Frequency counter D340 (D 340, D-340)
Frequency counter D340 - shield ferrodinamichesky direct-reading instrument for measuring the frequency of the alternating current.
Accuracy class - 1.0.
Measurement range - 45Hz - 55Hz.
Rated voltage - 100V, 127V, 220V, 380V.
Power consumption - 12W.
Dimensions 160 × 160 × 82mm.
Frequency D340 used for installation of power plants, substations and other types of stationary electric power plants.
Structural features D340
Torque generated by reacting the movable part in the current frame with the flux coil fixed and depends on the amplitude and phase of the currents in the coil and the fixed frame.
The fixed coil, which has frequency D340, is included in a resonant circuit tuned to a frequency corresponding to the average value of the readings. At the coincidence of the measured frequency to the resonance torque is zero. Calming the movable part of the frequency D340 - magnetic induction. The elements of the resonant circuit may be incorporated into a separate device such as P340.
Positioning and mounting D340
Frequency D340 is designed for flush mounting on vertical or horizontal panels (panels) made as of the magnetic and non-magnetic materials.
When installing the D340 should adhere to the following rules:
- Installation of equipment should be made carefully, without distortions;
- Fastening frequency counters and voltmeters D340 D340 panel must be rigid and not create additional stress;
- Frequency counters D340 mounting should be located away from sources of strong magnetic fields with a strength greater than 0.4 kA / m;
- Appliances intended for inclusion in the network with a voltage of more than 650V, mounted on insulators of reach to touch.
The manufacturer guarantees that the device specification requirements under normal use, storage, transportation and installation. Cymometer D340 compliant, ensuring the safety of life, health, consumer and environmental protection.