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General Catalogue • Modular Devices • Technical
Digital Voltmeters, Ammeters & Hour Counters
Technical Specification
• Working voltage : 230 V~ 50/60 Hz - resolution : 1 unit
• Update of the display: 3 / seconds
• Input impedance > 1 MV for the voltmeter SM501
• Isolating resistance : 10 MV
• Maximum voltage: 660 V - number of digits : 3
Connection
• Flexible: 6mm
2
• Rigid: 10mm
2
Environment
• Working temperature: -10 to +55 °C
• Storage temperature : -40 to +70 °C
Cat ref. Product Range Consump. Accuracy
%
Ref Temp
ºC
Accuracy
Variation ºC
Maximum
Continuous
Momentary
Maximum
Frequency
Hz
Isolating
Voltage
SM501 Voltmeter 500V ≤4.5 VA ±1
23 ± 1ºC ± 0.03%
/ ºC
1.2 Un
2 Un / 5 sec. 45-65
2kV/50Hz - 1 min
SM151
SM401
Ammeter
with CT
0-150A
0-400A
≤1 VA ±1
23 ± 1ºC ± 0.03%
/ ºC
2 In
10 In / 5
sec.
45-65
2kV/50Hz - 1 min
Electrical Connection
R
Y
B
N
0
L1L2
L2L3
L3L1
SK 602
L1
L2
L3
7 9
3 5 1
8 10
4 6 2
2 4
14 12
SM 501
R
Y
B
N
0
SK 603
L1
L2
L3
2 4
14 12
SM 151/SM 401
7 9
3 5 1
8 10
4 6 2
Electrical Connection
SM501
SM151, SM401
2 4
1214
SM 501
230 V~
Circuit under
measurement
Voltmeter
2 4
1214
230 V~
/5 A
SM 151/SM 401
Hours Counter
Technical Specifications
Electrical Characteristics
• Working voltage: 230V~
Electrical Connection
• Connection in parallel on the command of the receiver
(contactor coil)
Electrical Connection
A1
A2
00005 20
EC 100