Multifunction Power measuring device

Janitza UMG 96L (255 V version) is a universal digital power meter designed for continuous measurement and monitoring of electrical parameters in three-phase systems, especially for low-voltage switchgear and distribution panels.

Key Features:

• Voltage Measurement:

  • Direct connection for three-phase systems (with neutral) up to 275 V AC (L-N) and 476 V AC (L-L)1.

  • The standard version is preset for 196–255 V (L-N), with a typical transformer ratio of 400 V (L-L) for low-voltage networks.

• Current Measurement:

  • Via external current transformers (../5A or ../1A CTs).

• Measurement Functions:

  • Measures and displays voltage, current, active power (kW), reactive power (kVar), apparent power (kVA), frequency, power factor (cos φ), and energy (kWh, kVarh).

  • Stores minimum and maximum values every 15 minutes; programmable display for all measured values.

• Display:

  • LCD with backlighting for clear presentation of all measured values.

• Sampling Rate:

  • 2.5 kHz at 50 Hz, 3.0 kHz at 60 Hz.

• Power Supply:

  • Powered directly from the measured voltage (L1-N).

• Mounting:

  • Panel mount (96 × 96 mm), easy installation in switchboards.

• Operating Temperature:

  • -10°C to +55°C.

• Protection:

  • Front: IP50 (IP65 with seal), Rear: IP20.

• Applications:

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

  • Energy monitoring, load analysis, and power quality monitoring in low- and medium-voltage distribution boards.

Note: The 255 V version is typically used for direct connection in standard low-voltage networks (230/400 V), and the device can also be programmed for use with voltage transformers for higher voltages