Clinton DC-1, Инструкция по эксплуатации, Страница: 38 / 58

Models DC-1, -10, -20B DC Spark Testers
DC-1, -10, -20B Instruction Manual – Page 37
Fault Typing
The DC-B has the ability to distinguish between four different types of faults.
The four types of faults consist of:
Pinhole, Metal Contact, Multi Pinhole, and
Gross Barewire .
PINHOLE
A high voltage discharge where the electrode does not make physical contact
with the conductor of the product being tested.
DIRECT METAL CONTACT
A high voltage discharge where the electrode makes physical contact with the
conductor of the product being tested. There is no minimum length detectable,
however, electrode design may impact performance of metal contact detection.
MULTI PINHOLE
A series of high voltage discharges, no less than 2.5 x electrode length where
the electrode does not make physical contact with the conductor of the product
being tested.
Note: Although an accurate line speed is not required for Multi Pinhole Fault
Typing, the minimum length typed as a Multi Pinhole Fault, (2.5 x Electrode
Length) is reliant on an accurate Line speed.
GROSS BAREWIRE
A period of time, no less than 2.5 x electrode length where the electrode makes
direct metal contact to the conductor of the product being tested.
Note: Although an accurate line speed is not required for Gross Barewire Fault
Typing, the minimum length typed as a Gross Barewire Fault, (2.5 x Electrode
Length) is reliant on an accurate line speed.