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DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR
ARC FLASH
After installation of cables and connectors, the
minimum clearance prescribed by the applicable
codes and standards for the respective voltage class
must be maintained from energized parts to all case
parts.
Failure to install cables and connectors as per all
applicable codes and standards and the attached
guidelines will result in serious personal injury or
death and property damage.
Grounding
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR
ARC FLASH
Failure to properly ground the transformer as per all
applicable codes and standards will result in serious
personal injury or death.
Altering the Transformer
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR
ARC FLASH
Misapplication or misuse of this equipment may
result in serious personal injury or death and
property damage.
Installation, Operation, and Maintenance Guide - Encapsulated Low Voltage Transformer
The following table may be used as a guideline for
minimum clearances at altitudes not exceeding 1000 m (3300
ft.). Above 1000 m (3300 ft.) please consult factory.
Transformer
Voltage Class
Clearance (mm)
1.2 KV
2.5 KV
5.0 KV
8.7 KV
15 KV
18 KV
25 KV
34.5 KV
Note: "Some specific component parts of a transformer may require
clearances different than those indicated above. For those exceptions,
you should comply with the instructions provided in the assembly
drawings or installation procedure."
All core and coil assemblies are solidly grounded to the
enclosure internally and accessible to ensure that all conductive
metal parts have the same potential.
To ensure the safety in operation, the transformer must
be properly grounded before energizing. Most transformers
have a main ground location identified accordingly. If a main
ground location is not provided, it is the responsibility of the
installing contractor to make and verify the necessary ground
connections.
This grounding should be in accordance with all national
and local electrical codes and standards.
The application of this equipment is the responsibility of the
customer or their agent. Misapplication or misuse may result in
serious personal injury or death and/or property damage.
Any modifications to this equipment need to be compliant with
all applicable codes and standards, and certain modifications
may jeopardize Warranty terms. It is the responsibility of the
individual(s) performing any equipment modifications to (i)
ensure that the applicable performance and safety requirements
are still met by the modified equipment; and, (ii) confirm that
proposed modifications will not void the Manufacturer's
Warranty.
Minimum
Minimum
Clearance (in.)
25
1
51
2
102
4
135
5.3
203
8
254
10
305
12
406
16
8
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