Multifunction Power measuring device

Janitza UMG 96 S is a universal digital power analyser designed for precise measurement, monitoring, and analysis of electrical parameters in three-phase low-voltage systems (TN and TT networks). It is widely used in switchgear and distribution panels for energy management, power quality analysis, and load monitoring.

Key Features

• Measurement Functions:

  • Measures voltage (L-N, L-L), current (via external CTs, ../5A or ../1A), active power (kW), reactive power (kVar), apparent power (kVA), frequency, power factor (cos φ), and energy (kWh, kVarh)

  • Supports four-quadrant measurement (import/export)

  • Harmonic analysis up to the 15th harmonic (V/A)

• Voltage Measurement:

  • Direct measurement up to 300 V AC (L-N), 520 V AC (L-L), 50/60 Hz (standard version)

  • Measurement category: 300 V CAT III for increased safety

• Current Measurement:

  • Via external current transformers (../5A or ../1A), max. 6 A

• Accuracy:

  • Active energy: Class 0.5S (../5A)

  • Voltage and current: ±0.5%

• Display:

  • Large, backlit LCD for clear presentation of all measured values, even in difficult lighting conditions4

• Outputs and Interfaces:

  • 1 digital/pulse output (for energy or alarm)

  • RS-485 interface, supporting Modbus RTU protocol for integration into higher-level systems and energy management software

• Mounting and Design:

  • Compact panel-mount housing (96 × 96 mm), cut-out 92 × 92 mm

  • Pluggable screw terminals for easy wiring

  • Operation via 2 keys; password protection for configuration

• Protection and Durability:

  • Front: IP54 (with seal); Rear: IP20

  • Impact resistance: IK07

  • Operating temperature: -10°C to +55°C; storage: -25°C to +70°C

  • Relative humidity: up to 75% during operation

• Power Supply:

  • AC: 90–265 V AC; DC: 90–250 V DC

• Weight: Approx. 250 g (net), 500 g (packaged)

• Approvals: IEC 61010, IEC 61326, and others

Typical Applications

• Energy monitoring and cost centre recording

• Power quality analysis (including harmonics)

• Load analysis and limit value monitoring

• Integration into building management systems or PLCs via Modbus RTU

• Replacement for multiple analogue instruments (ammeter, voltmeter, power meter, etc.)