I. Basic principle of selection of motor protector
At present, there is no unified standard for motor protectors on the market. Almost every manufacturer has its own model specifications for 00-130-547. In order to meet the needs of different customers, manufacturers derive a lot of products for different purposes, a wide variety of users to the selection of a lot of inconvenience, users in the selection should give full consideration to the actual needs of motor protection, 00-130-547 reasonable choice of protection function and protection mode, in order to achieve good protection effect, 00-130-547 to improve the reliability of equipment operation, reduce unplanned stop, reduce the purpose of accident losses. Two, the basic method of motor protector selection
(I) Conditions related to selection:
The selection of motor protection is based on the relationship between motor and protector. The following are several conditions and factors related to protection to provide reference for users in the selection
1. Motor: It is necessary to understand the model specifications, motor functional characteristics, protection type, rated voltage, rated current, rated power, power frequency, insulation level, etc. These contents can basically give the user how to correctly choose and use the motor protector to provide a reference basis.
2, environmental conditions: mainly refers to room temperature, high temperature, high cold, corrosion degree, vibration degree, wind sand, altitude, electromagnetic pollution, etc.
3, motor use: such as fans, water pumps, air compressors, lathes, oil field pumping units and other different load mechanical characteristics, such as the pump motor protector, it should have the underload function, when the water 00-130-547 pump will be pumped out, the protector needs to give protection instructions.
4. Control system: The control modes include manual, automatic, local control, remote control, independent operation of a single machine, centralized control of the production line, etc. Starting modes include direct, step-down, star triangle, 00-130-547 frequency sensitive rheostat, frequency converter, soft starting and other starting modes.
5, other aspects: the user on the site production monitoring management is more casual or rigorous, abnormal shutdown on the production of the severity of the impact.
There are many factors related to the selection of motor protector, such as installation position, power supply, and distribution system coordination; Also consider whether to buy a new motor protector, or to upgrade the protection of 00-130-547 motor, or to improve the protection of accident motor, etc.; It is also necessary to consider the difficulty of changing the motor protection mode and the degree of impact on production; The selection and adjustment of motor protector should be considered according to the actual working conditions on site.