350 Feeder Protection System

and panel cutouts are shown in the following sections.

1. Mount the collar of required depth (1.375” or 3”) to the unit (captive or non-drawout)

using 4 screws (see above).

2. Mount the combination of unit and collar to the panel using 4 screws as shown above.

Figure 2-7: Mounting tabs (optional)

1. From the front of the panel, slide the empty case into the cutout until the bottom tab

clicks into place (see above).

2. From the rear of the panel screw the case into the panel at the 8 screw positions

shown above.

3. If added security is required, bend the retaining "V"tabs outward, to about 90°. These

tabs are located on the sides of the case and appear as shown above.

The relay can now be inserted and can be panel wired.

BOTTOM

To avoid the potential for personal injury due to fire hazards, ensure the unit is

mounted in a safe location and/or within an appropriate enclosure.

The adaptor plate for mounting the 350 directly over the existing S1/S2/MDP/IAC or SR735

mounting plate, is shown below:

IP20 Cover (optional)

The IP20 cover minimizes potential dangers to users by preventing finger contact with

electrical connections at the back of the 3 Series drawout units.

Attaching the cover

The steps for attaching the IP20 cover (optional) to the drawout unit are as follows:

Figure 2-13: IP20 Cover mounting - Drawout unit only

1. Place 4 custom standoffs (item#1) using the suggested tightening torque of 8lb-in in

the following order:

A. Remove the 2 mounting screws near letters A and C, of label ABC (item#2), and

mount 2 standoffs.

B. Remove the 2 mounting screws near the letters B and E, of label ABCDE (item#3),

and mount 2 standoffs.

2. Place the IP20 cover (item#4) and secure it with 4 screws (item#5) using the suggested

tightening torque of 8lb-in.

NOTE

NOTE: Make sure the device terminals are wired before placing the cover. Use the 5 slots located

on each side of the cover to guide the wires outside of the cover.

Retrofit kit for IP20

Before attaching the cover, remove the old labels from the device (see item#2 and item#3)

and replace them with the new labels from the retrofit kit. Attach the cover as described in

the previous section.

Arc flash sensors

Arc flash sensors house the fiber optics that are used to detect the arc flash. Mounting

details depend on the sensor type (point or loop).

For detailed installation, testing and maintenance guidance for Arc Flash sensors, see GET-

20057 3 Series Arc Flash Application Note.

If the relay is used in the computation for reducing the Hazard Reduction Category

code, operands for sensor failures must be assigned to an auxiliary output relay which

must be connected into the control logic of the breaker equipment to ensure safe

operations when the output relay is asserted. In the event of this assertion, the Hazard

Reduction Category code cannot be maintained unless backup protection is continuing

to maintain it.

CAUTION: This product uses optical electronic devices (line or point sensors) to sense arc flash

fault conditions. It is recommended to follow proper housekeeping measures &

establish a regularly scheduled preventive maintenance routine to ensure proper

device operation. For maintenance recommendations, see GET-20057 3 Series Arc

Flash Application Note

Arc flash sensors are available in two different configurations, point and loop. Loop sensors

can be used with a black-coated sensor fiber extension to connect the ends of the loop

sensor to the 350 relay through panels up to 51 mm (2 inches) thick