The digital power measuring transducer AD-LU 10 GT measures all quantities of the power-network (current, voltage, energy, harmonics, phase angle, active power, reactive power, apparent power … ) and converts these measuring values onto one freely scalable analogue output (20 mA). In addition, the device also has a transistor output for S0 pulses or for reporting limit values. The unit is therefore optimal suitable for integration in energy management systems. One phase ore balanced 3- or 4-wire systems can be measured. The AD-LU 10 GT is supplied via its measuring voltage L1. The current measuring is carried out via the bar-type transformer mounted on the front. For measuring of high voltages or high currents, external transformers can be connected in series at any time. The AD-LU 10 GT can be read out and parameterised via the integral interface with the aid of the available AD-Studio. An LED at the front signals the operating condition. The compact type of construction and the high performance ability with simultaneous low energy consumption allows usage in almost any application.



Typical usage in industrial plant, machines or energy management systems for balancing and determination of energy distribution.
Attention: This is a Class A product according to EN 55011. Additional EMC actions may be necessary when used in small businesses or in residential areas.

Specific characteristics

  • compact design
  • current measurement via clamp on current transfomrers
  • supplied via its measuring voltage L1
  • current output (mA)
  • S0- or Limit-Output
  • monitoring all variables of the three-phase network
  • parameterization via AD-Studio

Business data

Order number
Power measurement transducer AD-LU 10 GT
Accessory (optional)
VarioPass3 USB-inetrface adapter
AD-Studio Configuration software
EClass 27210124
Customs tariff number / country of origin 8543 70 90 / Deutschland


Data sheet pdf en-lu10gt.pdf (227 kB)
Tender text zip (19 kB)
Safety instructions pdf ad-safety-instructions.pdf (43 kB)

Technical specifications

Input current
Measuring ranges 0 ... 1 A AC; 0 ... 5 A AC;
0 ... 20 A AC
Max. conductor diameter 4,8 mm
Max. measurable harmonic 40
Input voltage
Measuring range 80 ... 253 V AC
Input resistance > 900 kOhm
Output current
Output range 0/4 ... 20 mA
Max. load 400 Ohm
Resolution 11 Bit
Residual ripple 25 µAss
Transistor output
Max. switching load 30 V DC, 20 mA
Pulse length min ... max 50 ms ... 10000 ms
Voltage range AC 80 ... 253 V AC, 50/60 Hz (see voltage-inputs)
Nominal voltage AC 230 V AC
Power consumption Max. 4 VA
Transfer behavior - in reference to the current value
Basic accuracy < 0,5 % (class 0.5)
Temperature influence 80 ppm/K
Response time < 0,5 s
Dimensions (WxHxD) 35,5x90x70 mm
Type of protection IP 20
Connection method Screw clamp
Terminals, wire cross section 2,5 mm² flex wire / 4 mm² one wire
Bolting torque terminals 0,6 Nm
Skinning length 6 mm
Weight ~ 150 g
Manner of fastening 35 mm DIN rail 35mm
Environmental conditions
Ambient temperature -10 ... 50 °C
Storage and transport -10 ... 70 °C (no condensation)
Product family standard EN 61326-1 1)
Emitted interference EN 55011, CISPR11 Cl. A, Gr. 1
Electrical safety requirements
Product family standard EN 61010-1
Overvoltage category II
Pollution degree 2
Safety measurement EN 61010-2-030
Measurement category CAT II
Galvanic isolation, test voltages
Grid side to analoge output 4 kV, 50 Hz (1 min.)
Power Supply to Transistor Output 4 kV, 50 Hz (1 min.)
Protection circuits
Input Electrical surge protection
Power supply Protection against over-temperature, over-voltage and over-current
Analogue output Electrical surge protection
1) During checking, slight signal deviations are possible.

Block and wiring diagram




CAD / CAE Daten

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