power distribution
Double Break
Rotary Isolator
Type tested design
Manual or motor operated
System voltage 33kV/66kV
Australian design and manufacture
Rated short time withstand current 31.5kA (3 seconds)
Double Break Ro
General arrangement
The Ampcontrol double break rotary isolator has
been type tested by a NATA approved testing
authority and complies with Australian Standard AS
1306 - 1985 and IEC 60129 amendments parts
I and II. Options exist to supply the unit partially
assembled or in a basic flat pack assembly.
Basic unit
The basic triple pole rotary isolator can be
supplied with two 2900mm high galvanised steel
support columns and is padlockable in the on
and off positions. All isolators are supplied with a
manual operating handle and linkages. Operating
shaft lengths can be customised to suit individual
requirements. Mounting options include utilising the
support columns, pole mount or assembly onto a
switchroom roof.
Features/Benefits:
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Australian design and manufacture to suit local conditions
Engineering support readily available - application assistance
Low maintenance - cost effective
Type tested design complies to Australian and IEC Standards - reliability assured
Positive 2:1 switch movement provides ease of operation
Motor operated open/closing mechanism option available (type tested)
Part assembled option simplifies installation
Load and/or line side earth switch option available
Integrated mechanical interlocking ensures failsafe operation
Security key option enhances operator safety
Applications:
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Feeder isolators
Switchyards
Zone substations
Traction installations
Relocatable substations
Mobile mining substations
POWER THROUG
otary Isolator
Simplified installation
The isolator is available in both flat pack and part
assembled formats ready for installation. The
part assembled option can reduce the amount of
time required on-site and simplifies the switchgear
installation.
The ground level erection process requires only four
stages - stand the two support columns, position the
base frame on the columns, mount operating handles
and fit interconnecting rods. Final inspection and
operational checks follow.
Earth switches
Earth switches can be fitted for load and/or line side
operation and are provided with a mechanical interlock
to prevent simultaneous closing onto the isolator. All
standard earth switches are supplied with a manual
operating handle and linkages. Earth switch auxiliary
contacts are also available.
Flicker blades
Stainless steel flicker blades can be supplied for
installations requiring the breaking of low currents
associated with system stored energy, such as line
charging currents in cables or overhead lines.
Rotary isolator auxiliary contacts
To allow status signalling for manually operated
isolators a separate position indicating switch can be
provided in an IP66 metal enclosure.
Motor operator
As an alternative to manual operation, a type
tested design DC motor drive assembly can
be fitted to the isolator in lieu of the operating
handle. The motor control assembly is fully
self contained and supplied in an IP66 metal
enclosure.
Solenoid interlock
The operating handle can be fitted with an
electrical solenoid interlock arrangement
complete with auxiliary contacts. A
mechanical key style interlock kit can also
be implemented
GH INNOVATION
Isolator and earth switch utilise
multi-contact parallel arrangement
Manual operating handle
Earth switch
operating mechanism
Technical Ratings
Description
System highest primary voltage
36kV rms
72.5kV rms
System nomial primary voltage
33kV
66kV
Rated short-time withstand current for 3 seconds
31.5kA rms
31.5kA rms
Phases per unit
3
3
Impulse - flashover co-ordinated
200kVp
325kVp
Rated frequency
50Hz
50Hz
Rated normal current
1250-2000A rms
1250-2000A rms
Rated peak withstand current
78.8kA
78.8kA
Class
Outdoor
Outdoor
Lightning impulse, full wave, either polarity
-- Phase to earth and between poles
-- Across open disconnector
200kVp
230kVp
325kVp
375kVp
Power frequency (1 minute)
-- Phase to earth (dry)
-- Across open disconnector (dry)
-- Phase to earth (wet)
-- Across open disconnector (wet)
70kV
80kV
60kV
80kV
140kV
160kV
140kV
160kV
Accessories
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ROT-02/09
Value
Galvanised support columns
Security key interlock adaptor kit
Earth switch auxiliary contacts
Earth switch position indication flags
Flicker blades
Rotary isolator auxiliary contacts
Motor operator 110VDC Solenoid interlock kits
AMPCONTROL POWER
Ampcontrol SWG ABN 78 001 737 533
6 Martin Drive
Tomago NSW 2322
Phone:(02) 4964 8288
Fax: (02) 4964 8555
power@ampcontrolgroup.com
www.ampcontrolgroup.com
rms
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Test report No. 101187
IEC 60129: 1984 with amendments No's
1 and 2 (Mechanical endurance: motor
operator/disconnector/earth switch - 1000
operations).
AS1306 - 1985High voltage AC switchgear
and control gear - disconnectors (isolators)
and earthing switches (Mechanical endurance:
motor operator/disconnector/earth switch 1000 operations).
AS2395 - 1980Terminals for switchgear
assemblies for alternating voltages above 1kV.
AS2650 - 1986High voltage AC switchgear
and control gear - common requirements.