Eaton Crouse-Hinds MTL F300 Series, Instruction Manual

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6 INM F300 rev 7
Mounting brackets, known as “grounding bars”, can be fitted into ready moulded
positions on both sides of the Megablock. (Grounding bar types are chosen to suit the
model - see page 2.) The FS32 has a central mounting screw to provide a mechanical
and electrical connection to the grounding bar. The bar must then be wired to a low-
impedance, protective local ground point in order to dissipate any induced surge currents.
NOTE
If a trunk-spur partition is to be fitted (Section 5.3.1), install it before mounting the
FS32 modules adjacent to it.
To mount FS32 surge protection modules on a Megablock:
1. Remove and retain the pluggable terminals from one side of the Megablock.
2. Locate the grounding bar lugs in the moulded positions on the side of the
Megablock and press it firmly into place - see Figure 5.6.
3. Repeat 1 and 2 for the other side of the Megablock, if required.
4. Use an M4 screw and ring terminal to connect
each grounding bar to a suitable
low-impedance ground point - see Figure 5.7.
5. Mount an FS32 into one of the empty sockets and tighten its two plug screws,
then tighten the grounding screw into the mounting bar.
6. Insert one of the pluggable terminals into the FS32 and tighten its securing screws.
7. Repeat 5 and 6 for all the other FS32 modules.
A separate grounding bar (F300-BAR) is used for the trunk connector, which must be
similarly connected to ground - see Figures 5.6 & 5.7 Follow a similar procedure to the
one above for the trunk circuit.
NOTE
The FS32 surge protector is not certifed for installation in a Zone 2 hazardous area
and should be used only in applications where the Megablock is installed in a safe
(non-hazardous) area. Consult Eaton’s MTL product line for information on surge
protection in Zone 2 hazardous areas.
6 TESTING
6 .1 Power LED
Each Megablock has a green power LED (labelled PWR). This LED lights when the
segment DC voltage exceeds 10V to indicate power is present.
6 .2 Spur LEDs
A red LED is located next to each Megablock spur port. The LED lights when the
SpurGuard™ current-limiting function is activated by a short-circuit on the spur.
7 ROUTINE MAINTENANCE
Check the general condition of the installation periodically to make sure that no
deterioration has occurred. At least every two years (and more frequently for particularly
harsh environments) check that:
• cable, wire connections, terminations, and screens are in good condition
• the green Power LED is lit
• no red spur LEDs are lit
• no signs of damage or corrosion are present
WARNING !
The plastic parts can store static charge . Clean only with a damp cloth to
prevent static buildup .