To meet the needs of installing and removing 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 EQJ 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, good performance, and is highly favored by users.
The EJK-Ⅰ DC adjustable bolt heating control cabinet, used in conjunction with the DC bolt heater, features stable and adjustable output DC voltage (0-220V adjustable), multiple output channels (up to 12 loads), high output power, safety, and reliability.
II. Main Technical Parameters
Model
Rated Power
(KW)
Rated Voltage
(V)
Output Current
(A)
Output Voltage
(V)
Number of Output Channels
Dimensions
(mm)
EQJ-Ⅰ30380±10%3×20045-556路600×800×1400EQJ-Ⅱ60380±10%3×40045-5512路600×800×1400EJK-Ⅰ30380±10%3×450-220V×36路750×950×1200EJK-Ⅱ60380±10%3×900-220V×312路750×950×1200
III. Usage Precautions
1. The control cabinet shell must be reliably grounded.
2. The phase and neutral wires between the bolt heater plug and the cabinet socket must be correctly connected; misconnection is strictly prohibited.
3. When installing or removing the bolt heater, the power switch must be turned off. For EJK series control cabinets, the voltage adjustment and indicator should be at the minimum position; for EQJ low-voltage control cabinets, voltage shifting with load is strictly prohibited.
4. When connecting loads, pay attention to the balance between the three phases.
5. If connectors are damaged, they must be replaced with identical ones.
6. Special bolt heaters need to be manufactured according to the specific dimensions of the bolts. When ordering, the buyer must provide: a. bolt outer diameter; b. bolt hole diameter; c. total bolt length; d. nut length; e. information on the matching heating control cabinet.
