Description
Call for Price: (800)-766-1212
Variant Cut Sheets
VIZ-12 18000/18000Y 9628A33G01 | VIZ-12 21000/21000Y 9628A33G02 | VIZ-12 24000/24000Y 9628A33G03
VIZ-12G Switchgear 12000/20780GY 7881A72G01 | VIZ-12G Switchgear 14400/24940GY 7881A72G02
VIZ-12G Fused 12000/20780GY 7881A64G01 | VIZ-12G Fused 14400/24940GY 7881A64G02
Product features
− 25 kV, indoor
− 125 kV BIL, 60 Hertz
− Primary volts: 7200 - 27600
Application
The VIZ-12 and VIZ-12G indoor voltage transformers are designed
for service in metalclad switchgear and are used for metering,
relaying, or control power. Both units are available in single, double,
and tapped secondary designs with two accuracy and thermal
rating options.
Construction features
The primary and secondary coils are wound using special winding
and shielding techniques for improved voltage stress distribution.
The coils are designed to withstand continuous operation at either
1.1 or 1.25 times the line-to-line voltage level for Z burden units and
the line-to-ground voltage level for Y burden units. For some line-to
ground voltage units, a short-time withstand voltage of 1.9 is
available upon request.
Each coil is insulated with mylar film to provide a high dielectric
strength between layers. The coils and core are combined to create
a complete winding structure that is assembled to a support frame.
The entire assembly is vacuum cast in polyurethane for added
insulation and protection.
Fuse classifications
These units are available in three fuse classifications: mounted
fuse with hardware, unfused with hardware, or unfused without
hardware. Optional fuse kits are offered to convert unfused
styles to fused styles. A fuse kit is available for the VIZ-12 (line
to-line). Fuses are to be installed remotely, not on top of the
transformer.
Consult your ABB sales representative concerning overvoltage
conditions for designs above the standard rated voltage factor
of 1.25.
Baseplate
The baseplate is constructed of corrosion-resistant aluminum and is
secured to the encapsulated base support.
Mounting
The VIZ-12 and VIZ-12G can be mounted in upright or cantilever
positions.
Test reports
Test reports are stored electronically and can be e-mailed in
various formats at the time of shipment.
Standards
This unit can be tested to all applicable IEEE, CSA, or IEC
standards as requested.