Main Technical Parameters of ELTEK

Automatic Load Transfer (ALT)

  Maximum input linear voltage, V

800

  Ranges of lower voltage for switching over ALT inputs, V  

150…320
(-60%…-16% out of rated load)

  Ranges of unbalance factor for switching over ALT inputs (phase loss), %

 10…95

  Options for main power supply input

available

  Delay period between switching over of electromagnetic contactors (in ALT mode), s

from 0.005 ms to 5 (adjustable)

  Emergency power supply

available

  Emergency protection in case of electromagnetic contactors failure

available

Overload Protection

  Ranges for inputs switching over in case of overload, V

418…560
(-10%…+47% out of rated load)

  Cutting off time in case of overload, ms

20

  Maximun relative error when metering overload level, %

± 2 (from 10 ms)
± 10 (up to 10 ms)

Register

  Metering ranges for existing value of linear voltage for all inputs, V

150…760

  Minimum time for overload registration, ms

2

  Minimum time for registration of under load and load loss, ms

20

  Maximum relative error when metering voltage, %

± 2 (from 10 ms)
± 10 (up to 10 ms) 

  Metering ranges for unbalance factor, %

 0 - 99

  Maximum relative error when metering unbalance factor, %

 ± 5

  Network frequency measuring ranges, Hz

 40…60

  Maximum relative error when metering network frequency, %

 ± 0.2

  Maximum memory capacity with 1 mln. events, days

60

Interface

  Number of digital outputs

6

  Number of digital inputs

2

  Rated commutation voltage for digital outputs, V

18 ‑ 36 (DС)
220 (АС)

  Commutation current for digital outputs, A

up to 1 (DC)
from 0.01 up to 1 (АС)

  Rated voltage for digital inputs, V

24

  Maximum exchange rate through RS-485 interface, bit/sec

9600

  Maximum exchange rate through USB interface, bit/sec

57600

Parameters

  Rated supply voltage, V 

 220 (AC)

  Power demand, W, not more

25

  Dimensions, mm

400х260х160

  Weight, kg, not exceeding

9

  Operating temperature,°C

- 25…+ 40