CHAPTER 1: INTRODUCTION 350 ORDER CODES
350 FEEDER PROTECTION SYSTEM – QUICKSTART GUIDE 7
NOTE:
Features related to each order number are subject to change without notice.
Arc Flash System
The 350 protection relay with Input/Output option “A” supports up to 4 Arc Flash sensors,
which are ordered separately so that the connected sensor fiber lengths can be
customized.
FAST PATH:
The total sensor fiber length connected to each loop sensor must not exceed 70 meters of
single sensor fiber. Black sensor fiber is duplex, and must be doubled in calculations.
For example, a loop sensor with a 25 meter transparent sensor fiber plus a sensor fiber
extension of 10 meters would have a total of 2 x 10m + 25m = 45m of single sensor fiber.
FAST PATH:
The total sensor fiber length connected to each point sensor must not exceed 35 meters of
black (duplex) cable.
NOTE:
Generally each loop sensor is used with a sensor fiber extension, in order to minimize
exposure to ambient light when running the sensor fiber between cabinets. A duplex
sensor fiber extension connects the relay to the loop sensor, and can be gently pulled
apart to connect to the loop sensor connectors if they are not adjacent. Consider your
installation needs carefully when ordering sensor and extension lengths.
Empty chassis
The 350 protection relay chassis used with a drawout relay is available separately, for use
as a partial replacement or in test environments. Many features are supported by the
cards and ports within the chassis, as is reflected in the chassis order code.
NOTE:
The chassis order code and drawout relay order code must match exactly.
FAST PATH:
A drawout relay cannot be used in a chassis with different order code options.
897800AF-A1.fm
AFC * *
AF System Component E | Sensor Fiber Extension (black sensor fiber with two single
bulkhead connectors, used with loop sensors)
L | Loop Sensor with transparent sensor fiber
P | Point Sensor with black sensor fiber
Sensor Fiber Length XX Sensor fiber length:
01 to 35 meters for Point Sensors and Extensions
01 to 70 meters for Loop Sensors
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