Common reasons for equipment tripping
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Here is a common question: 1. Can high outlet pressure of a centrifugal pump cause the pump to shut down? 2. Can pressure buildup at the outlet of a blower or compressor cause the equipment to shut down?
Really? I only know that there are shutdown devices for high oil pressure, cooling water temperature, and motor voltage; I’ve never heard of anything else.
Generally, not； The equipment trip protection is set based on the motor load; it activates only when the motor is overloaded, that is, when an overcurrent occurs. It is generally caused by factors such as excessive traffic, mechanical failures of the equipment, low voltage in the pipeline network, and faults in the motor itself.
What is a stop jump? It depends on the settings of the protection device; if it’s not set up, the pump won’t stop even if it gets damaged. If interlocks for pressure, temperature, current, etc. are set, the system will of course shut down in case of overpressure.
Generally not. Excessively high discharge pressure can cause surging in blowers, and it can lead to seal leakage in centrifugal pumps; generally, neither condition will cause a trip
If the material pumped has a high viscosity, it can easily cause the pump to get stuck and stop operating; I’ve encountered this situation before, but it generally doesn’t happen.
It depends on how your interlock protection is set; our pumps trip even at low current levels.
The high inlet and outlet resistance of rotary vane blowers can cause the equipment to shut down suddenly. Pressure buildup at the outlet of an oil-free screw compressor can cause damage to the equipment.
Overcurrent protection is usually available only in large motors. Most equipment shutdowns are due to overload
The pressure buildup at the outlet of a centrifugal compressor can cause surge in the compressor. In such processes, a surge valve is installed in the compressor; this automatic valve activates in response to surge, and in order to prevent damage to the equipment, the compressor shuts down automatically as a result
A high outlet pressure of the centrifugal pump generally does not cause this issue; however, if the pump is under vacuum conditions, it may lead to an automatic shutdown