Technical data

Figure 11.3: Enclosure showing shield and earth core cable between earth terminal post and enclosure lid
Number
Description
1 Earth core cable to enclosure lid
2 Internal shield
3 Earth termination post
7. Remove the internal shield and set it nearby, outside of the PSU enclosure. You can now
access the hole for the power cable and the M20 blanking plug covering the hole.
8. Remove the blanking plug. Install suitable (metal) conduit in place of the blanking plug.
Secure the conduit as recommended by the conduit manufacturer.
!
Caution!
Only installations with conduit meet UL standards. If you choose to use a power cord without
conduit (not recommended), fit the 1/2 in. NPT cable gland (supplied) in place of the
blanking plug. Note: It is easier to fit the power cord through the cable gland outside of the
enclosure, and then attach the gland to the enclosure. Ensure that the cable glands have
sufficient room to allow for the cables to enter (approximately 60 mm on either side of the
enclosure).
9. Prepare the power cable as need, and then feed the cable into the enclosure.
10. Connect the Live and Neutral cores to the correct screw terminals on terminal block HD1
as identified in the table below and printed on the PCB. Observe polarity and voltage.
PCB Marking Description
L Live
N Neutral
Earth / Ground
11. Remove the brass nut and copper washer from the earth termination post (item 3 in the
figure “Mains input with shield removed…”); set these aside.
12. Remove the ring terminal (supplied).
13. Insert the earth core from the mains cord (item 2 in the figure “Mains input with shield
removed…”) into the crimp portion (size M6, UL-certified) of the ring terminal and crimp it in
place.
MIC440 Explosion-protected Camera Install the MIC Power Supply Unit (PSU) | en 35
Bosch Security Systems, Inc. Operation Manual 2013.11 | 8.1 |