Power supply & other units

Equipment for Laboratories and Schools

Tabletop variable power supply units are an essential piece of equipment found in repairs shops, classrooms for teaching future electricians and electrical engineers, scientific laboratories and many other places where there is a need for dependable and adjustable voltage/current source. Metrel offers 3 models of power supply units, differing primarily in the highest output voltage/current and types of connection sockets.

Another essentials in Metrel’s product portfolio are resistance, inductance and capacitance decade boxes. All decade boxes are equipped with large dials for easy operation and are built to last thanks to their all-steel construction.

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Tabletop variable power supply units are an essential piece of equipment found in repairs shops, classrooms for teaching future electricians and electrical engineers, scientific laboratories and many other places where there is a need for dependable and adjustable voltage/current source. Metrel offers 3 models of power supply units, differing primarily in the highest output voltage/current and types of connection sockets.

Another essentials in Metrel’s product portfolio are resistance, inductance and capacitance decade boxes. All decade boxes are equipped with large dials for easy operation and are built to last thanks to their all-steel construction.

  • Equalisation of metal housing, insulation and rugged connection terminals offer excellent protection for users in case of faults.
  • Galvanic separation of regulation transformers and power supply units.
  • Very robust design of middle point of variable transformers can take nominal current permanently.
  • Design of connection plate offers replacement of most built-in variable transformers.

 

Variable Transformers, Toroidal Transformers and Power Supply Units

  • Separated primary and secondary windings on galvanic isolated variable transformers.
  • Separated primary and secondary windings on galvanic isolated toroidal transformers.
  • Power supply units are equipped with a V-meter and A-meter.
  • Permanent control over output voltage and current.
  • Power supply units are overload-protected with a circuit-breaker which disconnects the secondary circuits when a short-circuit condition occurs at the output.
  • Housing with internal guarding.

 

MA 2405 Decade capacitor

  • Metallic case.
  • Housing with internal guarding.
  • It consists of 3 decades.
  • Selection of the capacitance in range of 100 pF up to 100 nF.
  • Set value is directly visible on decade’s dials.
  • Capacitor used are high quality polypropylene with accuracy of 5 %.
  • Very good DC insulation resistance.
  • Insulation materials with low dissipation factor.
  • Frequency ranges supported of 500 kHz and more.

 

MA 2705 Decade inductance

  • Metallic case.
  • It consists of 3 decades.
  • Selection of the inductance in range from 0 mH up to 999 mH.
  • Set value is directly visible on decade’s dials.
  • Decade inductance uses ferrite chokes providing accuracy of 5 % at 50 % of rated current.

 

MA 2115 and MA 2115 S Decade resistors

  • Metallic case.
  • It consist of 7 decades with each own rotary switch.
  • With range multiplier from 0 to 9, and ∞.
  • 4 mm sockets are connected to each resistance chain.
  • Split resistance chain into two or more independent insulated groups.

 

*Note: Presented features, functionalities and other information on this page represent a compound list of all products’ capabilities and not capabilities of each separate product. Consult datasheets and user manuals of each specific product for detailed information about supported features and functionalities. 

  • Electronic industry (control labs).
  • Research & Development departments.
  • Laboratory test equipment.
  • Calibration and adjustment departments.
  • Production lines.
  • Service workshops.
  • Regulation systems.
  • Single or three Phase regulation equipment.
  • Manual or motor driven devices for regulation of voltage or current.
  • Settings of currents through hot wires in industrial cutting machines.
  • Voltage and current adjustment for different purposes, chargers etc.
  • Regulation of drive motors on production lines.
  • Motor speed regulation.
  • Portable galvanic separation for field testing.
  • Portable regulators.
  • Technical education.
  • Didactic table desks with built-in regulation.
  • Everywhere adjustable supply voltage is needed.
  • Where for technical or safety reasons the power supply source has to be galvanically isolated from the mains.
  • Test voltage of 4 kV AC RMS between input / output enables using the units in CAT III / 300 V environment.

 

*Note: Presented features, functionalities and other information on this page represent a compound list of all products’ capabilities and not capabilities of each separate product. Consult datasheets and user manuals of each specific product for detailed information about supported features and functionalities.