Variable Frequency Drive | Bear-75 | VFD | Variable Speed Drive

Bear 75 Variable Frequency Drive – 75 HP / 55 kW

Variable Frequency Drive - Bear

Bear 75 Variable Frequency Drive – 75 HP / 55 kW

Compared with traditional variable speed drives, the Bear 75 VFD series water pump dedicated variable frequency drive is more efficient and easier to install and operate. In addition, IP65 and IP20 protection level, built-in pump control and protection function into VFD, no need for extra relay, PLC, Easy wire connection, decrease troubleshooting, save raw material, maintenance, and human cost. As a result, it is an ideal variable speed pump drive for new and retrofit applications.

The Bear 75 VFD variable frequency drive can be used with any standard AC motor, IP65 protection rating Bear 75 VFD could install on the motor directly, no need for extra PLC, relay, contactors, and control box. The built-in application software makes it the most convenient driver for debugging, programming and operation.

The professional control and protection function for the pump and motor, the soft start and stop, incredibly improve the service life of the pump, motor, and pipe. All these features make this compact and easy-to-use drive reliable and energy-saving up to 70%, suitable for almost any application.

For additional variable frequency drive models, visit our VFD page.

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  • Efficient Transformation
  • Efficient Configuration
  • Efficient Energy Use
  • Economy
  • Easy to debug and operate
  • Easy to install

Variable Frequency Drive Technical Specs

Model Bear 75 VFD                   Horsepower 75 hp
Rated Data  General tech. specifications
Input Power Factor 95%
 Number of phases  AC 3PH  Control mode V/F control, non-PG vector control (SVC) PG vector control (FVC)
Rated power (KW) 55 Efficiency 98%
 Voltage range(V)  400~500 Sound pressure  50dB
Frequency range HZ) 47~63 Power loss (KW) 1.1
Rated input  102 Speed adjusting  1:100(SVC) 1:1000(FVC)
current(A) range
 Power factor  95% Speed control  ±0.5%(SVC) ±0. 02%(FVC)


V/F control

Line, multiple points, square V/F curve

, V/F separation number

Number of phases   AC 3PH  Start torque   0.5Hz/100 %
 Rated Power (KW)  55  Torque boost Automatic torque boost; manual torque boost 0.1~30%
 Voltage range(V)  0~500V  DC brake

Supports starting and stopping DC


 Frequency range (Hz)  0~600  Traverse control Traverse controls l function: multiple triangular pulse frequency control
Rated output  99 Fixed length  Setting length control
current(A) control


Power factor




Timing control


Setting time range:0~6500min

 Input & Output options:1AC 220V±15%,

3AC 220V±15 %, 3AC 380V±15%,

3AC 660V±10 %, 3AC 1140V±15 %

 Overload  120% rated current 60s, 150% rated current 3s


Input terminals

1. 4 programmable digital inputs,

2. voltage input 0~10VDC or current input 0~20mA



 1.  4 relay outputs

2. 1 analog output: voltage output

0~10 VDC or current output 0~20mA

Common DC bus: Common DC bus function: multiple inverters can use a common DC bus
Operation command mode: Keypad control, Terminal control, Serial communication control
Acceleration and deceleration mode: Line or S-curve, 4 types of acceleration/deceleration time with the range of 0.0~6500. 0 s

Related Equipment

The Horton 25 is a 56 kW / 70 kVA prime power, multi-voltage, sound attenuated, mobile generator. They are powered by an Isuzu Tier 4 Final, liquid-cooled, four-cylinder diesel engine. The units consist of an alternator, diesel engine, cooling system, electrical distribution, and control systems – all enclosed within a sound attenuated enclosure fabricated from powder-coated galvanized steel.

88HP Continuous Power Output

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