2041/2042Portable Wattmeters
・Electrodynamometer type
・Operating phase wire: DC, single phase, three-phase
・Operating frequency range: DC/ 25 to 1000Hz
・Double shielded construction
2041/2042 Portable Wattmeters
Model 2041 single-phase wattmeters and singlephase low-power-factor wattmeters and Model 2042 three-phase wattmeters are
electrodynamometer type wattmeters with indicators based on taut-band suspension.
They can handle DC and frequencies from 25 Hz to 1000 Hz, and provide excellent power factor
characteristics. These instruments are shielded with dual permalloy sheets as protection against external magnetic fields.
Features
Frequency range: DC, 25 Hz to 1000 Hz (2041 01~03, 2042 01~03)
Effective for measurement of low-power-factor load power and small power (2041 11~13, 21, 22)
Low self-consuming power
Taut-band suspension system eliminates friction and provides strong resistance to shock impact
Specifications
Operating principle : Electrodynamometer type
Operating position : Horizontal
Scale length : Approximately 135 mm (deflection angle: 85°)
Scale divisions : 120
Operating temperature and humidity ranges : 0 to 40°C, 25 to 80%RH
Storage temperature and humidity ranges : -10 to 50°C, 25 to 80%RH
Insulation test : Between electrical circuit and the case DC 500V/More than 10MΩ
Between current circuit and voltage circuit DC 500V/More than 5MΩ
Voltage test : Between electrical circuit and the case AC 2000 V for 5 seconds
Between current circuit and voltage circuit AC 1500 V for 5 seconds
External dimensions and weight :
2041 Approximately 260 × 180 × 136 mm, Approximately 2.8 kg
2042 Approximately 260 × 180 × 136 mm, Approximately 3.2 kg
Standard accessory : Instruction Manual (1)
| |
model
| range | Rated power factor |
Rated current
(approximate
consumed power) | Rated voltage
(approximate
consumed power) |
Single-phase wattmeter
| 2041 01 | 0.2/1 A | 120/240 V | 1.0 |
2041 02 | 1/5 A |
2041 03 | 5/25 A |
Single-phase low-power-factor
wattmeter | 2041 11 | 0.2/1 A | 120/240 V | 0.2 |
2041 12 | 1/5 A |
2041 13 | 5/25 A |
2041 21 | 0.2/1 A | 30/60 V |
2041 22 | 1/5 A |
Three-phase wattmeter
| 2042 01 | 0.2/1 A | 120/240 V | 1.0 |
2042 02 | 1/5 A |
2042 03 | 5/25 A |
Notes
1. For measurements exceeding the rated current (25 A), externally connect a current transformer 2241-2243 (page 9) to the 5 A
terminal (two required for three-phase).
2. If the rated voltage (240 V) is exceeded,externally connect an instrument voltage transformer 2261 or 2262 (page 9) (two
required for three-phase).
3. The low-power-factor wattmeter is used with Epstein test sets, as well as for measurement of low-power-factor power and small power.
4. Three-phase wattmeter total consumed power = (voltage range + current range)×2
5. Single-phase low-power factor wattmeters are not JIS-approved. And "cosø = 0.2" is printed on the top right corner of scales.
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