Bolt Electric Heater Temperature Control Cabinet - Yangzhou Darui
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I. Purpose and Features
To meet the needs of loading and unloading bolts in high, medium, and low-pressure cylinders of steam turbines and improve work efficiency, our company has developed and produced two major series with over 10 varieties of bolt heating devices. The WQJ steam turbine bolt low-voltage heating device has been used by many power plants. This device is safe, reliable, easy to operate, has a long service life, and is highly effective, making it popular among users.
The ZJK-1 DC adjustable bolt heating control cabinet, used in conjunction with DC bolt heaters, features stable and adjustable DC output voltage (0~220V adjustable), multiple output channels (up to 12 loads), high output power, and is safe and reliable.
II. Usage Precautions
1. The control cabinet shell should be reliably grounded.
2. The phase and neutral wires between the bolt heater plug and the cabinet socket must be connected correctly; incorrect connections are strictly prohibited.
3. Bolt heater must be disconnected from the power supply when loading or unloading. The voltage adjustment and indication of the ZJK-series control cabinet should be at the minimum position; the WQJ low-voltage control cabinet is strictly prohibited from shifting voltage under load.
4. When connecting loads, pay attention to the balance between the three phases.
5. If connectors are damaged, they must be replaced with identical parts.
6. Special bolt heaters need to be manufactured according to the specific geometric dimensions of the bolts. When ordering, please provide: a. bolt outer diameter; b. bolt outer diameter; c. total bolt length; d. nut length; e. the matching heating control cabinet situation.
III. Model, Specifications, and Parameters are as specified in the table below:
Approved by the Ministry of Machinery and Electronics Industry of the People's Republic of China on 1988-07-20, implemented on 1989-07-01
Note 1: The electric heater parameters listed in this table are applicable to bolts with a center hole diameter of d=22.6±0.2mm. For electric heaters that do not conform to the center hole diameter and specifications listed in this table, they shall be determined by the user and the manufacturer.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
