Associated Research HYAMP II 5030DT, Руководство по эксплуатации и обслуживанию

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INTRODUCTION
5
GLOSSARY OF TERMS
(as used in this manual)
Alternating Current, AC:
Current which reverses direction on a regular basis, commonly in the
U.S.A. 60 times per second, in other countries 50 times per second.
Conductive:
Having a volume resistivity of no more than 103 ohm-cm or a surface resistivity of no
more than 105 ohms per square.
Conductor:
A solid or liquid material which has the ability to let current pass through it, and which
has a volume resistivity of no more than 103 ohm-cm.
Current:
The movement of electrons through a conductor. Current is measured in amperes,
milliamperes, microamperes, nanoamperes, or picoamperes. Symbol = I
Dielectric:
An insulating material which is positioned between two conductive materials in such a way
that a charge or voltage may appear across the two conductive materials.
Direct Current, DC:
Current which flows in one direction only. The source of direct current is said
to be polarized and has one terminal which is always at a higher potential than the other.
Hipot Tester:
Common term for dielectric-withstand test equipment.
Hypot®:
Registered trademark of Associated Research, Inc., for its dielectric-withstand test equipment.
Insulation:
Gas, liquid or solid material which has a volume resistivity of at least 1012 ohm-cm and is
used for the purpose of resisting current flow between conductors.
Resistance:
That property of a substance which impedes current and results in the dissipation of power
in the form of heat. The practical unit of resistance is the ohm. Symbol = R
Trip Point:
The minimum resistance required to cause an indication of unacceptable performance
during a ground bond test.
Voltage:
Electrical pressure, the force which causes current through an electrical conductor.
Symbol = V