DC Injection Brakes
What is a DC injection or motor brake and how does it work?
A dc injection unit is an electronic device that provides smooth frictionless braking of ac motors. It does not use brake discs or shoes so does not wear out or need maintenance.
It creates a DC stationary 0Hz magnetic field in place of the rotating 50Hz field. This brakes the rotor until it is also stationary.
The addition of a DC injection brake to an existing machine can be as simple as replacing the existing the starter and fitting a new starter with built in braking unit.
Safety and machine limitations must be taken in to account. See DC injection braking sizing notes (available on request).
We have a range of units that offer an economical electrical solution to the requirement of motor braking.
DC Brakes with direct-on-Line starter: - Three Phase Simple direct on line starter for local operation. Mounted in compact IP55 plastic or steel enclosures. Complete with motor overload.
Model |
Motor kW |
Motor HP |
Motor Voltage |
Max. Brake Current |
INJ-H-0K75-DOL |
0.75 |
1 |
380-415 |
3A |
INJ-H-1K1-DOL |
1.1 |
1.5 |
380-415 |
4.5A |
INJ-H-1K5-DOL |
1.5 |
2 |
380-415 |
6A |
INJ-H-2K2-DOL |
2.2 |
3 |
380-415 |
9A |
INJ-H-3K0-DOL |
3 |
4 |
380-415 |
10A |
INJ-H-4K0-DOL |
4 |
5.5 |
380-415 |
16A |
INJ-H-5K5-DOL |
5.5 |
7.5 |
380-415 |
22A |
INJ-H-7K5-DOL |
7.5 |
10 |
380-415 |
25A |
INJ-H-11K-DOL |
11 |
15 |
380-415 |
44A |
INJ-H-15K-DOL |
15 |
20 |
380-415 |
54A |
DC Brakes with direct-on-Line starter: - Single Phase
Motor kW |
Motor HP |
Motor Voltage |
Max. Brake Current |
0.75 |
1 |
220-240 |
10A |
1.1 |
1.5 |
220-240 |
10A |
1.5 |
2 |
220-240 |
25A |
2.2 |
3 |
220-240 |
30A |
DC Brake Modules only: - Three & Single Phase
| Model | Motor kW | Motor HP | Motor Voltage | Max. Brake Current (A) |
| INJ-S30A | 1.5 | 2 | 220-240 | 30 |
| INJ-S-36A | 2.2 | 3 | 220-240 | 36 |
| INJ-H-11A | 2.2 | 3 | 380-414 | 11 |
| INJ-H-30A | 5.5 | 7.5 | 380-415 | 30 |
| INJ-H-36A | 7.5 | 10 | 380-415 | 36 |
| INJ-H-75A-ASS | 18.5 | 25 | 380-415 | 75 |
| INJ-H-120A-ASS | 30 | 40 | 380-415 | 120 |
| INJ-H-220A-ASS | 55 | 75 | 380-415 | 220 |
Power
Drive Services, The Old Ambulance Station,
Ledbury Street, Leigh, Lancashire, WN7 1NX,
UK