1. What is the maximum length of use of electric heat tracing
The maximum length of the electric trace is the length of the electric trace that can be driven by a power point. The maximum length of the self-limiting temperature electric cable is determined based on the size of a certain specification of the circuit breaker and then considering a certain inrush current, and the maximum length of the self-limiting temperature electric trace is generally 100 meters.
The other kind of constant power electric tropical, constant power, high heating temperature, high temperature resistance. When a constant power electric trace is used, as the length increases, the voltage drop at the end of the electric trace will also increase. According to the relevant standards of electric heat tracing, the power reduction at the end of the constant power electric heat trace shall not exceed 20% of the input terminal. Therefore, the length of the constant power electric cable is specified as the maximum length of the constant power cable.
Second, self-controlled temperature electric heat tracing pipeline thawing medium, how to calculate the thawing time?
The working principle of self-controlled temperature electric heat tracing:
The self-controlled temperature electric cable has PTC resistance characteristics, and as the temperature of the pipeline increases, the output power decreases, and the external heat dissipation is constantly changing due to the different temperature of the pipeline. Therefore, the calculation method is more complicated. Specific data is needed, and experiments can be taken to test specific times. In the actual test, there will be some errors in the test due to the different ambient temperature.
Self-controlled temperature electric heat tracing
Third, does the self-controlled temperature trace need a temperature controller?
The self-limiting electric heat trace has a PTC resistance positive temperature effect, and the temperature of the electric heat trace system can be self-adjusted. If precise temperature control is required, a thermostat can be used. The use of thermostat can effectively adjust the electric heating system, save unnecessary energy consumption, and facilitate automatic operation and management.
4. Why should constant power electric heat tracing not overlap when installed, and why can self-controlled temperature electric heat trace?
Constant power electric heating power is constant, high heating temperature, high temperature resistance, if overlapping installation, temperature rise, will produce overheating phenomenon and even burn out the electric tropics. Due to its self-temperature control characteristics, self-controlled electric heat tracing will not overheat even if it overlaps.