Commonly used infrared remote controls are not remote operation, because the user of the infrared remote controls is at the working site of the appliance, and can view the reaction and working status of the appliance after the infrared remote controls is operated in real time. If the infrared remote controls is part of a communication system, a sound control system or a bus system, in this case, the initiator of control mainly completes the control through the communication system, the sound control system or the bus system. Generally speaking, the initiator of control sends instructions to a separate infrared controller through the communication system, the sound control system or the bus system, and then the infrared controller transmits infrared remote control information to the appliance to complete the operation; in this case, this set of control systems can be considered as remote operation. Example: The infrared remote controller used for ordinary air conditioners is not remote operation; there is a centralized controller on the market currently that can be placed in the core position of a building. Users can control it to transmit infrared signals through WIFI. The transmitted infrared signals can control any electrical products in the room. This is a remote operation.
combined appliance: appliance incorporating heating elements and motors. We know that this standard mainly protects against the following five types of dangers, which are electric shock, mechanical damage from moving parts, thermal damage (such as burns), fire damage, chemical and biological damage. Generally speaking, thermal damage is caused by electric heating elements, and mechanical damage…
room temperature: ambient temperature specified in the general conditions for the tests.Note 1 to entry: The ambient temperature is specified in 5.7. This item comes from standard IEC 60335-1:2020 edition 6.0. In commented version (CMV) of the official standard IEC 60335-1:2020 edition 6.0 allows the user to identify the changes made to the previous edition…
intentionally weak part: A part intended to rupture under abnormal operating conditions to prevent the occurrence of a condition that could impair compliance with this standard.NOTE: Such a part may be a replaceable component, such as a resistor or capacitor, or a part of a component to be replaced, such as an inaccessible thermal link…
We are discussing here the second structure of the PTC heating element, PTC heating element structure please refer to the explanation of its definition. How is the creepage distance of the functional insulation at the location of the red circle in Figure 1 determined? We all know that NOTE 1 of TABLE 18 section has…
