87 V/AN
Service Manual
Electrical Symbols
Electrical symbols used on the Meter and in this manual are explained in Table 1.
B
F
X
W
M
R
t
CAT III
s
4
Table 1. Electrical Symbols
AC (Alternating Current)
DC (Direct Current)
Hazardous voltage.
Risk of Danger. Important information.
See Manual.
Battery
Continuity test or continuity beeper tone.
Underwriters Laboratories
IEC overvoltage category III
CAT III equipment is designed to protect
against transients in equipment in fixed-
equipment installations, such as
distribution panels, feeders and short
branch circuits, and lighting systems in
large buildings.
Inspected and licensed by TÜV Product Services.
J
Earth ground
I
Fuse
Conforms to European Union
P
directives
Conforms to relevant Canadian
$
Standards Association directives
T
Double insulated
E
Capacitance
G
Diode
IEC overvoltage category IV
CAT IV equipment is designed to
protect against transients from the
CAT IV
primary supply level, such as an
electricity meter or an overhead or
underground utility service.