NOPOWSR 5976 GB
20
ABB / PTMV
SafeRing / SafePlus
SF6 insulated ring main unit and compact switchgear
Installation and operating instructions
6.7 External busbar
SafeRing and SafePlus can be equiped with an external busbar.
See seperate instruction manual NOPOWSP 6006 GB.
6.8 ARC-SUPPRESSOR
An arc-suppressor can be fitted on all cable modules for
SafeRing and C, D, De and V-modules on SafePlus. They must
be ordered together with the unit and cannot be retrofitted.
The tripped of an arc-suppressor is indicated by means of a
electric contact in the SF
6
tank, wired to the terminal strip
behind the top front panel. (This requires aux. voltage supply.)
6.9 PRESSURE INDICATOR
SafeRing / SafePlus is always supplied with a pressure
indicator in the form of a manometer. Additionally it is possible
to fit device for an electric signal if the pressure is low. This
requires aux. voltage supply.
6.10 BASE FRAME
SafeRing/ SafePlus can be installed on a separate base frame.
The base frame is designed for cable entry from both sides or
from the back.
Two different heights 290 mm and 450 mm.
6.11 RONIS KEY INTERLOCK
SafeRing / SafePlus can be supplied with a RONIS, EL 11 AP
key interlocking system for breakers, switches and earthing
switches
6.12 TOP ENTRY BOX FOR LOW VOLTAGE
CABLES
SafeRing/SafePlus can be supplied with top entry box for low
voltage cables.
6.13 LOW VOLTAGE COMPARTMENT
SafePlus can be supplied with low voltage compartment for
protection relays, metering and other secondary equipment.
Base frame
Top entry box low voltage cables
SafePlus with
Low voltage compartment
