User Manual of EM730 Series Inverter The recommended power and resistance for the braking resistor of the EM730 series inverter are given in the table below. The recommended resistor power is calculated based on the braking rate (10% to 20%). It is for reference only. If the inverter is used in the case of frequent acceleration/deceleration or continuous braking, the power of the braking resistor needs to be increased. The user can change the value according to the load conditions, but within the specified range. ★ The wires listed above refer to the outgoing wires of a single resistor. If resistors are connected in parallel, the bus should be enlarged accordingly.
The withstand voltage of the wires should be AC 300V or above for the single-phase model and AC 450V or above for the three-phase model. Cables should be resistant to 105 ℃ . 10.2 Braking unit For the EM730 series inverters (EM730-045-3 and above), use our BR100 series braking units (power range: 18.5 ~ 160kW). The models of our braking units are as follows.
365 Inverter Model Motor (kW) Resistance (Ω) Resistor Power (W) Wire (mm2) Connected to Resistor EM730-0R4-2B 0.4 ≧360 ≧200 1 EM730-0R7-2B 0.75 ≧180 ≧400 1.5 EM730-1R5-2B 1.5 ≧180 ≧400 1.5 EM730-2R2-2B 2.2 ≧90 ≧800 2.5 EM730-0R7-3B 0.75 ≧360 ≧200 1 EM730-1R5-3B 1.5 ≧180 ≧400 1.5 EM730-2R2-3B 2.2 ≧180 ≧400 1.5 EM730-4R0-3B 4 ≧90 ≧800 2.5 EM730-5R5-3B 5.5 ≧60 ≧1000 4 EM730-7R5-3B 7.5 ≧60 ≧1000 4 EM730-011-3B 11 ≧30 ≧2000 6 EM730-015-3B 15 ≧30 ≧2000 6 EM730-018-3B 18.5 ≧30 ≧2000 6 EM730-022-3B 22 ≧15 ≧4000 6 EM730-030-3B 30 ≧10 ≧4000 6 EM730-037-3B 37 ≧10 ≧6000 6 Model and specification Application Minimum Resistance (Ω) Average Braking Current I (A) av Peak Current I (A) max Applicable Inverter Power (kW) Energy