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