Power Supply; Reception, Handling & Storage; Installation; Acceptance Tests - GE DTR GEK-106305A Instruction Manual

Digital tap changer controller

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6.2 RECEPTION, HANDLING & STORAGE

DTR modules are supplied to the customer in a special package, which adequately protects it during transportation,

as long as this is performed in normal conditions. Immediately after receiving the equipment, the customer should

check whether it shows any signs of transportation damage. If it is apparent that the equipment has been damaged

by inappropriate handling, it must be immediately advised in writing to the carrier, and the damage must be reported

to the manufacturer

For unpacking the relay, normal care should be taken in order not to lose the screws, documents and other auxiliary

elements also supplied in the box.

If it is not intended to install the relay immediately, it is recommended to store it in its original package, and keep it in

a dry, dust free and metal particles free place.

DTR units must be mounted in vertical surface which allows access to the front and rear sides of the equipment. It is

not necessary to have access to the lateral surfaces of the equipment mounted. Dimensions and panel drilling for

boxes of a 19'' rack 4 units high in shown in Figures 2 and 4.

In this section we will explain the different tests that allow verification of the complete functionality of a DTR protection

equipment. For a given DTR equipment, only those tests corresponding to the functions included in it should be

carried out, according to the table of application variables in the models selection guide.

• Unpack the relay and make sure that there are no broken parts and that there are no signs that the relay has been

damaged during transportation

• Make sure that all the screws are well tightened and the terminals blocks are not damaged.

• Make sure that the device type indicated on the front plate matches with the order data.

During the testing, the A12 terminal should be to connected to ground for security reasons. It must be verified that

connection to ground exists in the terminal C12.

Apply gradually 2500 volts between all the terminals of a group, connected among themselves, and the box,

during a second.

7.3 POWER SUPPLY

6. HARDWARE DESCRIPTION

DTR Digital Tap Changer Controller

GE—106305A

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