Eaton QD5 User Manual

Table10. Function codes (continued)
Parameter
Unit of
Measure
Security Level
Default Value
Key Entry Limit
To Read To Write To Reset Low High
043 System Line
Voltage
XXXXX Volts
Volts View Modify NA
“-----”
(Invalid)
1200 36000
•The control is designed to operate on primary system voltages from 1200 V to 36000 V.
•Ratio correction is performed by the firmware and consequently, the primary voltage must
be entered for this calculation.
•Example: A regulator installed on a 7200 V system (line-to-neutral) would have 7200
entered.
•Example: A regulator installed open or closed delta on an 11000 V system (line-to-line)
would have 11000 entered.
•Note: The line voltage rating is available on the regulator nameplate and is summarized
in Table 14 and Table 15 for most regulator ratings.
044 Overall P.T.
Ratio
XXX.X
--- View Modify NA
“-----”
(Invalid)
10.0 300.0
•The control is designed to operate on primary system voltages from 1200 V to 36000 V.
Ratio correction is performed by the firmware, and, consequently, the overall potential
transformer (PT) ratio must be entered for this calculation.
•Note: The overall PT ratio is available on the regulator nameplate and is summarized in
Table 14 and Table 15 for most regulator ratings.
•Example: A 13800 V regulator, installed on a 7970 V system, would have 7970 entered at FC
43 and 63.7 entered at FC 44. The control will then define the 125.1 V (output from the
back panel ratio correction transformer) as the 120-base voltage, and 120 V is displayed
at FC 6. If FC 148 is set to a 240 V base, the control will define the 125.1 V as the
240 V base and 240 V will be displayed at FC 6.
044 Internal P.T.
Ratio
XXX.X
--- View Modify NA
“-----”
(Invalid)
10.0 300.0
•The internal PT ratio for the applicable system voltage from the nameplate voltage chart.
•When a voltage regulator is equipped with an Internal Differential PT (IDPT), but not with
second Ratio Correction Transformer (RCT2), the control will use the internal PT ratio to
calculate the source voltage from the IDPT voltage input.
•When FC 146 Vin P.T. Configuration is set to Vin, the control will use the Internal P.T.
Ratio when determining the source-bushing voltage.
•While FC 146 Vin P.T. Configuration is set to Vdiff with RCT2, the text (INVALID VIN
CONFIG) will be displayed when attempting to edit this parameter.
045 C.T. Primary
Rating
XXXX Amps
Amps View Modify NA
“-----”
(Invalid)
25 4000
•The control is designed for 200 mA as the rated current transformer (CT) output current,
and will meter to 800 mA with no loss of accuracy.
•Ratio correction is performed by the firmware and consequently the CT primary rating must
be entered. The CT primary rating is available on the regulator nameplate.
•Example: A 7620 V, 328 A regulator (250 kVA) would have a C.T. rating of 400:0.2 and
therefore, 400 is entered.
045 Rated Load
Current
XXXX Amps
Amps View Modify NA
“-----”
(Invalid)
25 4000
•This is the 55 °C rated load current of the regulator. This information can be found on
the unit nameplate.
61
INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225003EN April 2018
CL-7 Voltage Regulator Control

Eaton QD5 Specifications

General

Brand	Eaton
Model	QD5
Category	Cables and connectors
Language	English