Related Manuals for ITB CTR-2
Summarization of Contents
INTRODUCTION
DESCRIPTION
Overview of the voltage regulator's function and construction.
IDENTIFICATION OF HIGH VOLTAGE TERMINALS
SYSTEM CONNECTIONS
Describes various connection configurations for regulators.
Single phase between phase and earthed neutral
Configuration for phase-to-neutral.
Two phase
Configuration for two-phase connections.
Open Delta
Configuration for two regulators in open delta.
Closed Delta
Configuration for three regulators in closed delta.
Star ("Y")
Configuration for three regulators in a grounded wye.
CASCADED VOLTAGE REGULATORS
Fault Effect
Impact of power failures on cascaded regulators.
Effect of operations avalanche
Interaction between tap changers in cascaded systems.
INSTALLATION
Inspection before installation
Pre-installation checks for damage and leaks.
REGULATOR PLACEMENT IN SERVICE
Placing in service
Step-by-step guide to energize the regulator.
VERIFYING REGULATORS OPERATIONS
REMOVING REGULATOR FROM SERVICE
Safe procedure to disconnect the regulator.
MAINTENANCE
General Instructions
General maintenance procedures and verification points.
TAP CHANGER
Reposition pieces
List of tap changer parts for replacement.
CONTROL CTR-2
Components of Front Panel
Description of the CTR-2 control panel elements.
Set of screens
Explains navigation and display of CTR-2 control screens.
Standard screen
Description of the main display of the CTR-2 control.
Screen Shortcut
Method for quick access to specific screens.
Navigation in reading screens
How to browse through measured value screens.
SETTINGS IN CONTROL – GENERAL VIEW
Navigation through the adjustment screens
Procedure for adjusting control parameters.
CONTROL SETTINGS - DETAILS
VT relation for control unit
Setting the voltage transformer ratio.
CT relation for control units
Setting the current transformer ratio.
Regulation parameters
Parameters affecting voltage regulation behavior.
MAP ACTIVATION PARAMETERS
Time to set active maps 2 and 3
Setting hours for map activation.
Minute to set active maps 2 and 3
Setting minutes for map activation.
Month to set active map 3
Setting the month for map 3 activation.
Amount of months where Map 3 is active
Duration for which Map 3 remains active.
FLOW CONTROL PARAMETERS
Overcurrent lock
Parameter to prevent tap changes during overcurrent.
Actuation mode in case of inverse flow
How the regulator behaves with inverse power flow.
TAP CHANGER CONTROL
Actuation, insensitivity & extreme locks
Configuration for motor operation and limits.
Position Reading method
Options for reading tap changer position.
Phase shift between voltage and current
Setting phase shift for accurate measurements.
ADVANCED SETTINGS
Optional source voltage measurement
Configuring external voltage transformer for source voltage.
Delayed return to automatic mode
Setting automatic return to auto mode.
Locl limit & Datalogging period
Limit for inverse flow detection and data logging frequency.
COMMUNICATION & CLOCK SETTINGS
Inverse time enabling
Programming time delays for maps.
Regulator operation mode
Switching between manual and automatic modes.
Serial communication address
Setting unique addresses for communication.
Port communication modes
Configuring communication modes for ports.
OPERATIONAL MODES
OPERATING WITH EXTERNAL VOLTAGE SOURCE
Using an external source for configuration.
LINE DROP COMPENSATION
Compensating for voltage drop due to line impedance.
OPTIONAL INDICATORS & ALTERNATIVE DRIVE
INDICATOR IRT-1 (OPTIONAL)
Description of the optional position indicator.
ALTERNATIVE DRIVE
Manual tap changer control via a separate switch.
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