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33kv Indoor Type High Voltage Sf6 Gas Insulated Switchgear Ring Main Unit

Min.Order: 1
Product origin: Wenzhou, Zhejiang, China
Infringement complaint: complaintComplaint
US$ 1000 ~ 30000

Description
Product Description
iSafering 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 moduleF - Cable switch moduleV - Cable switch module
D - Direct cable connection moduleDe - Direct cable connection module with earthing switchM - 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



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
SafeRingC-moduleF-moduleV-module
Switch disconnectorEarthing switchSwitch-fuse disconnectorDownstream earthing switchVacuum circuit-breakerEarthing switch/ disconnector
Rated voltageKv12/17,5/2412/17,5/2412/17,5/2412/17,5/2412/17,5/2412/17,5/24
Rated frequency 5)Hz50/50/5050/50/5050/50/5050/50/5050/50/5050/50/50
Power frequency withstand voltagekV28/38/5028/38/5028/38/5028/38/5028/38/5028/38/50
Lightning impulse withstand voltagekV95/95/12595/95/12595/95/12595/95/12595/95/12595/95/125
Rated normal currentA630/630/630 2001) 200/200/200 
Breaking capacities:       
active loadA630/630/630     
closed loopA650/650/650     
off load cable chargingA140/140/140     
off load transformerA  20/20/20   
earth-faultA205/160/160     
earth-fault cable chargingA117/91/91     
short-circuit breaking currentkV  see2) 16/16/16 
Making capacitykV52,5/40/4052,5/40/40see2)12,5/12,5/12,540/40/4040/40/40
Short time current 3 sec. 3)kV21/16/1621/16/16  16/16/1616/16/16
 







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