Specifications

71
Mechanical Indicators
Demand Meters
Appearance
Size (width ✕ height)
AC ammeters
AC voltmeters
Demand meters
Receiving indicators
With max. value needle
Demand meter relays
Wattmeters
With max. and min.
value marker needles
With max. value marker
needle and
instantaneous meter
With max. and min. value
marker needles and
instantaneous meter
With max. value marker needle
and instantaneous meter, with
alarm setting needle
1-phase, 2-wire
1-phase, 3-wire
3-phase, 3-wire
3-phase, 4-wire
80✕80
LB-8ZNAA
LB-8ZNAV
—
—
110✕110
LB-11ZNAA
LB-11ZNAV
LB-11ZNW
LB-11ZNRI
110✕110
—
—
LB-11YNW
LB-11YNRI
110✕110
LB-11ZRNAA
—
LB-11ZRNW
LB-11ZRNRI
110✕110
—
LB-11YRNAV
LB-11YRNW
LB-11YRNRI
110✕110
LB-11ZRMNAA
—
—
—
LB-11ZNAA
(AC current demand meter with
max. value marker needle)
LB-11ZRMNAA
(AC current demand meter relay)
Mechanical
Demand meters measure electricity demand and have marker needles that display the maximum and/or minimum values measured.
Telemetry measurement (remote
measurement) is possible
Receiving indicators can be
combined with various transducers
to perform remote measurement.
Terminal cover (standard
equipment)
Conducting parts are
protected to prevent electrical
shock.
Voltage
transducer
Current
transducer
Demand meter
(receiving indicator)
AV
Terminal
cover
Self-lifting
screw
Min. value marker needle (green)
Driving needle (black)
Max. value marker needle (red)
Zero adjuster (driving needle)
Manual marker needle reset button
Instantaneous meter needle (black)
Driving needle (black)
Max. value marker needle (red)
Setting needle (yellow)
Manual marker needle reset button
Setting knob
Relay operation indicator lamp (red)
Instantaneous meter needle (black)
Demand meter needles Demand meter relay needles
Demand meter and demand meter relay usage precautions
(1) Precautions concerning overload
As malfunctions may occur when an overload input is
applied continuously, select a rating that does not cause
the demand meter indicator to exceed the scale.
(2) Instantaneous meters do not have a zero adjuster (when
combined with an indicator). In addition, demand meter
relays do not have a zero adjuster for either demand
meters (driving needle) or instantaneous meters.
(3) Although the demand-meter-relay alarm setting needle
(yellow) follows the driving needle (black), when the
driving needle exceeds the preset alarm value, the alarm
setting needle returns to the original state (setting value)
when the driving needle returns to the alarm setting value
or less.
(4) The demand-meter-relay contact output turns off
regardless of the state when the auxiliary power supply is
interrupted and returns to normal operation immediately
after power is restored.
(5) When transporting a demand meter relay, make sure to
move the setting needle (yellow) to 70% or more of the
maximum scale value.
(The contact adjustment value may change or a
malfunction may occur due to vibration or shock during
transport if the needle is close to the zero point.)
(6) When the ambient temperature changes suddenly, the
zero point of the demand meter may change (1 to 2mm)
temporarily. However, this will return to normal after a few
hours.
(7) To reset electromagnetic marker needles, use a switch
that “opens” when released. In addition, set the duration of
electricity supply to the reset terminal to within five
seconds. The maximum/minimum value marker needles
can be moved to the position of the driving needle
manually or by resetting the electromagnetic marker
needle.
Mechanical