Soft starter, modularization design, DSP controlled high quality material and parts/components
PRR Soft Stater Principle introduction Three reverse-parallel connection SCR modules are adopted as power element. The soft starter can pick up synchronization signal from input voltage sampling, and realize feedback fuzzy control by output current sampling, trace the phase automatically and control phase displacement angle. Voltage can thus be increased step by step, and startup current will be under control. After startup, the bypass contactor will short-circuit the SCR. The motor will finally be driven into the electricity network for operation.
Control power supply | AC 380V±20%, 50/60Hz |
3-Phase power supply | AC 380V±20%, 50/60Hz |
Nominal current | 30A-630A, totally 16 kinds of rated currents |
Motor power | 15315KW(rated voltage 380V) |
Applicable motor | Common squirrel cage type asynchronism motor |
Startup mode | Voltage kick soft startup; current limiting startup (150~400%, adjustable); voltage ramp startup (1~180seconds, adjustable) |
Stop mode | Free stop; soft stop (1~180seconds , adjustable) |
Relay output | Delay running output; fault output; full voltage output (by pass) [contact dot: 5A, 250VAC] |
Startup frequency | for frequent or infrequent startup; Advise: not exceeding ten times per hour |
Protection function | Phase loss of input, over-load, short circuit, over-heating, and etc. |
Safety degree | IP20 |
Cooling mode | Cooling naturally |
Installation mode | Hanging mode |
Environment conditions | Environment temperature:-10~50 Relative humidity:≤95%(20±5) Free from flammable gas, explosive gas and corrosive gas, free from electric dust, to be installed indoors with good ventilation Vibration below 0.5G If the altitude is above 2000m, the capacity should be decreased accordingly for application. |
