Peripheral Electrical Components Selection Guidance; Selection Of Braking Unit And Braking Resistor - Veichi JT550 Series Manual

Chapter 3 Electrical Installation

3.3 Peripheral Electrical Components Selection Guidance

Converter model
JT550-S2-0R4GB
JT550-S2-0R7GB
JT550-S2-1R5GB
JT550-S2-2R2GB
JT550-T3-0R7G/1R5PB
JT550-T3-1R5G/2R2PB
JT550-T3-2R2G/4R0PB
JT550-T3-4R0G/5R5PB
JT550-T3-5R5G/7R5PB
JT550-T3-7R5G/011PB
JT550-T3-011G/015PB
JT550-T3-015G/018PB
JT550-T3-018G/022PB
JT550-T3-022G/030PB
JT550-T3-030G/037P
JT550-T3-037G/045P
JT550-T3-045G/055P
JT550-T3-055G/075P
JT550-T3-075G/090P
JT550-T3-090G/110P
JT550-T3-110G/132P
JT550-T3-132G/160P
JT550-T3-160G/185P
JT550-T3-200G/220P
JT550-T3-220G/250P
JT550-T3-250G/280P
JT550-T3-280G/315P
JT550-T3-315G /355P
JT550-T3-355G /400P
JT550-T3-400G /450P
JT550-T3-450G
JT550-T3-500G
JT550-T3-560G
JT550-T3-630G
JT550-T3-710G

3.4 Selection of Braking Unit and Braking Resistor

Value selection of the Braking Resistor

The AC drive transfers regenerative energy generated during braking of motor to external
braking resistor.
According to the formula U* U/R = Pb:
• U: the braking voltage at system stable braking.
• U: value varies with the system. The 380 VAC power system usually selects 700 V braking
• Pb: braking power.
Power selection of the Braking Resistor

In theory, power of braking resistor is the same as braking power. But in consideration of derating, power of
braking resistor is calculated from the following formula:according to the formula :0.7 * Pr = Pb* D.
MCCB Contactor
(A) (A)
10 9
16 12
25
18
32
25
6
9
10
9
10
9
16 12
20 18
32 25
40 32
50 38
50 40
63 50
100 65
100 80
125 95
160 115
225 170
250 205
315 245
350 300
400 300
500 410
630 475
630 475
700 620
800 620
1000 800
1250 800
1250 1000
1600 1000
1600 1250
2000 1600
2500 2000
- 20 -
Power Input Power Output
Cable Cable
(mm ) (mm
2
0.75 0.75
0.75 0.75
1.5 1.5
2.5 2.5
0.75
0.75
0.75
0.75
0.75
0.75
1.5 1.5
2.5 2.5
4.0 4.0
4.0 4.0
6.0 6.0
10 10
10 10
16 16
25 25
35 35
50 50
70 70
95 95
120 120
120 120
150 150
185 185
2*120 2*120
2*120 2*120
2*120 2*120
2*150 2*150
2*185 2*185
2*240 2*240
2*240 2*240
2*300 2*300
2*300 2*300
2*300 2*300
2*300 2*300
JT550 Series Inverter Manual
Control Circuit
Wirings (mm )
2
)
2
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.75
0.75
0.75
0.75
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0