Duncan Instruments Canada Ltd
Duncan Instruments Canada Ltd.
Electronic Measurement Solutions since 1968
ISO 9001
 
1-877-742-4448
Products

 

Ferrodynamic wattmeters LW-1Series

The LW-1 ferrodynamic wattmeter抯 are designed for the measurement of power in DC and AC single-phase circuits at frequencies ranking between 15 and 200 Hz and power in three-phase three-wire networks with artificial neutral point measuring system.

Type LW-1 wattmeter抯 find wide application in industrial and scientific laboratories, didactic work-rooms, testing stations and wherever high accuracy of power measurement is required.

Ground Resistance Tester

Features

  • The LW-1 instruments are easy and safe in use;
  • Type LW-1 meters have a ferrodynamic measuring system;
  • The current and voltage ranges are changed by means of the rotary selector switch;
  • Appropriate construction of meter and thorough workmanship assure reliability of operation and high accuracy of measurement during a long service life.
  • The pointer, narrowed at the end and the mirror scale enable readings to be taken accurately and free of parallax error;

 


Technical Specification
Rated currents
Rated voltages
Measuring range
Current circuit resistance mOhm
Current circuit inductance 礖
0.5A
1A
100-200V
400V
50-100W
200-400W
3200
820
6300
1550
1A
2A
100-200V
400V
100-200W
400-800W
820
220
1550
400
2.5A
5A
100-200V
400V
250-500W
1000-2000W
170
48
250
63
5A
10A
100-200V
400V
0.5-1KW
2-4KW
50
14
63
16
10A
20A
100-200V
400V
1-2KW
4-8KW
18
5.2
16.5
4.1
Accuracy class
1MOhm min.
Number of desing versions
5
Scale length
110 mm
Nominal power factor
cos ø 0..1
Voltage range
(0,8 ...1... 1,5)Un
Current range
(011,3)
Frequency range
15 ...50...200 Hz
Insulation test voltage
2KV
Overall dimensions
155 x 210 x 85 mm
Mass. approx
1,5 kg
Ambient temperature
13...23... 33癈
Ambient air relative humidity
25..40...75...80%
Operating position of instrument
horizontal


October 21, 2010.
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