Installation Instructions: Current Sensor Cylinder Busbar Kit (D1h-D8h) for VLT FC Series
Description
The current sensor cylinder busbar kits include all parts required to install the cylinder busbars in D1h-D8h drives. Each cylinder busbar is inserted through the center of a current sensor during installation. For more information, see the current sensor kit installation instructions listed in Table 1.4.
Kit Ordering Numbers
Table 1.1 Ordering Numbers for Current Sensor Cylinder Busbar Kits
| Kit number | Kit description |
|---|---|
| 176F6517 | 300 A D1 LEM BB kit |
| 176F6757 | 300 A D2 LEM BB kit |
| 176F6756 | 500 A D2 LEM BB kit |
Items Supplied
Table 1.2 Items Supplied with D1h/D3h/D5h/D6h Kit (176F6517)
| Item | Quantity |
|---|---|
| Nomex sleeve | 3 |
| U, V, W cylinder busbars | 1 set of 3 |
| M6x90 screw | 3 |
| Cylinder busbar mounting frame | 1 |
| M6x16 screw | 3 |
Table 1.3 Items Supplied with D2h/D4h/D7h/D8h Kit (176F6756/176F6757)
| Item | Quantity |
|---|---|
| Nomex sleeve | 3 |
| U, V, W cylinder busbars | 1 set of 3 |
| M8x70 screw | 3 |
Safety Information
Only qualified, Danfoss authorized personnel are allowed to install the parts described in these installation instructions. Handling of the drive and its parts must be done in accordance with the corresponding operating guide.
WARNING ELECTRICAL SHOCK HAZARD
VLT FC series drives contain dangerous voltages when connected to mains voltage. Improper installation, and installing or servicing with power connected, can cause death, serious injury, or equipment failure.
- Only use qualified electricians for the installation.
- Disconnect the drive from all power sources before installation or service.
- Treat the drive as live whenever the mains voltage is connected.
- Follow the guidelines in these instructions and local electrical safety codes.
WARNING DISCHARGE TIME
The drive contains DC-link capacitors, which can remain charged even when the drive is not powered. High voltage can be present even when the warning LED indicator lights are off. Failure to wait the specified time after power has been removed before performing service or repair work can result in death or serious injury.
- Stop the motor.
- Disconnect AC mains and remote DC-link power supplies, including battery back-ups, UPS, and DC-link connections to other drives.
- Disconnect or lock PM motor.
- Wait for the capacitors to discharge fully. The minimum waiting time is 20 minutes.
- Before performing any service or repair work, use an appropriate voltage measuring device to make sure that the capacitors are fully discharged.
Cylinder Busbar Identification
Illustration 1.1 Current Sensor Cylinder Busbars
Depicts three distinct current sensor cylinder busbar kits. The first kit, labeled 176F6517, is for 90/110/132 kW power ratings, featuring a V-phase busbar of 64 mm [diameter] 16 mm and U/W-phase busbars of 71 mm [diameter] 16 mm. The second kit, 176F6757, is for 160 kW power ratings, with U/V/W-phase busbars measuring 49 mm [diameter] 19 mm. The third kit, 176F6756, is for 200/250 kW power ratings, with U/V/W-phase busbars measuring 49 mm [diameter] 25 mm.
Table 1.4 Comparison of Current Sensor Cylinder Busbar Kits
| Busbar kit | Current sensor kit | Kit description | Installation instruction |
|---|---|---|---|
| 176F6517 | 176F6516 | 300 A D1 retro fit kit | 300 A Current Sensor Kit for D1h/D3h/D5h/D6h Drives |
| 176F6757 | 176F3752 | 300 A D2 retro fit kit | 300 A/500 A Current Sensor Kit for D2h/D4h/D7h/D8h Drives |
| 176F6756 | 176F3737 | 500 A D2 retro fit kit | 300 A/500 A Current Sensor Kit for D2h/D4h/D7h/D8h Drives |
Assembling the Current Sensor Cylinder Busbars in D1h/D3h/D5h/D6h Drives
WARNING NOMEX SLEEVES REQUIRED
The Nomex sleeves are required to maintain proper electrical protection. Failure to install the Nomex sleeves can result in personal injury or equipment damage.
- Do not discard the Nomex sleeves.
Use the following steps to assemble the current sensor cylinder busbars in D1h/D3h/D5h/D6h drives. Refer to Illustration 1.2.
- Place the 3 Nomex sleeves over the cylinder busbars, 1 per busbar. Place the sleeve with the red marking on the short busbar.
- Insert 3 M6x90 screws through the center of the busbars and place the busbar mounting frame, 1 screw per busbar. The busbar with the red marking is the V busbar and is mounted in the middle.
- Retain 3 M6x16 screws to fasten the busbar mounting frame in the drive when installing the current sensors. The cylinder busbars are inserted through the centers of the current sensors. Refer to 300 A Current Sensor Kit for D1h/D3h/D5h/D6h Drives installation instruction.
Illustration 1.2 Current Sensor Cylinder Busbar Assembly in D1h/D3h/D5h/D6h Drives
Shows the assembly of current sensor cylinder busbars for D1h/D3h/D5h/D6h drives. The diagram illustrates the placement of components: 1. Cylinder busbar mounting frame, 2. Nomex tube, 3. Cylinder busbar, 4. M6x90 screw, 5. Assembled cylinder busbars, and 6. M6x16 screw.
Assembling the Current Sensor Cylinder Busbars in D2h/D4h/D7h/D8h Drives
WARNING NOMEX SLEEVES REQUIRED
The Nomex sleeves are required to maintain proper electrical protection. Failure to install the Nomex sleeves can result in personal injury or equipment damage.
- Do not discard the Nomex sleeves.
Use the following steps to assemble the current sensor cylinder busbars in D2h/D4h/D7h/D8h drives.
- Place the 3 Nomex sleeves over the cylinder busbars, 1 per busbar.
- Insert 3 M8x70 screws through the center of the busbars, 1 screw per busbar.
- The cylinder busbars are inserted through the centers of the current sensors when installing the current sensors in the drive. See 300 A/500 A Current Sensor Kit for D2h/D4h/D7h/D8h Drives installation instruction.
Illustration 1.3 Current Sensor Cylinder Busbar Assembly in D2h/D4h/D7h/D8h Drives
Illustrates the assembly of current sensor cylinder busbars for D2h/D4h/D7h/D8h drives. The diagram shows the key components: 1. Nomex sleeve, 2. Cylinder busbar, and 3. M8x70 screw.
