Integrated Cable Test Facility
Safety Provisions
 WARNING |
|---|
|
HAZARD OF INCORRECT OPERATION
Failure to follow these instructions can result in death, serious injury, or equipment
damage.
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Cable Testing
Cable testing involves injecting a test voltage through a cable between two Ringmaster AirSeT units A and B.
Cable Testing
The main purposes of cable testing via voltage injection are:
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Ensuring the integrity of the cable between substation before energizing it.
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To locate a fault on a cable (or on a phase if more than 1 cable per phase).
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To diagnose and localize potential problems on a cable.
| WARNING |
|---|
|
HAZARD OF INCORRECT OPERATION
Ensure the earth collector or one of the voltage injection
fingers are not damaged, if damaged (bended, sheath damaged, or other),
stop operations and contact the field service representatives.
Failure to follow these instructions can result in death, serious injury, or equipment
damage.
|
The integrated cable test facility:
-
Helps eliminate the need to open the connection compartment to access the cable connections.
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Provides a full interlock with the earthing switch.
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Facilitates the cable connection with specific injection fingers.
The integrated cable test facility is located at the front of the Ringmaster AirSeT unit.
Cable Test Facility
|
1 |
Withdrawable earth collector |
4 |
Fixed contacts |
|
2 |
Injection fingers |
5 |
Earth finger |
|
3 |
Earth collector locking knob |
6 |
Injection point |
Maximum Injection Voltage for Test Signal
| NOTICE |
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|
HAZARD OF ELECTRICAL BREAKDOWN
When testing the cable of the Ringmaster AirSeT, limit the voltage and duration as shown in the below Table
– Voltage Test of Ringmaster AirSeT.
Failure to follow these instructions can result in equipment damage.
|
Voltage Test of Ringmaster AirSeT
|
Test Voltage |
Voltage per min |
|---|---|
|
DC (positive/negative) |
32 kV/15 min |
|
VLF (Very Low Frequency) |
22 kV/60 min |