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Model 2042 three-phase wattmeters are electrodynamometer type wattmeters with indicators based on taut-band suspension. 

It can handle DC and frequencies from 25 to 1,000 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 to 1,000 Hz (2042 01-03)
  • Effective for Measurement of Low-power-factor Load Power and Small Power
  • Low Self-consuming Power
  • Taut-band Suspension System Eliminates Friction and Provides Strong Resistance to Shock Impact

1 - 3 of 3 Part Numbers
204201
204201
  • Rated Current, Approximate Consumed Power - 0.2/1 A, (0.66/0.56 VA)
204202
204202
  • Rated Current, Approximate Consumed Power - 1/5 A, (0.93/0.84 VA)
204203
204203
  • Rated Current, Approximate Consumed Power - 5/25 A, (1.72/1.69 VA)
1 - 3 of 3 Part Numbers

Specifications

Ambient Temperature Range

  • 0° to 40° C (32° to 104° F)

Class

  • JIS C 1102 Equivalent to Class 0.5

Current

  • 0.2 / 1 A, (0.66 / 0.56 VA) - Rated Current, Consumed Power
  • 1/5 A, (0.93/0.84 VA) - Rated Current, Consumed Power
  • 5/25 A, (1.72/1.69 VA) - Rated Current, Consumed Power

Frequency

  • 25 to 1,000 Hz - Operating Frequency
  • 50/60 Hz - Rated Frequency

Humidity

  • 25 to 80 % Relative Humidity

Insulation Resistance

  • > 10 megaohms at 500 Vdc - between Electrical Circuit & the Case
  • > 5 megaohms at 500 Vdc - between Current Circuit & Voltage Circuit

Length

  • 5.31” (135 mm) - Scale Length

Mounting Position

  • Horizontal

Operating Temperature

  • 0° to 40° C (32° to 104° F)

Principle of Operation

  • Electrodynamometer Typical

Rotation

  • 85° - Deflection Angle

Storage Temperature

  • -10° to 50° C (14° to 122° F)

Supply Voltage

  • 1,500 Vac for 5 seconds - between Electrical Circuit & Voltage Circuit
  • 120/240 V, (1.2 / 2.4 VA) - Rated Voltage, Consumed Power
  • 2,000 Vac for 5 seconds - between Electrical Circuit & the Case
  • 500 Vdc - Insulation Test
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