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In the last several decades the single-phase AC motors have utilized mechanical centrifugal switches to switch from start windings to main windings which have problems like tolerance build-up, mechanical fatigue, vibration, electric spark, etc. Under normal environment motor failures often come from the degradation of the mechanical switches. Electronic Centrifugal Switch (ECS) is a reliable solid-state switch that would duplicate the functions of the conventional centrifugal switch with additional benefits of the electronic device. Speed voltage /current and phase are constantly monitored by the ECS, and the internal ASIC will control the switch On or Off. At the cut-Off point, the motor speed normally accelerates to 60~80% of the synchronous speed (see Figure 1 torque-speed curve). When the motor encounters overload conditions or the motor speed decreases to approximately 20~40% of the synchronous speed, ECS reconnects the start CAP.
Parameter | Unite | Package (mm) | |
---|---|---|---|
Rated Voltage | 115V/230V | V AC | |
Max. Start Peak current, 20ms,TC=25℃ | 100(RECS-105/205) | A | P: 72L*31W*23H |
200(RECS-120/220) | A | P: 72L*31W*23H S: 52L*50W*24H | |
400(RECS-140/240) | A | P: 72L*31W*23hH | |
600(RECS-160/260) | A | C: CAP Case 46Dia*86L | |
Max. Start Peak current, 3.0S, TC=25℃ | 30(RECS-105/205) | A | |
60(RECS-120/220) | A | ||
120(RECS-140/240) | A | ||
180(RECS-160/260) | A | ||
Initial switch-on delay time | 80 | mS | |
Restart delay time, TC=25℃ | 5 | S | |
ON/OFF Freq. | 0.2 | Cycle/S | |
Ambient air temperature | 0—70 | ℃ | |
Dielectric strength, between case and lines | ≥2500 | V DC |
Model Type | Volt Range | Max peak current | Imax(3s) | Power Range |
---|---|---|---|---|
RECS-205P | 160~264VAC | 30A | Ima≤15A | 0-550W |
RECS-220P | 160~264VAC | 60A | Ima≤35A | 600-2200W |
RECS-105P | 85~132VAC | 30A | Ima≤15A | 0-330W |
RECS-120P | 85~132VAC | 60A | Ima≤35A | 300-1100W |
RECS-140P | 85~264VAC | 60A | Ima≤35A | 110V 300-1100W 220V 600-2200W |