| Design Features
The Viking Power load monitors provide a simple,
cost effective, state-of-the-art method to monitor pump and system problems
and alarm or shut down the pump when a change of load is detected at the
motor. They are applicable to positive displacement or centrifugal
pumps, as well as other types of motor-driven equipment. They are
especially useful for pumps which are susceptible to damage due to dry
running, such as sealless magnetic drive pumps.
The M-10 monitors can be set to detect either
an underload condition (indicating dry running or cavitation) or an overload
condition (indicating overpressure* situations). The M-20 can detect
both underload and overload conditions. The monitors are capable of
handling both 50 and 60 Hz power, single or three phase, on loads up to 999
HP.
*Note: The power load monitor should not be
used as exclusive protection in case of sudden discharge line blockage on
positive displacement pumps. Other means of protection such as a
pressure relief valve must be used in conjunction with the power load
monitor to avoid pressure spikes in the system.
Specifications
Supply Voltage: M10: 1-phase 100-240, 3-phase
100-600; M20:1-phase 100-240, 3-phase 100-240, 380-500, 525-600.
Mounting: 35mm DIN-rail 46277
Approved to: UL, CE (up to 690V), cUL
Startup Delay: M-10: 1-64 seconds; M-20:
1-999 seconds
Response Delay: M10: 0.05-64 seconds; M-20:
0.1-90 seconds
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