Specifications

75
Mechanical Indicators
Specifications  Needle and relay contact operations
Indicator type
Model name
Operation principle
Accuracy (grade)
AC ammeters
LB-11ZRMNAA


Bimetal (Rectifying instantaneous meter)
1.5
145
50
5A, 50 and 60Hz
Output signal
Operation method
Setting range
Setting accuracy
Needle
Max. value marker needle
Instantaneous meter
Marker needle reset
Auxiliary power supply
Weight (kg)
Delivery period classification
10
5
Manual and electromagnetic reset (electromagnetic reset rating: 100-110VAC/DC ±10%)
No-voltage C contact (sustained output/built-in auxiliary relay)
Needle passing contact method (with red LED operation indicator)
25 to 100% of maximum scale value
±1.5% (with respect to scale length)
250VAC 3A, 100VDC 0.2A
250VAC 1A, 100VDC 0.15A
100-110VAC/DC ±10% consumption VA: 1VA
2.5
Relay unit
Scale
length
(mm)
Consumption
VA
Demand meter
Instantaneous meter
Indicator rating
Time interval (min)
Main indicator unit (VA)
Electromagnetic reset (VA)
Contact
capacity
Resistive load
Inductive load
10 15

Standard
product
Immediate delivery
 Quasi-standard
product
Within 20 days
Special
product
21 to 60 days
Symbol
Reference delivery period
Delivery period classification
LB-11ZRMNAA
Time intervals: 10 and 15 minutes; the 10-minute model complies with the
Fundamental Specifications for Electrical Construction of the Ministry of Land,
Infrastructure, Transport and Tourism of Japan.

These indicators are used to measure electricity demand and have a marker needle that displays
the maximum value measured, which is used to output an alarm signal.

AC ammeters can be used to measure electricity demand such as at electric power substations.

Provided with relay operation indication (LED).
AC ammeters
Driving needle
Max. value
marker needle
Setting needle
Indicator lamp
Needle state
When the driving needle is at or
below the setting needle.
When the driving needle pushes the
max. value marker needle up and
reaches the setting needle.
When input decreases and the
driving needle drops to or below the
setting needle.
State of contacts
a
b
c
a
b
c
a
b
c
Remarks
The indicator lamp (red LED) lights up when the
relay contacts a-c are ON.
M4 input terminal screw
M4 power supply terminal screw
for electromagnetic reset
M4 auxiliary
power supply
terminal screw
M4 contact output
terminal screw
90
90
Maximum marker
needle (red)
Setting needle
(yellow)
110
110
f100
Indicator lamp (LED)
Instantaneous meter needle
(black)
Driving needle (black)
Manual marker needle
reset button
Setting knob
26.3
225
17.3
15
4-M5 mounting screws
Reset
Source
a
b
c
A
C
In
p
u
t
Terminal
layout
Panel hole
opening dimensions
4-f6
45 45
45
45
f104
Outer dimensions
CT
Load
Power supply for
electromagnetic
marker needle reset
100-110VAC/DC
Switch Note 1
Note 2
Auxiliary
power supply
100-110VAC/DC
Upper-limit alarm
contact output
a b c
Input
Reset
Source
a
b
c
A C
Connection diagram
Model name
LB-11ZRMNAA
Indicator rating
5A
Time interval
10M
Scale
0-200A
CT ratio
200/5A
Cover type
B
Special specifications
Colored lines, colored
bands, etc.
The items in must be specified.
Number of
units
3
Demand Meter Relays
Mechanical
Note 1.
Note 2.
Connect if an electromagnetic marker needle
reset circuit is to be provided. Additionally, use
a switch that “opens” when released.
For low-voltage circuits, grounding of the
secondary side of the current transformer is
unnecessary.
Ordering method