ERC-244  断路器  对电源线路及电动机等实行保护

品牌： TERASAKI 

型号：ERC-244

ERC-244断路器是指能够关合、承载和开断正常回路条件下的电流，并能关合、在规定的时间内承载和开断异常回路条件（包括短路条件）下的电流的开关装置。ERC-244断路器可用来分配电能，不频繁地启动异步电动机，对电源线路及电动机等实行保护，当它们发生严重的过载或者短路及欠压等故障时能自动切断电路，其功能相当于熔断器式开关与过欠热继电器等的组合。而且在分断故障电流后一般不需要变更零部件。目前，已获得了广泛的应用。

判断一个断路器是否正常工作，可以通过以下步骤进行：

1. 观察外观：检查断路器是否有损坏或异常，例如外壳破裂、接线端子松动、电线烧焦等。

2. 检查操作：按下断路器的开关，观察是否能够正常闭合和断开。如果无法正常操作，可能是由于开关损坏或电路故障。

3. 测量电压：使用电压表或万用表测量断路器两端的电压，确保电压在正常范围内。如果电压过高或过低，可能是由于电路故障或电源问题。

4. 检查电流：使用电流表或钳形表测量通过断路器的电流，确保电流在正常范围内。如果电流过高或过低，可能是由于电路故障或负载问题。

5. 检查接地：使用接地电阻测试仪测量断路器的接地电阻，确保接地良好。如果接地不良，可能会导致漏电或触电事故。

通过以上步骤的检查，可以判断一个断路器是否正常工作。如果发现异常，应及时更换或维修断路器，以确保用电安全。

ERC-244  断路器  对电源线路及电动机等实行保护

Brand: TERASAKI

Model: ERC-244

ERC-244 circuit breaker refers to a switching device capable of turning off, carrying and breaking current under normal circuit conditions, and of turning off, carrying and breaking current under abnormal circuit conditions (including short circuit conditions) for a specified period of time. ERC-244 circuit breaker can be used to distribute electrical energy, start asynchronous motors infrequently, protect power lines and motors, etc., when they occur serious overload or short circuit and undervoltage faults can automatically cut off the circuit, its function is equivalent to the combination of fuse switch and over and under thermal relay. And it is generally not necessary to change the parts after breaking the fault current. At present, it has been widely used.

To determine whether a circuit breaker is working properly, you can perform the following steps:

1. Check the appearance of the circuit breaker. Check whether the circuit breaker is damaged or abnormal, for example, the shell is broken, the wiring terminal is loose, and the cable is charred.

2. Check operation: Press the switch of the circuit breaker and check whether it can be closed or disconnected normally. If it does not operate properly, it may be due to a damaged switch or circuit fault.

3. Measure the voltage: Use a voltmeter or multimeter to measure the voltage at both ends of the circuit breaker and ensure that the voltage is within the normal range. If the voltage is too high or too low, it may be due to a circuit fault or a power supply problem.

4. Check the current: Use an ammeter or clamp meter to measure the current through the circuit breaker and ensure that the current is within the normal range. If the current is too high or too low, it may be due to a circuit fault or load problem.

5. Check the grounding: Use the grounding resistance tester to measure the grounding resistance of the circuit breaker and ensure that the circuit breaker is properly grounded. If the ground is not properly grounded, it may lead to leakage or electric shock.

By checking the above steps, you can determine whether a circuit breaker is working normally. If an anomaly is found, the circuit breaker should be replaced or repaired in time to ensure the safety of electricity use.