Ammeter АМ4080

Ammeter AM4080

АМ4080 is digital measuring, fully programmable device from series 4080, designed on basis of microcontrollers. It measures current up to 10 A AC/DC (it can measure any other current by connecting external shunt resistor or current sensor). AM4080 can be directly connected to current transformer with maximum secondary current of 10 AAC. The device has potential-free contacts for remote signalization if measured current goes out of certain specified range (option “R”). It is designed to be mounted on boards in control rooms of electrical substations.

user manual

AM4080 is offered in following variety*:

- (A/D) basic option, without any relay contacts, user menu is not code-protected
A AC current measure
D DC current measure
S for measuring with external shunt resistor
E for measure with external current sensor (it is needed the type of the sensor to be specified)
R there are three relay contacts that provide remote signalization, acting when certain programmed voltage levels are reached
C code-protected user menu
X user is not allowed to change device settings
* - Every option can be ordered in any combination with other options, excluding versions “A” and “D”, which exclude each other as well as versions “S” and “E” and versions “C” and “X”. One of the options - “A” or “D” must be specified.

Main technical parameters of АМ4080

measurement of DC or/and AC current
maximal input current 10 АAC/ADC (overload max 10 times for 100 ms)
inner shunt resistance 0.010 Ohm @ 5 AAC/ ADC; 0.005 Ohm @ 10 AAC/ ADC
power supply 55-250 VAC (80-350 VDC)/ 30-270 VAC (42-380 VDC)
display super bright red, 4-digit, 76х25 mm visible, purple filter
measurement error < 0.8 % rgd + 2 digit
measurement cycle < 1 s
relay contacts count up to 3
power consumption < 3 W
work temperature from 0° C to 55° C
dimensions (H/W/D) 48/96/85 mm or 96/96/85 mm (w/o plugs); 48/96/95 mm or 96/96/95 mm (with plugs)
mounting hole (H/W) 43/90 mm or 90/90 mm quad, centered
protection class IP52 front, IP31 back
own weight 320 g

Normal mode of operation

User-defined parameters

  • nominal (primary) current
  • decimal point position
  • low current level
  • high current level
  • display blinking when Hi/Lo
  • hysteresis
  • delay for switching relay contacts