The PQZR8-SN series soft starter, featuring an integrated bypass contactor, offers significant performance enhancements compared to standard AC contactors, including a 3x increase in performance, 2.6x improved heat dissipation, 25% greater safety, 20% energy savings, and a service life of up to 100,000 cycles. Its compact design is ideal for space-constrained motor control centers, simplifying installation.
This built-in bypass soft starter, with advanced control and protection features and closed-loop control for stabilized soft start torque, provides a user-friendly, efficient, and reliable motor start and run solution. Equipped with three internal relays, it eliminates the need for external contactors. Please specify your requirement for this built-in contactor model when ordering, as the standard version is an economic type.
+ Power Range: 11kW~400kW
+ Voltage Input: 3ph x380~415
+ Voltage output: 3ph x380~415
+ Rated Current: 22A~800A
+ Current Frequency: 50~60Hz (±2%)
+ Soft Starting Rise Time: 2~60s
+ Soft Stop Time: 0~60s
+ Current Limiting Multiple: 1.5~5.0 Ie
+ Initial Voltage: 30%~70% Ue
+ Cooling Method: Forced Air Cooling / Fan Cooling
+ Communication Method: RS485 Serial Communication
+ Acceleration time, s 1-120
+ Starting voltage 30-80%
+ Starting torque limitation 20-400%
+ Maximum operating current 50-200%
+ Protection class:IP20
+ Starts per hour: ≤30 times/hour
▌Built-in bypass Soft Starter Advanced Features:
▌Built-in Bypass Soft Starter Characteristics:
▌Protection Function:
☑Phase Loss Protection:
When any one of the three phases is open-circuited, the protection action time is less than 1 minute.
☑Phase Imbalance Protection:
When the three-phase imbalance K1 or K2 is greater than 10%, the protection action time is less than 10 minutes.
☑Overcurrent Protection:
When the motor is stalled, the protector operates with a delay of (±1s).
☑Overvoltage Protection:
When the power supply voltage Ue > 120%, the protection action time is less than 1 second.
☑Undervoltage Protection:
When the power supply voltage is (60%-75%) Ue, the protection action time is less than 60 seconds.
☑Reset Function:
Manual reset via the stop button.
☑Overtemperature Protection:
When the soft starter operates at an excessive temperature, the soft starter will automatically shut down and report a soft start overheat fault.
▌Application Range:
▌Environmental requirements:
If the altitude exceeds 1000 meters, the capacity should be reduced accordingly. For every 100 meters increase above 1000 meters, the current should be reduced by 0.5%; The relative humidity should not exceed 95% when the ambient temperature is between -10 ℃ and+40 ℃; No condensation, no flammable and explosive gases, no conductive dust, in a well ventilated indoor environment
Item | item | Item Description |
Input Power Supply | Input Voltage | Three Phase 380V-15% ~ 415+10% 50/60Hz |
Adaptive Motor | Squirrel-cage three-phase asynchronous motor | |
Starting Times | It is recommended not to exceed 30 times per hour. | |
Control Mode | Control Mode | 1) Operation panel control; |
2) Operation panel + external control; | ||
3) External control; | ||
4) External control + COM control; | ||
5) Operation panel + external + COM control; | ||
6) Operation panel + COM control; | ||
7) COM control; | ||
8) No start or stop operation. | ||
Start Mode | 1) Current-limiting start; | |
2) Voltage ramp start; | ||
3) Kick start + current-limiting start; | ||
4) Kick start + voltage ramp start; | ||
5) Current ramp start; | ||
6) Voltage current-limiting double closed-loop start. | ||
Stop Mode | 1) Soft stop; | |
2) Free stop. | ||
Protective Function | 1)Open loop protection for external instantaneous stop terminals; | |
2) Over-heat protection for soft starter; | ||
3) Protection for too long starting time; | ||
4) Input open phase protection; | ||
5) Output open phase protection; | ||
6) Unbalanced three-phase protection; | ||
7) starting over current protection; | ||
8) Running overload protection; | ||
9) Under voltage protection for power voltage; | ||
10) Over voltage protection for power voltage; | ||
11) Protection for fault parameter setting; | ||
12) Load short circuit protection; | ||
13) Auto restart or incorrect wiring protection; | ||
14) Incorrect wiring protection of external control stop terminals. | ||
Ambient Structure | Place to be used | Indoor location with good ventilation free from corrosive gas and conductive dust. |
Altitude | Below 3000M. It have to rise the rate power when the altitude is more than 3000M. | |
Ambient Temperature | -30~+55ºC | |
Ambient Humidity | ≤90%RH without dew condensation. | |
Vibration | <0.5G | |
Protection Class | IP20 | |
Cooling Pattern | Natural wind cooling. |
Model No# | Rated Current | Maximum Adaptable Motor Power | Circuit Breaker | Main Wiring Specifications | |
(A) | (KW) | Model | |||
PQZR8-SN11-T4 | 22 | 11 | NXB-40 | 10mm2 | Copper wire |
PQZR8-SN15-T4 | 30 | 15 | NXB-40 | 10mm2 | Copper wire |
PQZR8-SN18.5-T4 | 37 | 18.5 | NXB-50 | 10mm2 | Copper wire |
PQZR8-SN22-T4 | 45 | 22 | NXB-63 | 16mm2 | Copper wire |
PQZR8-SN30-T4 | 60 | 30 | NXB-80 | 25mm2 | Copper wire |
PQZR8-SN37-T4 | 76 | 37 | NXB-100 | 35mm2 | Copper wire |
PQZR8-SN45-T4 | 90 | 45 | NXB-125 | 35mm2 | Copper wire |
PQZR8-SN55-T4 | 112 | 55 | NXB-160S | 35mm2 | Copper wire |
PQZR8-SN75-T4 | 150 | 75 | NXB-180S | 50mm2 | Copper wire |
PQZR8-SN90-T4 | 180 | 93 | NXB-200S | 30×3 | Copper busbar |
PQZR8-SN110-T4 | 220 | 110 | NXB-250S | 30×3 | Copper busbar |
PQZR8-SN132-T4 | 260 | 132 | NXB-315S | 30×4 | Copper busbar |
PQZR8-SN160-T4 | 320 | 160 | NXB-350H | 30×4 | Copper busbar |
PQZR8-SN185-T4 | 370 | 185 | NXB-400H | 40×4 | Copper busbar |
PQZR8-SN200-T4 | 400 | 200 | NXB-500S | 40×4 | Copper busbar |
PQZR8-SN220-T4 | 440 | 220 | NXB-500H | 40×4 | Copper busbar |
PQZR8-SN250-T4 | 500 | 250 | NXB-630S | 40×4 | Copper busbar |
PQZR8-SN280-T4 | 560 | 280 | NXB-630H | 40×4 | Copper busbar |
PQZR8-SN315-T4 | 630 | 315 | NXB-700H | 40×5 | Copper busbar |
PQZR8-SN350-T4 | 700 | 350 | NXB-800H | 40×6 | Copper busbar |
PQZR8-SN400-T4 | 800 | 400 | NXB-1000S | 40×6 | Copper busbar |
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