Hanbell RC2-D, Техническое руководство

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RC2-D Technical Manual
Figure 4-2 Y-Δconversion time diagram
2) Y-Δ startup features

The starting current of Y shape connection is 1/3 of the locked rotor ampere. The starting torque
of Y shape connection is 1/3 of the locked rotor torque.

The rotating acceleration of the electrode is reduced when the overload starts, so the compressor
needs to start with light load.
Note: In addition to Y-Δ startup, if there is a need of soft start or reactance step-down start, please
contact Hanbell for further information.
4.2 Start-up limit
Hanbell compressor is started by Y-Delta, and the compressor must be at the lowest load when starting.
1) Compressor start-up

RC2-100D~580D compressor should not start more than 6 times per hour, and RC2-620D~930D
compressor should not start more than 4 times per hour.

When starting, the compressor should be at the lowest load (25% or 33%).

In case of low ambient temperature, the oil heater must be powered on and heated 6 hours before
the compressor start to maintain the oil temperature.

When starting, Y connection time is generally 4±1 s, and the max allowable time of Y switching to
△
connection is 40ms. The actual Y–
△
conversion time can be adjusted according to the actual
working conditions on site, the longest Y–
△
conversion time is no more than 7 seconds.

When starting, the power supply voltage shall not exceed ±10% of the rated voltage.
2) Power limit

Long-term operation: Rated voltage ±5%.