Predictive Maintenance Predictive Maintenance - Energy & Power Monitoring and Motor Protection
MultiSmart has an optional power & energy module. This module - in conjunction with the flow module - provides the CO2-friendly capability of pump efficiency monitoring.
MultiSmart directly measures the 3-phase supply (no signal conditioning required), and the 3-phase currents for each pump. With high speed I/O processing, the unit calculates kW, KVA, power factor, KWHr, KVAH.
Note: The I/O processor is a separate board from the "Host processor" board which manages the comms and high level control and monitoring. This eliminates the problems of many RTUs, which in practice struggle to run a comprehensive high level application and also capture high speed I/O.
All of this valuable pump and station data is available to SCADA through the open protocol RTU module - eliminating integration costs.
Read more about pump efficiency and CO2 benefits.
Motor Protection
This module has many additional features:
Over-current protection - protects the pump against locked rotor or blocked pump
Under-current protection - protects the pump against loss of pressure from impellor falling off or burst pipe
Phase fail - protects the motor against current imbalances in the windings
Ground/earth fault - protects the motor against current leakages from winding breakdown
Phase rotation - protects the pump against a reversal of the motor
These features are all available because the MultiSmart power and energy module measures 3-phase currents for each pump.
All of these faults are available to SCADA - reducing operations cost significantly. With this detailed faults data, an organization can send the right person to site.
Even better, remote fault reset and remote pump control is built into the product and the communications - often eliminating the need to send someone to site!
Insulation Resistance - Meggering
The power and energy module also provides a "meggering" function - daily or weekly measuring of the insulation resistance in the motor windings.
The leading cause of pump and motor failure is the breakdown of the insulation in the windings and many organizations have an electrician visit the pump station every 3-6 months to do a manual check.
This features automatically measures the value and makes it available over SCADA and on the MultiSmart screen. There is also the added benefit of providing an alarm, or pump fault at a user-defined threshold.
For example, the pump can be held out when the threshold is reached, or a "display-only" fault can be created, which allows the pump to run, but flags a warning on the MultiSmart screen - and to SCADA.
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