Eaton MET User Manual

Multi-phase voltage regulation
The CL-7 voltage regulator control is capable of controlling
up to three (3) voltage regulators with the use of a single
control. In order to function in a multi-phase configuration,
the control must be equipped with a multi-phase module
attached to the bottom of the base control. It must also be
installed into a control box configured with a back panel and
connections for multiple voltage regulators.
Figure41. Multi-phase module with control switches,
a neutral light, motor fuse and terminals for connected
second and third regulators
Multi-phase parameters
Once the control and control box are configured, the
multi-phase functionality is turned on using FC 200. Other
multi-phase settings are required to designate the mode of
operation (FC201), the number connected regulators
(FC 202) and designation of a lead regulator (FC 203).
The Multi-phase Mode selection designates how the control
will operate the regulators with respect to each other. The
settings include:

Independent – Connected units regulate voltage
independently of each other;

Lead Phase Regulation – Similar to Leader/Follower, the
lead regulator determines the tap position for all phases
based on conditions on the lead phase;

Voltage Averaging – All regulators are gang operated
and on the same tap position with the control regulating
based upon the average load voltage of all connected
regulators;

Max Deviation – All connected regulators regulate
independently, but within a sliding window of a maximum
deviation of tap positions.

Advanced Independent - Connected units regulate
independent of each other and are also able to operate
using individual settings values for Set Voltage,
Bandwidth, Time Delay and Line Drop Compensation.
See document MZ225003EN, CL-7 Multi-phase Control
Reference for detailed information on the multi-phase
definitions and settings. Also see document MN225015EN,
CL-7 Regulator Control ProView NXG Software Programming
Guide for additional multi-phase operational and setup
information.
135
INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225003EN April 2018
CL-7 Voltage Regulator Control

Eaton MET Specifications

General

Brand	Eaton
Model	MET
Category	Cables and connectors
Language	English