Specifications

Meter Relays
Mechanical Indicators
79
Specifications
Size (width ✕ height) mm
Model name
Operation principle
Accuracy (grade)
Scale length (mm)
Weight (kg)
Rectangular indicators Wide-angle indicators
Upper/Lower-limit setting
Maximum scale value
Indicator rating
1mA
10mA
20mA
1, 3, 5A
1~7500A
Delivery period





Direct
Combined with shunt
Upper-limit setting Upper/Lower-limit setting Upper-limit setting
100✕83 110✕110
YM-210MRNDA YM-210MRHNDA LM-11MRNDA LM-11MRHNDA
Movable coil
2.5
72
0.7
Movable coil
1.5
175
1.8
Internal resistance (Ω) or consumption current
70Ω
3Ω
2.5Ω
60mV(10mA)
60mV(10mA)
650Ω
7Ω
10Ω
100mV(10mA)
100mV(10mA)
Standard
product
Immediate delivery
 Quasi-standard
product
Within 20 days
Special
product
21 to 60 days
Symbol
Reference delivery period
Delivery period classification
DC ammeters
LM-11MRNDAYM-210MRNDA
 Table of maximum allowable values of lead wires for DC
ammeter relay combined with shunt
Model name
YM-210MRNDA
YM-210MRHNDA
LM-11MRNDA
LM-11MRHNDA
Indicator rating (mV)
60 or more, less than 75
75 or more, less than 100
100 or more, less than 150
150 or more
100 or more, less than 150
150 or more
Maximum allowable resistance value of lead wire (Ω)
0.73
1.16
1.88
3.33
1.50
2.59
DC ammeter relay combined with shunt
a
b
c
HIGH
M
100V 200V
a
b
c
LOW
Auxiliary power supply
100-110V
or
200-220V
Load
+–
±
+
–
(Shunt)
Fig. 1 YM-210MRNDA and LM-11MRNDA
Connection diagram
Lead wires for shunt connection
Lead wires for connecting an indicator with a shunt can be manufactured if specified.
YM-210MRNDA
YM-210MRNDA
60mV 0-200A
0-5A
B
B
The items in must be specified.
Indicator combined with shunt
Model name
Model name
Indicator rating
Scale
Scale
Cover type
Cover type
Shunt rating +
required/not required
Special specifications
Thickness and length of lead
wire + required/not-required
Direct indicators
Number of
units
Number of
units
2
2
Double scale, colored
lines, etc.
Special specifications
Double scale, colored
lines, etc.
SHT 200A 60mV, not
required
Lead wire 2mm
2
3m, not
required
YM-210MRHNDA and LM-11MRHNDA do not have LOW terminals.
Note 1.
In the case of combined use with a shunt, please refer to the table below and specify the lead wire thickness and
one-way length or the round trip resistance.
Remarks
(1) In the case of a bidirectional deflection indicator, determine the specifications according to the following.
• In the case of a direct rating model, manufacture is possible if the larger of the right and left scales is 5A or less.
• In the case where a shunt is externally attached, determine the scale so that the sum of the absolute values of
the indicator ratings is 60mV or more for YM-210MRN and 100mV or more for LM-11MRN.
Example: In the case of a shunt rating of 500A and 60mV
Ammeter scale -500~0~+500A
Ammeter rating -60~0~+60mV (sum of absolute values=120mV≥60mV)
(2) Please make sure to read the “Safety Precautions” (pp.5-8) and the “Selection Precautions” (p.9) to assist in
selecting the model and use specifications suited to the application.
Remarks
(1) Refer to “DC ammeter combined with shunt” on p.44 regarding the round trip
resistance according to the lead wire thickness and one-way length.
two 2mm
2
- 2m (one-way) 1500V heat-resistant vinyl wires (blue) for electric equipment.
The standard is:
Remarks
(1) The customer is requested to prepare wires besides those of 2mm
2
cross-sectional area.
Ordering method