Coil Analyzers


SAT Series

The Coil Analyzers SAT30A and SAT40A are powerful, lightweight units ideal for testing of circuit breakers. Substation battery is not connected or available. The SAT series instruments are intended to supply circuit breaker coils and spring charging motors. They spring charging motors (SAT40A – AC and DC) as a part of commissioning and maintenance testing.

SAT Series instruments have the possiblity to generate at 230V mains supply and inrush currents up to 30A (SAT30A) or 40 A (SAT40A). Continuous current according to the tables below:

Max load
110 V 24 A 20 sec
110 V 20 A 60 sec
220 V 12 A 20 sec
220 V 10 A 60 sec
Max load
110 V 30 A 20 sec
110 V 24 A 60 sec
220 V 15 A 20 sec
220 V 12 A 60 sec

SAT series instruments have very high ability to cancel electrostatic and electromagnetic interference in high voltage electric fields in accordance to EMC standard 2004/108/EC. It is achieved by very efficient filtration. The filtration is made utilizing proprietary hardware and software. The set is equipped with thermal and overcurrent protection.

Info SAT30A SAT40A
Coils output DC voltage 10 V – 300 V 10 V – 300 V
Coils output AC voltage 10 V – 250 V 10 V – 250 V
Motor output DC voltage 10 V – 250 V 10 V – 250 V
Motor output AC voltage Not available 10 V – 250 V
Voltage resolution 1 V 1 V
Accuracy 0,5 % 0,5 %


Included accessories

  • Mains power cable
  • Ground (PE) cable
  • USB cable
  • DV-SAT software

Recommended accessories

  • Cable set 6 x 2 m
  • Device bag
  • Cable bag

Optional accessories

  • Cable set 6 x 5 m
  • Bluetooth communication module
  • Transport case
  • Cable plastic case

SAT series

Coil Analyzers can perform the current and resistance measurement of the circuit breaker coils. It is made in accordance to IEC 62271-100 standard. SAT series instruments can also perform the minimum trip voltage test mechanism charging time (IEC 62271-100) of the circuit breaker coils.

The minimum trip voltage test is described in several international and national standards such as IEC 62271-100, IEC 56, ANSI C37.09 etc. Other important parameters can be tested with Coil Analyzers. They are compatible with the circuit breaker analyzers from different vendors.

Typical applications:

  • operating circuit breakers
  • supplying spring-charging motors
  • coils resistance measurement
  • coils current measurement
  • minimum trip voltage-test of the circuit breaker’s coils
  • as a power supply in the tests with breaker analyzers from different vendors

The Coil Analyzers can also be used as a general power supply unit or a temporary battery charger.

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