Control Instrumentation Supplier to the South African Electrical Industry
Analogue Max Demand / Max Demand with Instantaneous Meters
MAX DEMAND METERS
A maximum demand meter (MDI) measures the highest average electrical power consumption (or) of a site over a specific interval, typically 30 minutes. Used for utility billing and infrastructure, it helps manage peak load, prevents overloads, and determines penalty charges based on maximum energy demand
Bimetal Maximum Current Meters MQ
Bimetal maximum current meters with a bimetal measuring system are intended for testing the thermal load of transformers, cables, electrical machines, etc. They indicate average rms current value in a setting period of 8 minutes (on request 15, 20 and 30 minutes for the MQ0207 and the MQ0307). The accuracy class is 3 and the meters are provided with an interchangeable scale. Meters in the size of 96 x 96 mm with a protecting transformer are also available on request.
MQ0207
Technical data Meters are available with different front frames: MQ 0507 – 45 x 45 mm MQ 0407 – 48 x 48 mm MQ 0307 – 72 x 72 mm MQ 0207 – 96 x 96 mm MQ 0107 – 144 x 144 mm All have 90 degree dials.
MAX DEMAND METERS WITH INSTANTANEOUS
Combined Bimetal Maximum Current Meters MQ
Combined bimetal maximum current meters are provided with a built-in bimetal system and a system with a moving iron. The meters are intended for testing momentary and thermal load of transformers, cables, electrical machinery, etc. Meters with dimensions of 96 x 96 mm with a protecting transformer are also available on request.
Technical data
Meters are available with different front frames:
MQ 0317 – 72 x 72 mm
MQ 0217 – 96 x 96 mm
MQ 0117 – 144 x 144 mm
Note:
Protection saturation ct available on request
MQ0217
The accuracy class for average rms current value is 3, and for momentary value 1.5. The meters are provided with an interchangeable scale.