Ammeter E421.1 (E4211, E421 1, E421-1, E-421.1, E-4211, E-421 1, E421-1, E 4211, E 421 1, E 421-1, E421.1, E4211, E421 1, E421-1, E-421.1, E-4211 and E-421 1, E421-1, E 4211 and E 421 1, E 421-1; Є421.1; Є4211; Є421 1; Є421-1-Є 421.1; Є-4211; Є 421-1; Є421-1 Є 4211; Є 421 1; Є 421-1; e421.1; e4211; e421 1; e421-1; e-421.1; e-4211; e- 421 1; e421-1; e 4211; e 1 421; e 421-1)
Ammeter E421.1 - device designed to measure current in electrical circuits alternating current.
Accuracy class - 4.
Measuring range - 0 - 50A.
Rated current - 20A.
Frequency range - 50Hz, 180Hz - 550Hz.
Overall dimensions - 85 × 85 × 75 mm.
Weight - at least 0.31 kg.
Structural features E421.1
Ammeters E421.1 devices are available as an electromagnetic system.
Ammeters E421.1 electromagnetic systems measure AC current and voltage directly to the electrical circuits. Apparatus E421.1 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 ammeter E421.1 electromagnetic systems have two types of measurement mechanisms:
- A flat coil and a movable core of magnetic material is drawn into the gap of the planar coil when current is passed;
- A circular coil with two cores inside coil fixed and movable (one or two) that, when the measured current passing through the coil of like magnetized and repel each other, thereby the arrow, which is mounted on a moveable axis deviates.
Ammeters E421.1 designed for use in the following conditions:
- The ambient air temperature - from -50 ° C to +60 ° C%
- Relative humidity 95% at +35 ° C.
Positioning and mounting E421.1
Ammeters E421.1 designed for flush mounting on vertical or horizontal panels (panels) made as of the magnetic and non-magnetic materials.
When installing E421.1 need to adhere to the following rules:
- Installation of equipment should be made carefully, without distortions;
- Fastening ampermetrovE421.1 panel must be rigid and not create additional stress;
- Ammeter E421.1 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.
Ammeter E421.1 meets the requirements for ensuring safety of life, health, consumer and environmental protection.