ABB SafePlus User Manual

5
SafeRing 3-way unit CCV
2. GENERAL DESCRIPTION
SafeRing is a SF
6
-insulated ring main unit and SafePlus is a
SF
6
-insulated compact switchgear for applications in medium
voltage distribution networks. SafeRing and SafePlus offer a
sealed stainless steel tank which contains all the live compo-
nents and switching functions. The transformer is protected
either by a switch fuse combination or a vacuum circuit-
breaker.
The units are delivered from the factory ready for installation.
SafeRing can be supplied as a 2, 3 or 4-way unit in standard
configurations with additional equipment according to custo-
mer specification.
Available configurations:
DeF, CCF, CCC, CCCF, CCFF, DeV, CCV, CCCC, CCCV,
CCVV.
SafePlus has a unique flexibility due to its extendibility and the
possible combination of fully modular and semi-modular confi-
gurations, with a maximum of 5 modules in one SF
6
-tank.
The units are delivered from the factory ready for installation.
Routine tests are carried out on all units/ modules before
dispatch.
No special tools are required for installing the equipment.
Available modules are :
C - Cable switch
F - Switch fuse disconnector
D - Direct cable connection
De - Direct cable connection with earthing
V - Vacuum circuit-breaker
Sl - Busbar sectionalizer, load break switch
Busrise needed when SL on right side of SF6 tank
Sv - Busbar sectionalizer, vacuum circuit-breaker
Sv always together with busrise (total width=650 mm)
Be - Busbar earthing
M - Metering cubicle
V20, V25 - Vacuum circuit-breaker 20/25kA
Sv20, Sv25 - Busbar sectionalizer, vacuum circuit-breaker
20/25kA.
SafeRing / SafePlus with switch fuse combination in
compliance with IEC 62271-105.
With this unit the transformer will be protected by current-
limiting HV fuses in combination with a load break switch.
The load break switch is equipped with a stored spring energy
mechanism which can be tripped by the fuse striker pin.
SafeRing / SafePlus with vacuum circuit-breaker in
compliance with IEC62271-100
With this unit the transformer will be protected by a vacuum
circuit-breaker combined with relays and current transformers.
The standard relays are based on digital technology and do
not require an external power supply.
Further information can be found in the product catalogue for
SafeRing and SafePlus, 1VDD006104 GB.

ABB SafePlus Specifications

General

Rated voltage	Up to 24 kV
Rated current	Up to 1250 A
Insulation medium	SF6 gas
Rated Lightning Impulse Withstand Voltage	125 kV
Standards	IEC 62271-200
Dimensions	Varies by configuration
Weight	Varies by configuration
Short-time withstand current	Up to 25 kA