Type and meaning
Normal working conditions
◇ Altitude: ≤2000m;
◇ Ambient temperature: -5℃-+40℃;
◇ Can withstand the influence of humid air;
◇ Can withstand the influence of salt spray and oil mist;
◇The installation category of the main circuit of the circuit breaker is III, and the installation category of the other auxiliary circuits and control circuits is II;
◇When the maximum temperature is +40℃, the relative humidity of the air does not exceed 50%. Can be tolerated at lower humidity
◇With high relative humidity, special measures should be taken for occasional condensation due to temperature changes;
◇The maximum inclination is 22.5°;
◇In the medium without explosion hazard, the lunar medium has no gas and electric dust enough to corrode metals and destroy insulation the place;
◇where there is no rain or snow
◇ It has the characteristics of small size, high breaking capacity, short arcing, anti-vibration, etc.
◇Same external dimensions and installation dimensions as JCM3:
◇The new circuit breaker has a high isolation function, and its rated insulation voltage is 800V:
◇According to the rated ultimate short-circuit breaking capacity, it is divided into M type (higher breaking type) and H type (high breaking type):
◇With overload long-time delay inverse time, short-circuit short-time delay definite time, short-circuit instantaneous and under-
voltage protection functions, residual current protection (optional), phase loss protection (optional), it can protect the power supply
equipment of the line from damage:
◇The protection features are complete and accurate, which can improve the reliability of power supply.
◇With temperature monitoring and protection function: when the ambient temperature exceeds the set value (the default setting is
85°C), the controller will output an alarm photoelectric signal or open the circuit breaker:
◇Dual-channel passive signal output function: for signaling (or alarm), capacity AC230V5A:
◇With overload thermal memory function: overload thermal memory function, short circuit (short delay) thermal memory function:
◇With fire shunt function: overload alarm does not trip (provides a pair of passive contacts) and provides shunt tripping function;
◇With communication function: standard RS232, RS485, Modbus field bus protocol:
◇Can be connected to a handheld programmer: set various protection parameters of the circuit breaker, perform nearly 10 fault queries and various status displays;
◇Can be connected to intelligent control mode converter: convert optical isolation contact signal output, including programmable DO output function:
◇High-end type with LCD module.
Main functions and features
The intelligent controller is the core component of the moldedd case circuit breaker. It is used in motor protection or power?distribution protection to realize the integration of measurement, protection, control and communication functions, so that lines and power equipment can be protected from overload, short circuit, grounding and other fault hazards. Using MCU microprocessor controller, the performance is stable and reliable: the intelligent controller can supply power by itself, as long as one phase is energized, when the current is not lower than 20% of its rated value, it can ensure the normal operation of the protection function; selective cooperation has three Section protection: Use the circuit breaker of class B and other short- circuit protection devices connected in the same circuit to have selective cooperation under short-circuit conditions: overload long-?delay inverse time, short-circuit delay (inverse time, definite time), short-circuit instantaneous The setting of the protection function?parameters; It has three-stage protection parameter settings of action current and action time, and can be adjusted in 4-10 steps: the user can adjust the controller settings according to the load current requirements, and can also choose to shut down the corresponding function according to the user's requirements (customized functions, need to be ordered by the user time indicated); High current instantaneous tripping function: When the circuit breaker is closed and running, if encountering a large short-circuit current (≥201nm), the magnetic tripping mechanism of the circuit breaker can directly trip, and the double protection is more reliable and safe; With tripping test (test) function: input DC12V voltage test circuit breaker operating characteristics; Fault self-diagnosis function: protect and detect the working state and operation of the intelligent controller itself; With pre-alarm indication and overload indication: when the load current reaches or exceeds the over-set value, it is equivalent to the light guide column to export the light source; The double air gap technology of the touch-through exchanger: the work is more reliable and stable, the malfunction is avoided, the tripping is reliable, and the power is small; High protection accuracy: overload protection, short-circuit short-time delay protection action time accuracy ±10%; short-circuit instantaneous protection action value accuracy ±15% depends on the operating current; The installation has interchangeable external dimensions, and the installation dimensions are the same as those of the LDM1 series moldedd case circuit breaker.
Note: JCM3E-M-630 is the same as JCM3E-M-800, based on JCM3E-M intelligent communication type or programming?communication type.