How to properly use the heating tape of a solar water heater

Introduction How to properly use the heating tape of a solar water heater. A single motor moisture resistant heating tape is installed at the end of the motor drive winding. Two moisture resistant motor heating tapes, one is installed at the end of the drive.

How to properly use the heating tape of a solar water heater

A single motor moisture resistant heating tape is installed at the end of the motor drive winding. Two moisture-proof heating tapes for the motor, one is installed at the driving end and the other is installed at the non-driving end. -driving end. There is no need to surround the stator, tie it with polyester tape, its wires are fixed in the junction box, then dipped in paint and dried.

In order to prevent the insulation resistance of the motor winding coil from being reduced due to moisture absorption when the motor operates discontinuously, the motor winding The engine must be properly heated to a temperature above 5°C. higher than ambient temperature to prevent condensation on the motor coil prevents the winding coil from becoming wet and ensures normal motor starting.

Selection of a heating belthumidity resistant for motors:

(1) The principle of selection of the heater power is as follows: when the motor is out of service, the temperature of the winding of a closed circuit The motor should be 5K higher than ambient temperature. The heat released is entirely absorbed without taking into account external influences.

(2) Heating belt length selection: Heating belts cannot overlap, and the length of the heating belt must be greater than or equal to 90% of the circumference and at least 30mm less than the circumference. For example, for H500 motor, the circumference of 4 poles and 6 poles is 2.402-2.543 m, and the length of heating belt is 2.27-2.37 m.

Additional information:

It is strictly forbidden to mix steam tracing and electric heating in 1. When installing thisheating inture, the insulating layer should not be damaged, and it should be close to the heated object to improve thermal efficiency. If the heated body is a non-metallic body, use tape to increase the contact heat transfer area and secure it with nylon ties. It is strictly forbidden to tie it with metal wires. The fluid at the flange is easy to leak, so avoid directly below when wrapping the heating tape.

One end of the heating tape is connected to the power supply, and the core of the other end is strictly prohibited from shorting or contacting conductive substances and cutting it “V” shaped. hermetically sealed with a matching head; in waterproof and explosion-proof situations, it should be matched with the explosion-proof junction box and terminal block. A silicone rubber gasket should be usedlized after wiring (the protective layer should be peeled off 10cm at the heating tape terminal to avoid short circuit);

The insulation of heating points should be measured one by one during installation . The shielding layer must be grounded and insulated. The resistance value is as small as 20 MΩ (1000 V DC). Select the double-pole power outage and leakage protection circuit breaker according to the voltage, current and other parameters of each electric heating circuit. When steam cleaning is required to descale the pipeline, attention should be paid to cleaning first and then installing the electric heating tape. If it is necessary to clean the line every year, maintenance should be designed and installed according to specific circumstances.

Baidu Encyclopedia - Heating area

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