CHT

CHT chopper di frenatura

Low Voltage Braking Chopper: Brochure

Low voltage Braking Chopper


The braking chopper CHT is designed for applications where large amounts of energy are required to be dissipated from the DC bus. SECOM's available range of CHT brake choppers covers currents ranging from 100A up to 1500A.
CHT units are available in three different mechanical sizes, based on the current required; the mechanical drawings of the various sizes are shown below.

Thanks to the removable mounting bracket present in each unit, the low voltage brake chopper can be mounted in different positions, depending on the available space. Furthermore, the brackets can be positioned in each of the four corners of the unit and, consequently, mounted in the direction of the width or lenght, as desired.
The air intake of the cooling fan is located at the bottom of the unit; it is important to remember that the air should be clean as there is no filter.
The enclosure design of the CHT unit ensures that there are sufficient openings for proper airflow.
A periodic maintenance is required, in order to check and prevent blockage of the ventilation grille and provide for correct ventilation in the cabinet where the CHT is installed.

Technical data
Ambient condition
Altitude 1000 m. a.s.l.
Climate Moderate
Min./Max. operating temperature 0 ÷ 40°C
Storage temperature 0 - 50°C
Relative humidity 10 ÷ 90%
Dimensions and weight
Height 550/725/1398 mm
Width 243mm
Depth 500 / 650 mm
Weight 35 - 80 kg
Electrical data
Semiconductors IGBT
Cooling system Forced air
Rated current 100 - 1500 A
Supply voltage 400 - 1150 Vdc
Braking Chopper IGBT
CHT up to 500 A
Control supply voltage 230 Vac
Frequency 50/60 Hz
AC current 0.5 A
Electronic power supply (optional) ± 24Vdc
DC current 2 A
Fan supply voltage 1 24 Vdc
Fan current 1 2 A
Fan supply voltage 2 (alternative to 1) 230 Vac
Fan current 2 0.5 A

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