vacon • 18 Available sections
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3.3 Non-regenerative front-end section
The non-regenerative front-end section (NFS) includes one or multiple NXN units from the VACON
®
NXP product series. The NXN is a non-regenerative supply unit that can be utilized in 6-pulse, 12-
pulse, 18-pulse and 24-pulse systems.
* _M selection for mirrored design.
As standard the NFS section includes the following (see Figure 4):
1. The NXN unit(s)
2. Chokes
3. Terminals for control and indication signals (installed in MIS or ADS section)
4. DC fuses for the Supply Unit
5. AC fuses for the filter
As pre-engineered standard options we can provide the following:
• UL approved design and components (+NAR)
• Arc detection (+ADU)
• Cabinet heater (+ACH)
• Cabinet light (+ACL)
Table 8. Available NFS sections
NFS type Number of NXN units Width x Height x Depth (mm)
NFS_1x* 1 800 x 2100 x 605
NFS_2x* 2 800 x 2100 x 605
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