BECKWITH ELECTRIC M-3520, Instruction Book

Page: 34 / 217

2–1
Application - 2
2
Application
2.1 Introduction ............................................................................... 2–1
2.2 System Diagrams ..................................................................... 2–2
2.3 Configuration ............................................................................. 2–4
2.4 Setpoints and Time Settings .................................................... 2–7
2.5 Oscillograph Recorder ............................................................ 2–48
2.6 Target History Recorder ......................................................... 2–49
2.7 IRIG-B Time Sync ................................................................... 2–49
2.1 Introduction
This chapter provides information for the person or
group responsible for the application of the M-3520
Intertie Protection Relay. Individual relay functions
can be programmed to activate any combination of
eight output contacts (OUT1–8). Similarly, any relay
function can be programmed to be blocked by any
of six control/status inputs (IN1–6) or the internally
generated VT Fuse Loss Status. The relay provides
programmable setpoints for each relay function.
Some relay functions provide two or more elements,
each with a magnitude setting and associated time
delay. Also, the relay includes the ability to use
different I/O assignments for each element, if
desired.
This chapter is designed to assist in the application
aspects of the Intertie Protection system. Detailed
information on the relay functions, configuration,
setpoints, functional logic schemes, and oscillograph
recorder is provided.
This chapter also specifies appropriate forms for
recording and communicating the input settings to
the parties responsible for operation and installation
of the relay.