Product Details

Brief Introduction

Engineered for variable-frequency drive (VFD) compatibility, the YRKK-800-4 overcomes limitations of standard small AC induction motor designs under non-sinusoidal power. Its electromagnetic architecture minimizes stator/rotor resistance to reduce fundamental copper losses, counteracting harmonic-induced heating from PWM inverters-which typically elevate temperatures by 10%-20%.

 

Critical enhancements include reinforced F-class (or higher) insulation systems resistant to repetitive voltage spikes and steep dv/dt stresses inherent to carrier frequencies (kHz range). Structural adaptations address VFD-specific challenges: isolated cooling fans ensure consistent airflow across speed ranges, suppressing hotspots during low-speed operation. This small AC induction motor strategically increases inductance to dampen high-order current harmonics without compromising impedance matching throughout the torque-speed curve. The rotor design mitigates skin effect losses near synchronous speeds, while optimized slot-pairing reduces stray load losses exacerbated by waveform distortion.

 

Unlike conventional units vulnerable to accelerated insulation aging under PWM voltage surges, the YRKK-800 maintains operational integrity through rigorous dielectric protection at turn-to-turn and ground insulation levels. Its holistic design ensures sustained efficiency and thermal stability, making this small AC induction motor ideal for precision speed-controlled applications demanding reliability under harmonic-rich power conditions.

 

Main Technical Parameters

Frame:	H800
Power Scope:	3150-5000kW
Voltage:	3000V, 3300V, 4160V, 6000V, 6600V, 10000V, 11000V
Frequency:	50Hz, 60Hz
Number of Poles:	4P
Speed	1500rpm
Cooling Mechod	IC611
Protection Grade	IP54, IP55
Insulation Class	F(155℃), H(180℃)
Duty:	S1, S4, S5, S6, S9
Mounting Type	B3/V1

 

 

---

Why choose Simo Brand YRKK series of Motor?

 

YRKK IP55 Slip Ring HV Motor is a product that has been proven in the market for many years, it is compact and lightweight. Because the vibration is small and the noise is low, it will not have a huge impact on the working environment. And its high efficiency and energy-saving features can also further save costs. Our motors have a variety of installation methods to meet the different needs of customers and the environmental requirements of product use. In addition, our products use high-strength bodies, which are not only tough but also impact-resistant. Anti-rust coating on the surface can further extend the service life.