Model: NL-JLDJ-2
The problem
Air-conditioner blowers, washing machines and range hoods all run PMSM or BLDC motors with drives, yet a single conventional dyno measures only the bare motor: drive input-output efficiency, harmonics and protection behaviour stay invisible, and samples from 20W to 7500W span three orders of magnitude that no single bench covers. When torque, speed and electrical data are not captured synchronously, acceptance curves simply do not line up.
Capability
Two benches run independently on one control system without mutual influence, each with 20 percent test margin. Bench A uses a hysteresis dyno for 20-1000W, rated torque 0.18-2 Nm and 0-8000rpm; bench B uses an electric dyno for 120-7500W, rated torque 1.2-20 Nm and 0-12000rpm. Targets cover PMSM, BLDC and AC motors for air-conditioner fans, table fans, washing machines and range hoods. Accuracy reaches 0.2 percent F.S. on torque with frequency output, 0.1 percent plus 1rpm on speed, 0.2 percent on voltage, current, power, power factor and efficiency, class 0.5 on temperature with 0.1C resolution and 0.1 degrees on rotor position via encoder. A 20kVA programmable AC source feeds the drive with single or three-phase 20-600V at 50/60Hz and up to 30A. Ten test programmes cover no-load, locked-rotor torque and current, efficiency maps, controller drive characteristics, temperature rise, overspeed, voltage fluctuation (plus or minus 20 percent in 5s), drive protection, maximum operating speed and rated power. Two 16-channel acquisition units accept PT100, type-K thermocouples, 0-10V and 4-20mA per channel with 8DI/8DO, shipping with ten PT100 and fifteen type-K probes merged into load characteristic curves. Mechanically the rail-mounted stage adjusts in three axes with diaphragm couplings, factory concentricity within 0.05mm, vibration monitored at 5mm/s and a disc brake for instant stops. The electric dyno regenerates in four quadrants at power factor 98 percent and efficiency 95 percent with bumpless constant-torque and constant-speed switching. Software offers manual, semi-auto, automatic and programmed modes with curve comparison, stored motor parameters and Word/Excel/PDF reports over USB, LAN, RS232/485 and TCP/IP.
Key specifications
- Configuration: bench A hysteresis dyno plus bench B electric dyno, independent operation
- Bench A range: 20-1000W; 0.18-2 Nm; 0-8000rpm
- Bench B range: 120-7500W; 1.2-20 Nm; 0-12000rpm
- Targets: PMSM, BLDC and AC motors (AC fans, washers, range hoods)
- Torque accuracy: 0.2 percent F.S., frequency output
- Speed accuracy: 0.1 percent plus 1rpm
- Electrical accuracy: 0.2 percent on voltage, current, power, PF, efficiency
- Temperature and position: class 0.5 with 0.1C resolution; rotor position 0.1 degrees
- Programmable source: 20kVA, 1/3-phase 20-600V, 50/60Hz, 0-30A
- Test programmes: no-load, locked rotor, efficiency, drive characteristics, temperature rise, overspeed, voltage fluctuation, protection, maximum speed, rated power
- Acquisition: two 16-channel units (PT100, type K, 0-10V, 4-20mA) plus 8DI/8DO
- Mechanical: concentricity within 0.05mm, vibration within 5mm/s, disc brake
Applications
Drive-system matching for air-conditioner blower motors; type and routine testing at appliance motor plants; efficiency-map calibration and protection validation for drive suppliers; university and third-party laboratory research on motor drive systems
About the manufacturer
Guangdong Endurance Electronic Equipment Co., Ltd provides non-standard customization, drawing confirmation, factory acceptance, on-site installation and commissioning, operation training and long-term technical service; 12-month warranty and long-term spare parts supply. Tel: 0760-88500902 / 13416787649. Web: en.zsnaili.com.