Introduction
NOJA Power’s VISI-SWITCH
®
is a solid dielectric load
break switch designed for manual isolation in a three-
phase electricity distribution grid feeder. Unique to
this switch, is the viewing window embedded in the
bushings, allowing an operator to see the actual point
of isolation. Through the viewing window, an operator
can see the isolator electrical contacts when the switch
is closed and visible isolation when the switch is open,
guaranteeing that the circuit is isolated.
It also features vacuum interrupters with solid dielectric
insulation and a unique and patent-pending drive
mechanism ensuring safe operational sequence.
NOJA Power’s VISI-SWITCH
®
OLB15-16-800 has a
rated maximum voltage of 12 kV, a rated continuous
current of 800 A and a short time current withstand of
16 kA (for 3 seconds).
Each phase is comprised of a vacuum interrupter with
solid dielectric insulation and a built-in isolator to provide
physical isolation in accordance with the requirements
of insulation coordination standards IEC 60071-1
Insulation co-ordination – Part 1: Definition, Principles
and Rules and IEC 60071-2 Insulation co-ordination –
Part 2: Application Guide.
The VISI-SWITCH
®
features a unique and patent-
pending drive mechanism which connects the vacuum
interrupters to the isolators and guarantees both parts
of the switch will open once operation is initiated. The
sequencing of the complete switching operation is
VISI-SWITCH
®
WITH SURGE
ARRESTORS
VISI-SWITCH
®
SIDE VIEW
VISI-SWITCH
®
FRONT VIEW
INTRODUCTION
1.
Product Guide
VISI-SWITCH
®
