin

China

HS Code

8535210000

Model NO.

RMR

Trademark

Rockwill

Transport Package

Carton

Specification

IEC, GB

Origin

China

HS Code

8535210000

Product Desciption

Product Description

Safering SF6 insulated Ring Main Unit

Gas Insulated Ring Main Unit

iSafeRing is a SF6 insulated ring main unit for the secondary distribution network. iSafeRing can be supplied in 10 different configurations suitable for most switching applications in 12/24/36 kV distribution networks. As an option, iSafeRing can be delivered as extendable ring main unit.

Together, iSafeRing represent a complete solution for 12/24/36 kV secondary distribution networks.

C - Cable switch module	F - Cable switch module	V - Cable switch module
D - Direct cable connection module	De - Direct cable connection module with earthing switch	M - Metering module

Modularity and external busbar

All modules except the metering module and circuit-breaker module are only 325 mm wide.

Transformer protection

iSafering offers a choice between a switch fuse combination and circuit breaker with relay for transformer protection. The switch fuse combination offers optimal protection against short-circuits, while the circuit breaker with relay option offers better protection against low overcurrents. Circuit breaker with relay is always recommended for larger transformers.

Normal operation conditions

The rated characteristics of the switchgear are valid under the following ambient conditions:
minimum ambient temperature: - 25 °C
maximum ambient temperature: + 40 °C
For different temperature ranges, please contact your UNISUN sales representative.

Standards

iSafeRing/iSafePlus is tested according to following
IEC-standards:
IEC 62271-1/IEC 62271-100/IEC 62271-102/IEC 62271-103/IEC 62271-105/IEC 62271-200/IEC 60529:

SF6 insulated Ring Main Unit Outer assembly

11kv Indoor Sf6 Gas Insulated Ring Main Unit Switchgear

iSafering outer assembly

Upper front cover
1. Manometer
2. Nameplate module
3. Short circuit indicator
4. Capacitive voltage indication
5. Load break / earthing switch position indicator
6. Push buttons close/open operation
7. Charged spring indicator
8. Self-powered protection relay
9. Vacuum circuit-breaker position
10. Operation shaft
11. Padlock device
Lower front cover
12. Nameplate switchgear
13. Fuse blown indicator
14. Disconnector / earthing switch position indicator
15. Capacitive voltage indication
Cable compartment cover
16. Cable compartment cover standard
17. Cable compartment cover with inspection window
18. Support bar (removable)
Side cover
19. Lifting lug
20. Operating handle (standard on right hand side)

Inner assembly

1. Mechanism compartment
2. SF6 gas tank
3. Cable compartment
4. Pressure relief area

Technical data

SafeRing		C-module		F-module		V-module
SafeRing		Switch disconnector	Earthing switch	Switch-fuse disconnector	Downstream earthing switch	Vacuum circuit-breaker	Earthing switch/ disconnector
Rated voltage	Kv	12/17,5/24	12/17,5/24	12/17,5/24	12/17,5/24	12/17,5/24	12/17,5/24
Rated frequency 5)	Hz	50/50/50	50/50/50	50/50/50	50/50/50	50/50/50	50/50/50
Power frequency withstand voltage	kV	28/38/50	28/38/50	28/38/50	28/38/50	28/38/50	28/38/50
Lightning impulse withstand voltage	kV	95/95/125	95/95/125	95/95/125	95/95/125	95/95/125	95/95/125
Rated normal current	A	630/630/630		200¹⁾		200/200/200
Breaking capacities:
active load	A	630/630/630
closed loop	A	650/650/650
off load cable charging	A	140/140/140
off load transformer	A			20/20/20
earth-fault	A	205/160/160
earth-fault cable charging	A	117/91/91
short-circuit breaking current	kV			see²⁾		16/16/16
Making capacity	kV	52,5/40/40	52,5/40/40	see²⁾	12,5/12,5/12,5	40/40/40	40/40/40
Short time current 3 sec. 3)	kV	21/16/16	21/16/16			16/16/16	16/16/16