BH 9097

The motor load monitor BH 9097 checks the active power consumption of electrical consumers. As the measuring principle is only single phase correct measurement of 3-phase load is only possible when all three phases have the same load which is normal with motors. Using DIP-switches the unit can be set up to act as under- and overload relay P1min / P2 max. or as overload relay with pre-warning P1 max. /P2 max. The settings of P1 and P2 are absolute values and calibrated in Watts adjustable via rotational switches. 2 LEDs show the state of the corresponding output relays. The unit can be configured to energise or to de-energise on fault. Every output relay is fitted with it´s own time delay tv. A start-up delay ta acts on both outputs.

• According to IEC/EN 60255-1, IEC/EN 60255-26, DIN/VDE 0435-303
• Identification of
  - Underload P1 and Overload P2
  - Overload P1 (prewarning) and Overload P2 programmable
• Adjustment of P1 and P2 on absolute scale
• For motors up to 22 kW / 400 V; 37 kW / 600 V
• Measurement: effective power
• Large current range because of automatic range selection
• 1 changeover contact for P1 and 1 changeover contact for P2
• Adjustable start-up delay ta
• Adjustable switching delay tv
• With automatic or manual reset, programmable
• Test / Reset button for easy setup
• Up to 40 A without external current transformer
• De-energized or energized on fault, programmable
• Also for single-phase operation
• LED indicators
• Width 45 mm