Ammeter E389 (E-389, E 389)
Ammeter E389 is designed for measuring, signaling and control voltage at 50Hz.
Dimensions - 250h182h30mm.
Accuracy class - 1.5.
Technical characteristics of the devices ammeters E389:
Accuracy class - 1.5.
Measuring ranges and switching devices ammeter E389 are shown in Table 1.
Table 1: Measurement range and the inclusion of devices ammeter E389
Photocontact error in modifications to the device, CP, TC max ± 2,5% full scale.
Output current contact device ammeter device E389 ranges from 50mkA in a darkened state (at a supply voltage of lamp 6V) to 250mkA the lit state (at a supply voltage of lamp 5B).
Contact device is powered by DC 12V (allowable voltage deviation of -15% to +10%).
Pointer Updates ammeter device E389:
- Pointing - A;
- Signaling - C;
- Three-phase pole - K;
- Two positions to the right contact - KP;
- Two positions to the left contact - CL.
The scope of the instrument pointer ammeter E389 are shown in Table 2.
Table 2 Scope of the instrument pointer ammeter E389
Settling time moving part - no more than 4s;
Install unit ammeter E389 on vertical panels and boards and angles 15 º, 30 º, 45 º, 60 º, 75 º (stipulated in the order).
Mounting brackets to the panel.
Temperature - from -30 º C to +50 ° C.
Relative humidity - up to 90%.
Changing E389 ammeter readings caused by ambient temperature deviation from normal to any (class H) for every 10 K, does not exceed ± 1,2%.
Change in the readings caused deviation of ambient temperature from normal to any (range -30 º C to +50 º C) for every 10 K, does not exceed ± 2,0%; under the influence of an external magnetic field of 400 A / m - not more than ± 2, 5% when the instrument is on a ferromagnetic shield thickness of 4 mm - less than ± 1,0%.
System devices ammeter E389 - electromagnetic.
On the instrument - with a light pointer and irregular schedule.
Dimension E389 devices ammeter - 250h182h30mm.
Weight - 1.2 kg.
Mean time to failure of the device ammeter E389 - no less than 25,000 hours;
Average life - 6 years;
The manufacturer guarantees that the quality of the instrument ammeter E389 technical requirements specifications provided the customer terms and conditions of storage, transportation, installation, operation, and its specified operational documentation.