350 Feeder Protection System

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

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.

FASTPATH: The total sensor fiber length connected to each point sensor must not exceed 35 meters of

black (duplex) cable.

NOTE

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

NOTE: The chassis order code and drawout relay order code must match exactly.

FASTPATH: A drawout relay cannot be used in a chassis with different order code options.

Other accessories

• 1819-0103 350 Retrofit Kit for 735

• 1819-0102 350 Retrofit Kit for IAC Relay

• 1819-0101 350 Retrofit Kit for MDP Relay

• 1819-0100 350 Retrofit Kit for S1/S2 Cut-Out

• 18L0-0075 3 Series Depth reducing collar - 1.375”

• 18L0-0076 3 Series Depth reducing collar - 3.00”

• 18L0-0080 3 Series IP20 Kit

• 3S-NDO-STCONKIT 3 Series NDO straight terminal block kit

• 0804-0458 USB A-B configuration cable - 6’

NOTE

NOTE: Refer to the 3 Series Retrofit Instruction Manual for the retrofit of Multilin MI, MII, MLJ, and

TOV relays.

Specifications

NOTE

NOTE: Specifications are subject to change without notice.

NOTE

NOTE: All accuracies defined below are at nominal frequency (50Hz or 60Hz) unless otherwise

stated.

NOTE

NOTE: To obtain the element operating time delay, i.e. from fault injection until operation, add the

operate time to the curve time.

To obtain the total element operating time, i.e. from the presence of a trip condition to

initiation of a trip, add 8 ms output relay time to the operate times listed below, with the

exception of Arc Flash SSR loads.

Password security

PASSWORD SECURITY

Master Password: ...............................................8 to 10 alpha-numeric characters

Settings Password:.............................................3 to 10 alpha-numeric characters for local and remote

access

Control Password: ..............................................3 to 10 alpha-numeric characters for local and remote

access

Protection

BROKEN CONDUCTOR (I1/I2 OR 46BC)

Minimum operating positive current:........0.05 to 1.00 x CT in steps of 0.01 x CT

Maximum operating positive current:.......0.05 to 5.00 x CT in steps of 0.01 x CT

Pickup level:...........................................................20.0% to 100.0% in steps of 0.1%

Dropout level:........................................................97% to 98% of the pickup level

Pickup time delay:...............................................0.000 to 65.535 s in steps of 0.001 s

Timer accuracy: ...................................................± 3% of delay setting or ± ¾ cycle (whichever is greater) from

pickup to operate

Operate time:........................................................<30 ms at 60 Hz

WATTMETRIC GROUND FAULT (32N)

Measured power:................................................zero sequence

Number of elements: ........................................1

Characteristic angle: .........................................0º to 359º in steps of 1°

Pickup threshold:.................................................0.001 to 1.200 pu in steps of 0.001 pu

Pickup level accuracy: ......................................± 2% or ± 0.03 pu, whichever is greater

Hysteresis:..............................................................3% or 0.001 pu, whichever is greater

Pickup delay: .........................................................Definite Time (0.00 to 600 .0 s in steps of 0.1 s), Inverse Time,

or Flexcurve

Inverse time multiplier:.....................................0.01 to 2.00 in steps of 0.01

Curve timing accuracy: ....................................± 3.5% of operate time or ± ¼ cycle (whichever is greater)

from pickup to operate

Operate time:........................................................<30 ms at 60 Hz

Mechanical installation

This section describes the mechanical installation of the 350 system, including dimensions

for mounting and information on module withdrawal and insertion.

This equipment is Suitable for mounting on the flat surface of a Type 1 Enclosure

Dimensions

The dimensions of the 350 are on the following pages. Additional dimensions for mounting