For the inspection of circuit breakers, for large-scale frame breakers such as DW17, in addition to the design of the type test, the periodic test of the manufacturer after mass production, you can also refer to the following points:
First, the inspection before power-on
Check the shipping box of the transport circuit breaker. There should be no paper scraps or dust attached to the circuit breaker; check the connection status of the wires; check the withstand voltage performance and other basic conditions to ensure that there are no problems.
Second, the low-voltage circuit breaker internal inspection should pay attention to matters
When it is necessary to open the cover to check the mechanism and the contact system of the circuit breaker, since the insulation partition, the arc extinguishing chamber and the like inside the circuit breaker are easy to fall, after the cover is inspected, it is necessary to carefully check the parts that are easy to fall. One-to-one recovery, for small-shell rated current circuit breakers, such as the common DZ47-63, DZ47-100 leakage circuit breakers. A seal (or warning sign) is attached between the bottom and the cover to prevent the adjustment of the tripping component. Therefore, the customer should pay special attention not to move the tripping component, otherwise the performance will change and the manufacturer is not responsible. of.
3. Inspection items and treatment methods for circuit breakers after short circuit
When a circuit breaker is in a general short circuit, its breaking current is often the expected short-circuit current value of the small dry line (ie, less than the ultimate short-circuit breaking current of the circuit breaker). This is due to the difference between the short-circuit point and the power supply, the line impedance of the short-circuit point, and the difference between the rated voltage of the circuit breaker and the voltage of the actual line.
For short-circuit currents smaller than the rated short-circuit breaking capacity of the circuit breaker (such as the circuit breaker DZ47LE), it can be used as it is after being disconnected. However, if the breaking is the rated ultimate short-circuit current or the breaking of the harsh conditions of the cascade (backup) protection, the damage of the circuit breaker is mostly. In the actual operation of running short-circuit current breaking, when the short-circuit current is disconnected and the short-circuit accident is eliminated, the circuit breaker needs to be closed again (even if the rated short-circuit current is broken), but after the short-circuit current of the same value is broken again, the circuit breaker It must be replaced.
Fourth, regular inspection
According to the use environment and working conditions, the low-voltage circuit breaker is necessary to carry out periodic periodic inspections, pay attention to dust and cleaning work.
Vibration Motor is in the original basis to add a vibrating head, made into a Dc Motor drive with a vibration motor. To produce the shaking force.
6V Dc Vibration Motor is introduced:
6V Dc Vibration Motor volume is generally greater than 15 mm, mainly used in massage chair, massage waist, handheld massager, etc.
Characteristics: small volume, strong vibration;
Features: small size, fast speed, stable performance, low price, can use battery drive,Can change the different materials of the pendulum head
Method of use: the best stable in horizontal plane, installed on the dc 6V Dc Vibration Motor output shaft parts, cannot use a hammer to knock, knock prone to press into the dc 6V Dc Vibration Motor drive, may cause damage to internal components, and cannot be used in the case of blocked.
Operating temperature range:
6V Dc Vibration Motor should be used at a temperature of -10~60℃.
The figures stated in the catalog specifications are based on use at ordinary room temperature catalog specifications re based on use at ordinary room temperature (approximately20~25℃.
If a vibration motor is used outside the prescribed temperature range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.Depending on the temperature conditions ,it may be possible to deal with them by changing the grease of the motor's parts.Please feel free to consult with us about this.
Storage temperature range:
Dc Vibration Motor should be stored ta a temperature of -15~65℃.
In case of storage outside this range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.
Service life:
The longevity of Dc Vibration Motor is greatly affected by the load conditions , the mode of operation,the environment of use ,etc.Therefore,it is necessary to check the conditions under which the product will actually be used .The following conditions will have a negative effect on longevity.Please consult with us should any of them apply.
â—Use with a load that exceeds the rated torque
â—Frequent starting
â—Momentary reversals of turning direction
â—Impact loads
â—Long-term continuous operation
â—Forced turning using the output shaft
â—Use in which the permitted overhang load or the permitted thrust load is exceeded
â—A pulse drive ,e.g.,a short break,counter electromotive force,PWM control
â—Use of a voltage that is nonstandard as regards the rated voltage
â—Use outside the prescribed temperature or relative-humidity range,or in a special environment.
â—Please consult with us about these or any other conditions of use that may apply,so that we can be sure that you select the most appropriate model.
when it come to volume production,we're a major player as well .each month,we rurn out 600000 units,all of which are compliant with the rohs directive.Have any questions or special needed, please contact us, we have the engineer group and best sales department to service to you Looking forward to your inquiry. Welcome to our factory.
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Shenzhen Shunchang Motor Co., LTD. , https://www.scgearmotor.com