Voltmeter EV0702 (EV 0702; EV-0702, EV0702, EB 0702, EB-0702; EV0702; EV 0702; EV-0702)
Voltmeter EV0702 - panel meter for measuring voltage in alternating current sine wave.
Accuracy class - 1.5.
The normal frequency range - 50Hz-1000Hz.
Weight - no more than 0.35 kg.
Dimensions of the voltmeter served in Figure 1. and Table 1.
Structural features EV0702
EV0702 voltmeters are available in two types:
- Magneto system with a rectifier;
- Electromagnetic system.
Voltmeter EV0702 magnetoelectric with rectifier has a meter with vnutriramochnym magnet, with bearings on the cores or banners and rectifier in the measuring circuit.
Structurally, the EV0702 devices of this type are performed with a square front panels and round or square buildings. The degree of protection IP50 housing meet or IP54, protection of current-carrying rods - IP00.
Voltmeters EV0702 electromagnetic systems measure AC current and voltage directly to the electrical circuits. Apparatus electromagnetic systems are based on the interaction of the magnetic field of the measured current (current flowing through the coil), with one or more cores made of magnetic material.
On a design EV0702 electromagnetic systems have two types of measurement mechanisms:
- A flat coil and a movable core of magnetic material;
- A circular coil with two cores within the coil.
Measuring the mechanisms of these devices have support for the cores of steel glides.
For voltmeter EV0702 final value of the measuring range, as well as a way to incorporate served in Table 2.
Voltmeter EV0702 has the following characteristics for resistance to various external influences:
- Vibration - acceleration of 5 m / s 2, the frequency of 20Hz;
- Vibration - acceleration of 15 m / s 2, the frequency of 30Hz;
- Shock - 70m / s 2, the frequency of attacks 10ud/min - 50ud/min.
EV0702 voltmeters are designed for use in the following conditions:
- The ambient air temperature - from -40 ° C to +50 ° C;
- Relative humidity - 95% (at a temperature of +35 ° C).
Positioning and mounting EV0702
EV0702 voltmeters are designed for flush mounting on vertical or horizontal panels (panels) made as of the magnetic and non-magnetic materials.
When installing the EV0702 should adhere to the following rules:
- Installation of equipment should be made carefully, without distortions;
- Fastening voltmeters EV0702 panel must be rigid and not create additional stress;
- VoltmetrEV0702 the installation 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. Voltmeter EV0702 complies with ensuring the safety of life, health, consumer and environmental protection.