1. Anti-electric shock measures at the structural design level
Bathroom Heater adopts a variety of structural designs to ensure the safety of users when there are water stains on the surface or when operating with wet hands. First of all, the design of the shell plays a key role. Many Bathroom Heaters use a sealed shell structure, which can prevent moisture from entering the internal circuit. For example, the shell of some heaters uses seamless splicing technology to reduce the gaps where moisture may penetrate. At the same time, the shell material itself has insulating properties, such as high-quality plastic materials, which have very high insulation resistance. Even if there are water stains on the surface, it can prevent the current from being conducted to the surface of the shell.
In terms of internal circuit layout, the heater adopts an isolated design. That is, the live parts are effectively isolated from the contactable parts. For example, special insulating brackets and isolation covers are used to separate the live parts such as heating elements and wires from the shell and the external contactable parts. Even in a humid environment, even if some water vapor condenses or water stains splash in, it is difficult for the current to be conducted to the parts that the user may touch.
2. Measures at the electrical protection level
From the perspective of electrical protection, most Bathroom Heaters are equipped with a variety of anti-electric shock protection devices. Among them, grounding protection is a common one. The metal shell of the heater will be connected to the ground wire. If leakage occurs, the current will flow into the earth through the ground wire instead of through the human body, thereby ensuring the safety of the user. The leakage protection device is also an important part. When a leakage current is detected in the circuit (generally set to a few milliamperes to tens of milliamperes), the leakage protection device will quickly cut off the circuit. For example, when the user touches the surface of the heater with wet hands and the heater leaks, the leakage protection device can act in a very short time (usually within 0.1 seconds) to prevent the user from being electrocuted.
In addition, some heaters also use a double insulation design. This means that in addition to the basic insulation layer, there is an additional layer of insulation protection. Double insulation can greatly improve the safety of the heater in a humid environment. Even if the basic insulation layer is damaged to a certain extent, such as being scratched by a sharp object, the outer layer of insulation can still play a protective role to prevent the user from being electrocuted.
3. Guarantee of safety standards and tests
Bathroom Heaters need to follow strict safety standards. During the production process, they must undergo a series of tests to ensure safety in the presence of water stains or wet hand operation. For example, a withstand voltage test is conducted to ensure that the heater will not leak electricity when subjected to a certain voltage. At the same time, there is also a humid environment simulation test, which places the heater in a high humidity environment to simulate the situation of water stains on the surface and wet hand operation to check whether it will leak electricity or other safety problems. The implementation of these tests and standards fundamentally guarantees that users will not be electrocuted in various possible dangerous situations.
