Download Protection, control, and monitoring for the

M-6200A DIGITAL VOLTAGE REGULATOR CONTROL
SUGGESTED SPECIFICATIONS
Pole-Top/Pad Mount Digital Voltage Regulator Control, for metering, monitoring,
and operational control for step-voltage Regulators shall be provided by a
microprocessor-based package. The microprocessor-based package shall be
suitable for Pole Top Mounted or Pad Mounted single-phase voltage regulators, as
well as Substation single-phase voltage regulators. The control shall have the
following minimum functional and behavioral attributes:
CONTROL FUNCTIONS
The control shall include the following features and can be used for pole-mounted or padmounted single-phase voltage regulators as well as substation installations where SCADA
communications are desired.
Automatic/Manual Control: The Control shall have user-selectable control on the front panel for
Automatic or Manual operation. In addition, it shall have an option for SCADA command to
change the Auto/Manual control state remotely.
Automatic/Manual Switch Status: The control shall provide indication of the Automatic/Manual
Switch status via the communication ports.
Voltage Limits, Tap Position Limits, and Runback: The control shall have Overvoltage and
Undervoltage limits that are independently adjustable from 95 V to 135 V in 0.1 V increments. It
shall have user-settable Upper and Lower tap position limits, with tap position knowledge active.
There shall be an option for an adjustable deadband (above the overvoltage limit) of 1 V to 4 V to
set the runback limit.
Position Tracking: The control shall have a means of accurately tracking tap position
information that can be integrated into an Integrated Volt VAr Management (IVVM) system.
Operations Counter: The control shall have a pre-settable counter that records the number of
raise and lower operations and increments based on the counter configuration, as set by the
user. The counter shall be able to store up to 999.999 operation counts without being affected by
a loss of power supply.
Resettable Operations Counter: The control shall have a second user-resettable software
counter similar to the Operations Counter.
Neutral Counter: The control shall have a pre-settable neutral counter that records the number
of times the Neutral Input is energized. The counter shall be able to store up to 999.999 operation
counts without being affected by a loss of power supply.
Bandcenter and Bandwidth: The control shall have an adjustable bandcenter range from 100 V
to135 V in 0.1 V increments. The bandwidth shall have an adjustable bandwidth range from 1 V
to 10 V in 0.1 V increments.
Line Drop Compensation: The control shall have R and X compensation adjustable from –24 V
to +24 V in 1 V increments. There shall also be an option for Z compensation with the voltage
raise adjustment range from 0 V to +24 V, in increments of 1 V.
Time-Delay: The control shall have a Definite Time-Delay function adjustable from 1 second to
360 seconds, in 1-second increments and Inverse Time-Delay adjustable from 1 second to 360
seconds, in 1-second increments.
Inter-Tap Time-Delay: The control shall have an Inter-Tap Time-Delay to introduce time-delay
between tap operations when control is in sequential mode. The time-delay range shall be
adjustable from 0 to 60 seconds in 1 second increments and require input from an operation
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counter or seal-in circuit validating the tap change operation actually occurred before allowing tap
change operation to the next step.
Selectable Outputs: The control shall provide user-selectable continuous or pulsed outputs.
When the output selection is in continuous mode, an output (raise or lower) signal runs the
tapchanger until the voltage moves within the band setting. When pulsed output is selected and
initiated, the pulse will continue until it reaches the programmed pulse time-out or a counter
contact or motor hold input operates. The pulse length is programmable from 0.2 to 12 seconds,
in increments of 0.1 second.
Reverse Power Operation: The control shall be able to detect a power flow reversal
automatically and determine the direction of power flow, the LTC tap position, and the magnitude
of the reverse power voltage to the regulator. The operational choices shall include Ignore (does
not use power direction to make control decisions), Block (remain in present tap position and stop
operating as a controller), Regulate-in-Reverse (use power reversal as the new source side
voltage and change LTC tap position accordingly), and Run-to-Neutral (change LTC taps to the
neutral position).
CT to VT Phasing Correction: The control shall provide CT to VT phasing correction adjustable
from 0° to +330° in 30° increments.
VT Ratio Correction: The control shall provide a means of VT correction from –15 V to +15 V in
0.1 V increments
Normalizing Voltage: The control shall offer an option for a Normalizing Voltage Multiplier with a
range of 0.80 to 1.20 to be applied to Meter-Out Voltage. This shall be displayed in real-time as
Normalizing Voltage to allow the user to overcome differences in the ratio of the PT that the Load
Voltage input is using versus the PT the end user or other metering methods are using.
Voltage Reduction: The control shall have three independent steps of voltage reduction, each
adjustable from 0% to 10% in 0.1% increments of the bandcenter set point. The Voltage
Reduction function shall be capable of operating from the front panel or through contact inputs
and disabled locally or remotely.
SCADA REMOTE MANUAL CONTROL MODE:
SCADA Remote Manual Mode: The SCADA Remote Manual Mode shall allow the integrated
volt-VAr control (IVVC) algorithm residing at the Master Control Center of the SCADA computer
or other Host computer to operate from SCADA signals received through wired or wireless
communications media to command Regulator RAISE or LOWER operations. The voltage
regulator control shall maintain an Overvoltage and Undervoltage Limit supervision to protect the
“never to exceed” voltages set as standard by the local Public Utilities Commission and SCADA
shall be allowed to make RAISE and LOWER commands as necessary when operating within
those safety limits. The voltage regulator control shall provide a means to switch from Remote
Mode to Automatic Mode if communications fail and continue to operate autonomously until
communications are restored. The control shall provide contingency responses upon extended
loss of communications.
SCADA Remote Manual Mode - SCADA Heartbeat: A SCADA Heartbeat Remote Mode shall
be provided as a means for the SCADA system to place the unit in Remote Operation and
perform RAISE and LOWER operations as directed by a central control source. This mode shall
have a timer, and as long as the Remote Timer setting in the control is refreshed by the SCADA
system writing a timer value to a DNP Analog Output point, the control shall remain in Remote
Manual Operation. If the timer reaches zero, the control shall revert to Local Automatic Operation.
The Local Automatic Operation shall switch back to Remote Manual Operation when SCADA
writes a valid timer value to the DNP Analog Output point.
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SCADA REMOTE MANAGEMENT OF LOCAL AUTOMATIC CONTROL MODE:
SCADA Remote Management of Local Automatic Control Mode: The voltage regulator control
shall have the capability to allow Remote SCADA Management of Local Automatic voltage
regulator control. In this way, the Centralized Control can monitor voltage regulator controls
allowing them to operate autonomously and only controlling them directly when emergency
situations arise. Management via SCADA or other Host computer capable of operating through
wired or wireless communications media allows SCADA to effect control by either changing the
local automatic control settings via analog signal or, by sending binary commands for direct
RAISE and LOWER operations. Sending analog settings to the control and letting it operate
based on its new marching orders instead of directing each RAISE and LOWER command
conserves bandwidth considerably and thereby minimizes the communications burden and total
cost of operation. This mode shall employ a SCADA heartbeat feature as described in SCADA
Remote Manual Mode to return the unit to operation using its programmed settings instead of
those the SCADA system was controlling by.
COMMUNICATIONS
The communication ports shall provide access to all features, including metering, software
updates, and programming of all functions. This shall be accomplished using a modem or direct
serial connection from any PC-compatible personal computer running the control’s
Communications Software package or via SCADA communications software.
Communications Ports: Communication ports shall be optionally available in the following
forms:
 Ethernet 10/100 Mbps through a copper RJ-45 connection (100 Base-T)
 Ethernet 100Mbps Fiber Optic with ST connectors (100 Base-FX)
 Serial Ports with RS-485, ST or V-Pin Fiber Optics, or RS-232
Protocols: The control shall support the following standard protocols: DNP3.0 and MODBUS.
The USB port shall utilize MODBUS for local interface communications. The Ethernet port
supports DNP 3.0 and MODBUS.
ADVANCED SCADA COMMUNICATIONS
True Ethernet
The control shall provide an integrated, true 10/100 Mbps Ethernet, auto negotiable, capable of
supporting up to eight concurrent sessions and simultaneous multiple protocols with up to eight
sockets (concurrent sessions) open at a time. The eight sockets shall be capable of supporting
Modbus and DNP over TCP/IP and UDP with up to five of the eight sockets capable of supporting
DNP 3.0. This requirement allows users simultaneous remote access to the control via the same
physical Ethernet port to view/change settings or retrieve data, without affecting the SCADA
communications.
Full DNP Implementation
The control shall provide full DNP implementation to support both report-by-exception and
unsolicited reporting within DNP 3.0 to aid in the reduction of bandwidth requirements. The
control shall also provide DNP File Transfer to permit the recovery of data logs and triggered
events, oscillography, and device discovery to facilitate setting up the integrated system. The
control shall support DNP security as defined in the DNP 3.0 standard.
The control shall have DNP addressing capability that allows networking of multiple controls. The
DNP implementation shall support the pre-defined global addresses within DNP 3.0 and allow the
user to define two additional global addresses. Each control shall be able to be assigned a
Device Address, Feeder Address, and Substation Address ranging from 1 to 65519. The control
shall support broadcast commands from the master to all controls on the network in order to allow
some or all controls to act on one command at the same time. This capability reduces bandwidth
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and is critical for rapid response to changing system requirements with settings changes in
multiple controls in selected zones. The control shall provide a configuration program that allows
any point to be mapped into any DNP location and allows dummy filler points to be added to
facilitate interoperability by replicating legacy vendor point-maps to SCADA. This program shall
also allow for individual point dead-banding and individual point assignments into Class 1, 2, or 3.
Cyber Security
Within DNP, the control shall permit multiple master source-address authentications, sourceaddress validation, and multilevel access codes logged with date and time. It shall support
Secure DNP authentication using FIPS 180-2 Secure Hash Standard (SHA-1). The control shall
be fully compliant and offer all settings and configuration as defined by the DNP3 user group and
IEC 62351-5. The control shall have a 6-15 character password and an audit log that shows when
someone is logged on the control and which password was used to gain access to the control, in
compliance with NERC CIP standards. The control shall allow for storage of 30 unique passwords
within each control and have an SD card slot to allow the use of a password-keyed SD card that
the control automatically reads to allow user login.
The control’s design shall include the ability to disable ports and services not required for normal
or emergency operations. In cases where disabling is not possible, the port or service shall be
password and access level protected through a communication access security and timeout
feature in the communication software.
Bluetooth®
The control shall have an option for Bluetooth® capability to enable wireless access to the control
that allows the user to configure the control, read status and metering values, as well as change
set points. A generic serial service shall be provided by the control’s Bluetooth® capability to
facilitate establishing initial communications should the Bluetooth® not automatically recognize
listed services. The Bluetooth feature shall include a secure mode with the Bluetooth module
undiscoverable without a user knowing the Bluetooth hardware address in the unit to meet NERC
requirements for Bluetooth communications.
MONITORING/METERING
Harmonic Analysis: The control shall measure, log, and display individual harmonics including
THD (total harmonics distortion) and the harmonic content of the load voltage and load current up
to the 31st harmonic.
Oscillograph Recorder: The control shall have an oscillograph recording function that provides
comprehensive data recording (voltage, current, and status input/output signals) for all monitored
waveforms (at 16, 32 or 64 samples per cycle). The control shall have a means of downloading
oscillograph data via the communications ports to any PC compatible personal computer running
the included communications software program. The downloaded data shall be in a format that
can be examined and printed. The waveform data shall also be available in COMTRADE file
format.
Tap Position Record: The control shall provide means of maintaining tap position information
and a record of the number of times the moving contacts pass through each tap position. The tap
position record is user resettable
AUTO/OFF/MANUAL Switch Status: The control shall provide indication of the
AUTO/OFF/MANUAL switch status through the communication ports.
A or B Regulator Type: The control shall allow the user to select the type of regulator being
used to provide a more accurate source voltage calculation.
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User-Programmable Alarm/Self-Test Contact: The control shall have alarm capability to alert
operator personnel to one or more of the following system conditions:
● Communications Block Invoked
● Block Lower Voltage Limit Exceeded
● Reverse Power Flow Condition Detected
● Tap Block Raise in Effect
● Self-test (Deadman)
● Abnormal Tap Position
● Block Raise Voltage Limit Exceeded
● Voltage Reduction (any step) Invoked
● Load Current Limit Exceeded
● Tap Block Lower in Effect
● LDC/LDZ
● Motor Seal-in Failure
Real-Time Metering: The control shall meter the following measured and calculated values in
real-time:
● Average Load Voltage
● Average Source Voltage
● Control Load, kVA or MVA
● Power Factor Load, Lead/Lag
● Normalizing Voltage
● Average Load Current
● Average Compensated Voltage
● Primary Voltage
● Primary Current
● Primary Watts
● Primary Vars
● Primary VA
● Frequency
● Tap Position
● Drag Hands
● Raise/Lower Timer
● Intertap Timer
● Operation Control
● Resettable Counter
Present Demand: The control shall provide a Present Demand feature that captures the
maximum values during the specified time interval. The user-selectable time interval shall be 15,
30, or 60 minutes.
● Demand Load Voltage
● Primary Watts
● Primary VA
● Demand Primary Current
● Primary VArs
Demand History (Drag Hands Operation): The control shall have the following “drag-hand”
values stored with date and time stamping, averaged over 32 seconds:
● Min Local Voltage
● Max Local Voltage
The control shall have capability to store the following “drag-hand” values with date and time
stamping and calculated over the demand of the user-selectable time intervals of 15, 30, or 60
minutes:
● Max Primary Current (Amps)
● Max Primary Watts (kW or MW)
● Max Primary VA (kVA or MVA)
● Max Primary VArs (kVAr or MVAr)
● Power Factor @ Max VA
Energy Metering: The control shall be capable of retaining the following measured values in
nonvolatile memory and have a real-time clock to record the date/time stamp for each quantity
indicating when the measurement period was initiated.
● Watt Hours Forward (kWh)
● Watt Hours Reverse (kWh)
● VAr Hours Forward (kVArh)
● VAr Hours Reverse (kVArh)
Data Logging: Data logging shall be provided that allows the user to record data internally into
nonvolatile memory. The Data Log shall be saved in COMTRADE format and shall be capable of
being downloaded using either MODBUS or DNP protocols.
Sequence Of Events (SOE): The control shall contain a Sequence of Events recorder for
comprehensive time tagged data recording of control parameters that include Voltage,
Frequency, Tap Position, Current, Counters, and Harmonics. The Sequence of Events Recorder
is triggered by user-selectable programmable parameter logic or manually by the user and shall
be capable of recording up to 129 events.
Computer Business Equipment and Manufacturers Association (CBEMA) Sag & Swell
Recorder: The control shall provide CBEMA monitoring to detect sags and swells and trigger
data collection and alarming functions.
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INPUTS
The control shall have the following inputs:
Load Voltage Input: Nominal 120 VAC, 60 Hz (50 Hz optional); operates properly from 90 VAC
to 140 VAC. If set at 60 Hz, the operating system frequency shall be from 55 to 65 Hz; if set at 50
Hz, the operating system frequency shall be from 45 to 55 Hz. The burden imposed on the input
shall be 8 VA or less. A voltage transformer connected at the controlled voltage bus shall provide
power to the unit. The unit shall be able to withstand twice the voltage input for one second and
four times the voltage input for one cycle.
Motor Power Input: The motor power input to the control shall be a nominal 120 VAC or 240
VAC, at up to 6 A as required by the load, with no wiring changes required.
Motor Seal-In Input: The control shall receive an input from the regulator motor seal-in circuit.
Load Current Input: The control shall have line drop compensation provided by a current
transformer input with a 0.2 A full-scale rating. The burden imposed on the current source shall
be 0.03 VA or less at 200 mA. The control’s load current input shall withstand 400 mA for two
hours and 4 A for 1 second.
Control Power Backup Input: The control shall have a DC Control Power Backup Input feature
to sustain operation of the control in the event of a loss of AC input power to the control and shall
be able to respond to Raise and Lower commands as long as the control’s motor power remains
energized.
Counter Input: The control shall have a Counter Input to detect tap position changes; the input
shall update two counters, one pre-settable and one resettable.
Neutral Tap Position Detect Input: The control shall have a Neutral Position Detect Input to
detect the neutral tap position, which assists the tap position function.
Source Voltage Input: Nominal 120 VAC, 60 Hz (50 Hz optional); operates properly from 90
VAC to 140 VAC. If set at 60 Hz, the operating system frequency shall be from 55 to 65 Hz; if set
at 50 Hz, the operating system frequency shall be from 45 to 55 Hz. The burden imposed on the
input shall be 8 VA or less. A voltage transformer connected at the controlled voltage bus shall
provide power to the unit. The unit shall withstand twice the voltage input for one second and four
times the voltage input for one cycle. The control shall use this input with the Reverse Power
Measured feature when reverse power operation is desired and a Source Side PT input is
available.
Binary Inputs
Voltage Reduction 1 and 2 Inputs: The control shall have Voltage Reduction 1 and 2 inputs to
provide three levels of programmable voltage reduction that can be manually invoked. The control
shall allow the Voltage Reduction Level 2 input to be used as an auxiliary input that is monitored
remotely via SCADA by setting its input to “AUX”.
Non-Sequential/ Auto Tapchanger Inhibit Input: The control shall have non-sequential/auto
tapchanger inhibit input to provide the means to perform non-sequential operations.
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OUTPUTS
The control shall have the following outputs:
Raise Output: Capable of switching 6 A at 120 VAC to 240 VAC motor power.
Lower Output: Capable of switching 6 A at 120 VAC to 240 VAC motor power.
User‑Programmable Alarm Output: One Form “C” contact capable of switching 6 A at 125 VAC
or 0.2 A at 125 Vdc.
FRONT PANEL CONTROLS
The control shall provide the following features:
The control shall provide menu-driven access to all functions by way of seven pushbuttons and a
two-line alphanumeric display. There shall be two programmable Access Codes available to
provide various levels of access to the control functions.
The control shall have a 2-line by 20-character backlit LCD display for enhanced viewing in direct
sunlight and also have a low-level LED backlight for reading in darker environments.
The front panel HMI screen shall be available in either English or Spanish.
RAISE/LOWER switch allows local manual raise and lower commands to be initiated.
AUTO/OFF/MANUAL switch allows auto operation of the control or manual operation from the
panel by using the Raise/Lower toggle switch. When this switch is in Off or Manual, the Control
shall be physically unable to operate the Regulator, acting as a hard copper disconnect.
VOLTAGE SOURCE switch disconnects processing power from the unit when selected to the
OFF position. The EXT position allows the control to be powered from the front panel test jacks.
SCADA CUTOUT (LOCAL/REMOTE) switch allows the local blocking of write commands from
COM1, COM2, or Ethernet.
DRAG HANDS RESET switch resets the tapchanger position indicator drag hands.
EXTERNAL POWER/COM binding posts allows application of a 120 VAC rms nominal voltage to
the unit for test procedures.
METER OUT/COM binding posts allows measurement of the input voltage with a voltmeter.
Smart Flash SD Card Slot: The control shall have an SD Card slot that allows the user to
perform the following functions without the need for a laptop:
●Load Set Points
●Load DNP Configuration
●Save DNP Configuration
●Save Wake Screen Data
●Quick
●Save Set Points
●Clone Save
●Firmware Update
● Save Oscillographic
Records
●Save Data Log
●Clone Load
●Save Metering Data
●Physical Security Key
Capture
LED Indicators: The control shall have the following LED Indicators on the front panel: Out-ofBand RAISE, Out-of-Band LOWER, REVERSE POWER flow detected, CPU OK, ALARM,
VOLTAGE REDUCTION in effect, MANUAL, LOCAL, NEUTRAL, and TX/RX transmit and
receive.
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TESTS AND STANDARDS
The control shall comply with the following type tests and standards:
ELECTRICAL ENVIRONMENT
Voltage Measurement Accuracy
The control shall have a voltage measuring accuracy of ± 0.3 % when tested in accordance with
ANSI/IEEE C57.15.9-2009 standard over a temperature range of – 40° C to + 85° C.
Dielectric Withstand
IEC 60255-5:
2,000 VAC for 1 minute applied to each independent circuit to earth
2,000 VAC for 1 minute applied between each independent circuit.
Impulse Voltage
IEC 60255-5:
5,000 V pk, +/- polarity applied to each independent circuit to earth
5,000 V pk, +/- polarity applied between each independent circuit
1.2 s by 50 s, 500Ω impedance, three surges @ 1 every 5 seconds IEC
Insulation Resistance
IEC 60255-5
> 100 MΩ.
Surge Immunity
IEC 60255-22-5: 2,000 V pk, ± polarity applied, 1.2 s by 50 s, 2Ω/12Ω impedance, five surges
@ 1 every 5 seconds
Voltage Interruptions Immunity
IEC 60255-11-2008
TRANSIENT PROTECTION
High Voltage
All input and output terminals shall withstand 2,000 VAC rms to chassis or instrument ground for
one minute with a leakage current not to exceed 25 mA for all terminals to ground. Input and
output circuits are electrically isolated from each other, from other circuits, and from ground.
Surge Withstand Capacity
IEEE C37.90.1-2002
2,500 V pk Oscillatory
4,000 V pk Fast Transient Burst
IEEE C37.90.1-1989
2,500 V pk Oscillatory
5,000 V pk Fast Transient
NOTE: Disturbance is applied to digital data circuit (RS-485) ports through capacitive coupling
clamp.
Radiated Immunity
IEC 60255-22-3
10V/M
Fast Transient Burst Immunity
IEC 60255-22-4-2008
Class A (4 kV, 2.5 kHz)
NOTE: Disturbance is applied to digital data circuit (RS-485) ports through capacitive coupling
clamp.
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ATMOSPHERIC ENVIRONMENT
Temperature: Control shall operate from – 40° C to +85° C; the LCD display’s visible temperature
range shall be – 20° C to +70° C




IEC 60068-2-1:
IEC 60068-2-2:
IEC 60068-2-78:
IEC 60068-2-30:
Cold, – 40° C
Dry Heat, + 80° C
Damp Heat, + 40° C @ 95% RH
Damp Heat Condensing Cycle: 25° C, + 55° C @ 95% RH
MECHANICAL ENVIRONMENT
The control shall meet the following mechanical environmental specifications:
IEC 60255-21-1
Vibration response Class 1:
Vibration endurance Class 1:
0.5 g
1.0 g
IEC 60255-21-2
Shock Response Class 1:
Shock Response Class 1:
Bump Endurance Class 1:
5g
15g
10g
STORAGE PARAMETERS
The control’s design shall allow for storage under the following conditions:
Temperature Range:
+5° C to +40° C
Humidity: Maximum relative humidity of 80% for temperatures up to 31° C, decreasing from 31°
C linearly to 50% relative humidity @ 40° C
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File: M-6200A-Sugg-Spec.doc