Section 3 Overview; Operator Overview; Identify The Ied - ABB RET670 Operator's Manual

1MRK504114-UEN E
Section 3
3.1
3.2
Operator's manual
Overview
About this chapter
This chapter presents a general overview of the Operator's manual.

Operator overview

The Local human-machine interface (LHMI) on the IED provides an ideal
mechanism for the day to day operation and even advanced use of the IED. The
keypad, LCD and LEDs on the front of the IED are what constitute the LHMI.
Troubleshooting, apparatus control, monitoring, setting and configuring are all
possible via this interface. Through the screens and menu elements available, as
well as the keypad, the user is able to navigate throughout the menu structure and
move from screen to screen. This document is, to a great extent, arranged in the
same way as the IED software is structured and describes all aspects of operation
via the LHMI.
The operator can document disturbances so that their causes can be analyzed and
evaluated for future reference. For example, the fault currents and voltages at the
time of the fault can be documented. The operator can also retrieve data about
protected objects, providing further information for fault analysis. This implies
viewing the mean value of current, voltage, power and frequency or primary and
secondary measured phasors. The operator can check the IED status at any time.
In some cases the operator may need to change the way the IED operates. This
might include changing the active setting group or a parameter value. This must
always be done strictly according to applicable regulations because un-authorized
changes may lead to severe damage of the protected object especially if a fault is
not properly disconnected.

Identify the IED

To identify the IED, open the diagnostics menu. The identity of the IED along with
other data is found under:
Main menu/Diagnostics/IED status/Product Identifiers
When the Product identifiers submenu is opened, the user sees the following screen:
Section 3
Overview
17