A3-46
IM 34M06C11-01E
(3) Installation Considerations
- Use the FA-M3 in an Overvoltage Category II environment.
Overvoltage categories are divided into 4 categories depending on the rate of
attenuation of surge voltages induced by lightning.
Figure A3.39 shows a conceptual diagram for the overvoltage categories.
Fuse
Meter
Switch
Stage light
Lift
3 line
Socket
Heater
Transformer
above 380-
415V
220-240V/380-415V
220-240V
60V
and
below
Overvoltage
category
IV
III
II
I
Overvoltage category I : Applies to signal systems with rated voltage 60V or less.
Special equipment or components of equipment, remote communication, etc.
Overvoltage category II : Applies to station systems with rated voltage 220/230/240V.
Electrical appliances, portable equipment, etc.
Overvoltage category III: Applies to distribution systems with rated voltage 220/230/240V or 380/400/415V.
Fixed installation equipment.
Overvoltage category IV: Single-supply systems with rated voltage 380/400/415 V or more.
Lines and cable systems, etc.
FA030905.VSD
Figure A3.39 Concept of Overvoltage Categories
- Use the FA-M3 in an environment of pollution degree 2 or lower with no
condensation.
The term pollution degree represents the degree of pollution with foreign matter,
solid, liquid or gaseous, that may produce a reduction of dielectric strength or
surface resistivity in the operating environment of the equipment.
The EN61010-1 and EN61010-2-201 applies to equipment that is used in
environment of pollution degree 1 or pollution degree 2; the FA-M3 is designed for
use in an environment of pollution degree 2 with no condensation.
The definitions for the pollution degree levels are given below.
Pollution degree 1:
No pollution or only dry, non-conductive pollution occurs. The pollution
has no influence.
Pollution degree 2:
Normally only non-conductive pollution occurs. Occasionally, temporary
conductivity caused by condensation is to be expected.
Pollution degree 3:
Conductive pollution occurs, or dry, nonconductive pollution occurs that
becomes conductive due to condensation that is to be expected.
Summary of Contents for FA-M3V e-RT3 Plus
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Page 21: ...TOC A 1 IM 34M06C11 01E Hardware Manual Part A Standard Version IM 34M06C11 01E 40th Edition ...
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Page 201: ...A3 41 IM 34M06C11 01E Figure A3 37 Example of Installation Measures ...
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