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design of the MRCT for the dissipation of induced voltage in high voltage
yards. This allows the MRCT to test in environments that other
instruments cannot. However, care must be taken when connecting the
primary test leads on large transformers to ensure that a ground loop is
not being created. If a transformer is grounded in such a way that the
both sides of the CT are grounded then a ground loop is created and the
MRCT cannot properly measure any voltage. This will result in extremely
large ratio errors. To correct this, check all grounding on the transformer
and ensure no ground loops are being created.
Contact the factory for a Repair Authorization Number and return instructions if service is required.
A Repair Authorization (RA) number will be assigned for proper handling of the unit when it arrives at
the factory. Any non-warranty repair cost incurred for the repair or replacement of parts and/or
materials shall be the responsibility of the purchaser.
Provide the factory with model number, Unit serial number, nature of the problem or service required,
return address, your name, and how to contact you should the factory need to discuss the service
request.
You may need to provide a purchase order number, cost limit, billing, and return shipping instructions. If
an estimate is requested, provide the name and contact information.
8.0 Preparation for Reshipment
Save the original shipping container for future use. The shipping container is designed to withstand
the rigors of shipping via a common commercial carrier.
Pack the equipment appropriately to prevent damage during shipment. If a reusable container is
utilized, the unit will be returned in the same shipping container if it is in suitable condition.
Add the Return Authorization Number to the address label of the shipping container for proper
identification and quicker handling.
NOTE: Ship the equipment without nonessential items such as test leads, etc. These items are not
needed by the factory to perform service.
9.0 Step by Step Testing a CT with MRCT
9.1 Test Plan Creation and Testing of CT
Refer to the safety instructions first before use of the equipment.
