Capacitor Bank Control for Remote Capacitor Automation

CAPACITOR BANK CONTROL OPERATION

Control Modes of Operation

The control includes two standard modes of Automatic Voltage Control (Classic Voltage Control and Autodaptive® Voltage Control), Optional VAr Control mode and Current Control mode are available.

Classic Voltage Control Mode: The control will make its OPEN and CLOSE switching decisions based on measured line Voltage conditions. Voltage excursions beyond the set value for greater duration than the time delay will result in appropriate control operation.

• Control Open Voltage: Adjustable from 95.0 to 140.0 V in 0.1 V increments
• Control Close Voltage: Adjustable from 95.0 to 140.0 V in 0.1 V increments
• Close and Open Time Delays: Definite or Inverse; adjustable from 0 seconds to 600 seconds, in 1 second increments. Timer reset can be selected as instantaneous or integrating.

Autodaptive Voltage Control Mode: This feature contains two control methods, Fixed or Average. The Fixed method provides a Bandcenter setting the control compares to measure voltage to open or close the Capacitor bank. The Average method uses an Effective Bandcenter based on a long term average of the input voltage to compare to measure voltage to open or close the Capacitor bank. Both methods employ an inverse timer and Bandwidth to optimize Bank operation and eliminate unnecessary switching.

Automatic VAr Control Mode Option*: The control will make its OPEN and CLOSE switching decisions based on measured line VAr conditions. VAr excursions beyond the set value for greater duration than the time delay will result in appropriate control operation. The control can be ordered with either 5 A CT or line post current sensor inputs to provide phase current measurement to the control.

• Control Open VArs: –100 % to 100 % of single-phase capacitor Bank size in 1 % increments
• Control Close VArs: 0 % to 100 % of single-phase capacitor Bank size in 1 % increments
• Close and Open Time Delays: Definite or Inverse; adjustable from 0 seconds to 600 seconds, in 1 second increments. Timer reset can be selected as instantaneous or integrating.

Automatic Current Control Mode Option*: The control will make its switching decisions based on measured line current conditions. Current excursions beyond the set value for greater duration that the time delay will result in appropriate control operation. The control can be ordered with either 5 A CT or Line Post Sensor inputs to provide phase current measurement to the control.

• Control Open Current: Adjustable from 10 to 600 Amps
• Control Close Current: Adjustable from 10 to 600 Amps
• Close and Open Time Delays: Definite or Inverse; adjustable from 0 seconds to 600 seconds, in 1 second increments. Timer reset can be selected as instantaneous or integrating.

Remote Control Mode: In this mode, the control receives commands through communications for Closing or Opening of the Capacitor Bank.
Remote Control Mode Limits: These limits can be disabled or enabled. If control operation will result in voltage outside of these limits operation will be blocked and notification will be sent to the sender. If measured voltage is outside of these limits, the control will initiate an operation in the direction to return voltage within limits.

• Overvoltage Limit: Adjustable from 95.0 to 140.0 V in 0.1 V increments
• Undervoltage Limit: Adjustable from 95.0 to 140.0 V in 0.1 V increments
• Voltage Limits Timer: Definite or Inverse; adjustable from 0 seconds to 600 seconds, in 1 second
  increments. Timer reset can be selected as instantaneous or integrating.

M-6280A Digital Capacitor Bank Control
Standard Features

• Four control modes of operation:
  – Classic Automatic (Voltage, optional
  VAr Control or optional Current Control)
  – Autodaptive® mode (Fixed or Averaging)
  – Remote
  – Manual
• Two override modes of operation:
  – Temperature
  – Time
• Time Delay – Definite and Inverse
• Adjustable Maximum/Minimum Voltage Limits
• Neutral Unbalance current detection
  – Bank/Switch Failed
  – Bank Closed
  – Bank Open
  – Supports 200 mA input to control
• User selectable overvoltage limit/undervoltage
  limit and time delay for remote control mode
• Adjustable warning timers for Close/Open/Re-close
• Adjustable Close/Open output pulse duration
• Real-Time Metering of measured and calculated parameters
• VT Ratio Correction, VT and CT (Phase and Neutral) Multiplier
• Operations Counter
• Resettable Operations Counter
• Harmonic Analysis of Voltage and Current Signals, up to the 31st plus THD
• Data Logging
• Remote/Auto - Local Manual switch
• Outputs: Close, Open and Alarm
• 20 Character by 2 Row LCD display (LED backlit)
• Up to 30 unique 15 character User Access Codes (Level 1 or Level 2)
• CBEMA monitoring to detect sags and swells and trigger data collection and alarming functions
• Smart Flash SD Card Slot supporting SD and SDHC SD cards
• Smart Flash SD Card can be linked to one or multiple controls providing a physical security “Key” which provides User Access Level 2 Access to the control when the SD Card is inserted for settings manipulation
• Sequence of Events (SOE) recorder
• Device Discovery
• Source Address Validation
• Oscillography
• Front Panel LEDs for Remote/Auto, Local Manual, Alarm, Close, Open, OK, RSSI, Neutral Unbalance, (TX) Transmit and (RX) Receive
• Programmable Alarms
• Front Panel Hot Buttons provide direct access to menu headers
• Front Panel testing:
  – Int/Ext Voltage Source switch
  – External Power input terminals
  – Meter Out terminals
• Communication Protocols DNP3.0 and MODBUS®
• Adaptive Delta Voltage sensing during switch operations
• Daily Operations Counter Limit
• CapTalk® S-6280 Communications Software
• Capacitor Bank switch status for phase A, B and C
• Graphical display of real-time harmonic spectrum of voltage and current using CapTalk Communications Software
• Communication Ports:
  – USB
  – RS-232
• SCADA “HeartBeat” (with DNP3.0 only)
• Supports Station and Feeder Level DNP addressing in addition to individual addressing for Smart Grid applications
• One pushbutton access to user configurable Wakeup screen for manual data recording with Smart Flash SD Card saving feature
• One set (3) of spare fuses are included
• Capacitor Bank Switch selection “Solenoid Driven” or “Motor Driven” for Close/Open Pulse Duration

Optional Features

• Automatic VAr Control Mode options include:
  – 5 A phase current input
  – Line post sensor input
• Local Wireless Bluetooth® capability
• Ethernet Port (10/100 Base-T) is available through a RJ-45 jack or Fiber Optic. This port supports DNP over TCP/IP and UDP; MODBUS over TCP/IP.
• 5 A Neutral current input for Neutral Unbalance detection
• Line Post Current Sensor input for Neutral Unbalance detection
• RS-485 communication port
• Serial Fiber communications port (ST or Vpin connectors available)
  
  All brand or product names appearing in this document are the trademark or registered trademark

Sales and Service

For sales and service information contact your local representative or contact the factory:

E-mail: sales@beckwithelectric.com
Call (727) 544-2326 or Fax (727) 546-0121