There are several possible reasons for the sudden power outage of the butyl adhesive coating machine for insulating glass:

1. 电源故障：检查一下是否有电源线松动或者插头接触不良，也可以尝试将插头接到其他正常的电源上进行测试。

1. Power failure: Check if there is any loose power cord or poor plug contact, or try connecting the plug to another normal power source for testing.

2. 断路器跳闸：检查一下断路器是否跳闸，如果是，请重置断路器。

2. Circuit breaker tripping: Check if the circuit breaker has tripped, and if so, reset the circuit breaker.

3. 过载保护：如果使用过程中负荷过大，可能会触发过载保护，导致机器断电。在使用机器时，请确保不要超过其额定功率。

3. Overload protection: If the load is too high during use, it may trigger overload protection and cause the machine to power off. When using the machine, make sure not to exceed its rated power.

4. 故障电路：如果以上情况都排除了，可能是机器内部出现故障电路。这时候最好请专业的维修人员进行检修，避免自行修理造成更大的损坏。

4. Fault circuit: If all the above conditions are eliminated, it may be a faulty circuit inside the machine. It is best to hire professional maintenance personnel for maintenance at this time to avoid self repair causing greater damage.

总之，如果中空玻璃丁基胶涂布机突然断电，建议先检查电源、断路器和负荷情况，如未解决问题，最好求助于专业的维修人员进行修理。

In short, if the butyl adhesive coating machine for insulating glass suddenly loses power, it is recommended to check the power supply, circuit breaker, and load condition first. If the problem is not solved, it is best to seek professional maintenance personnel for repair.