Description
Intelligent controller performance
- Intelligent controllers are divided into: 2M type (ordinary intelligent type), 2H type (communication type), 3M (liquid crystal type), and 3H(liquid crystal communication type)
- Equipped with overload long delay inverse time limit, short delay inverse time limit, timing limit, and instantaneous functions. The required protection characteristics can be set by the user;
- Single phase grounding protection function;
- Display function: current display, voltage display (note instructions when ordering);
- Alarm function: overload alarm;
- Self inspection function: overheating self inspection, microcomputer self diagnosis;
- Test function: Test the action characteristics of the controller.
Ambient air temperature
The upper limit value shall not exceed+70 ℃ , the lower limit value shall not be lower than -25 ℃ , and the 24-hour average value shall not exceed+40 ℃ .
Note: For working conditions with an upper limit value exceeding+40 ℃ or a lower limit value below -10 ℃ or -25 ℃ , users should declare and negotiate with our company;
The elevation of the installation site shall not exceed 2000 meters.
Atmospheric conditions
The relative humidity of the atmosphere should not exceed 50% when the surrounding air is+40 ℃ . In lower temperatures, there can be higher relative humidity. The average maximum relative humidity in the wettest month is 90%, and the average minimum temperature in that month is+25 ℃ . Considering the condensation on the product surface due to temperature changes, if it exceeds the specified requirements, it should be negotiated with our company.
Protection level: IP30
Pollution level: III
Usage category: Class B
Installation category: Circuit breakers and undervoltage releases with rated working voltage of 690V and below, and primary coils of power transformers for installation category IV; The installation category of auxiliary and control circuits is I.
Structure Overview
Installation conditions
The circuit breaker should be installed according to the requirements of this manual, and the vertical inclination of the circuit breaker should not exceed 5 degrees (the inclination of mining circuit breakers should not exceed 15 degrees)
Front indication of circuit breaker.
Preparation before installation
Before installation, use a 500VDC megohmmeter to check the insulation resistance of the circuit breaker according to regulations. At an ambient temperature of 25 ℃ ± 5 ℃ and a relative humidity test of 50%~70%, it should not be less than 500MΩ.
The insulation resistance testing position is: when the circuit breaker is closed, between each phase and ground; When the circuit breaker is disconnected, between each phase and each pole.
