Function For Energy Calculation And Demand Handling Etpmmtr; Setting Group N; Overview; Differential Protection - ABB REC670 Operator's Manual

1MRK 511 188-UEN C
9.2.7.3
9.3
9.3.1
9.3.2
9.3.2.1
9.3.2.2
Operator's manual
parameters. The setting Operation is used to turn the function on or off. The
parameters are adjusted to change cycle times, pulse counter criteria and the like.

Function for energy calculation and demand handling ETPMMTR

Main menu/Settings/General settings/Metering/ThreePhEnergMeas(MMTR)/
ETP
Parameters for activating the function, activate accumulation of energy values,
selection of time interval for energy calculation and forward/reverse pulse
quantities for accumulated energy values are found here.

Setting group N

Overview

There are some default setting groups. Under general settings, parameters in these
groups can be changed to suit the needs of an application. The default settings have
been chosen according to established practice in the industry but will usually
require a certain amount of adjustment to suit the requirements of individual
applications.

Differential protection

Overview
The settings available for differential protection in Setting group N are not the
same as those under General settings. The main difference is that settings in the
Setting group N category can be changed on the fly without the IED requiring a
restart. A dialog box appears when attempting to make changes to setting group N.
Choose OK to proceed, or cancel to abort.

High impedance differential protection HZPDIF

Main menu/Settings/Setting group N/Differential protection/
HighImpDifferential(PDIF,87)/HZD
Displays available instances of HZPDIF with settings for operation, the alarm
voltage level [V] on the CT secondary side, the time delay to activate the alarm, the
operating voltage level [V] on the secondary side of the CT and the value of the
series resistor in [Ω].
Read and change settings
Section 9
53