technical solutions
main circuit as shown:
dust blower frequency control frequency control programme
front control room personnel by the user as needed speed operation knob sends a signal to high voltage inverter, to achieve speed control. users can also be based on the frequency signal dcs system automatically controls the high voltage inverter output.
inverter "remote / local" conversion control options, when the drive is "remote / local" switching control selection switch to "remote" position, the control to the dcs control system, when the drive is "remote / local" conversion control selection switch to "in situ" position, the drive control to the panel buttons or keys.
technical parameters
motor parameters:
model rated power rated voltage rated current rated power factor
yrkk710-6 1800kw 6kv 218a 0.81
drive specifications:
input voltage: three-phase ac rms 6kv ± 10%
input frequency: 50 ± 5hz
output voltage: three-phase sinusoidal voltage 0-6kv
output frequency: 0-50hz
frequency resolution: 0.01hz
acceleration time: according to process requirements set
q. deceleration: set according to process requirements
frequency setting mode: two low speed can be adjusted within the range of 0-50hz
fault diagnosis and detection: automatic detection, automatic positioning
net side power factor: 0.95 (at high speed)
overload protection: 150% (l allow minutes every 10 minutes), 180% immediate protection
degree of protection: ip21
humidity: 90% non-condensing
production process (output frequency variation):
low-speed (20min frequency 20hz) - high-speed (40min frequency 47hz)
the actual saving effect test:
line current conditions into the line active axis average temperature average saving rate
frequency 210a 1588kw 70 ℃ 29%
frequency 110a (high-speed) 1429kw 42 ℃
7a (low) 40kw
acceptance report:
