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S&C 6801M Automatic Switch Operators
Table of Contents
Introduction
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Qualified Persons . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Read this Instruction Sheet . . . . . . . . . . . . . . . . . . . 2
Retain this Instruction Sheet . . . . . . . . . . . . . . . . . . . 2
Proper Application . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Special Warranty Provisions . . . . . . . . . . . . . . . . . . . 2
Warranty Qualifications . . . . . . . . . . . . . . . . . . . . . . 3
Safety Information
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Understanding Safety-Alert Messages . . . . . . . . . . . 4
Following Safety Instructions . . . . . . . . . . . . . . . . . . 4
Replacement Instructions and Labels . . . . . . . . . . . 4
Safety Precautions
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Operation
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Applicable Software . . . . . . . . . . . . . . . . . . . . . . . . . 6
Switch Operator Components . . . . . . . . . . . . . . . . . 7
Faceplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Faceplate LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Faceplate Switches . . . . . . . . . . . . . . . . . . . . . . . . . .10
Faceplate LCD Screen . . . . . . . . . . . . . . . . . . . . . . .12
Power Management System . . . . . . . . . . . . . . . . . . .14
Battery Management . . . . . . . . . . . . . . . . . . . . . . . .15
Battery Care and Maintenance . . . . . . . . . . . . . . . . .16
Software
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Control Software . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
IntelliLink ® Setup Software . . . . . . . . . . . . . . . . . . .17
SCADA Communications Equipment . . . . . . . . . . . .18
IntelliLink Setup Software Remote Functionality . . .18
March 11, 2024
© S&C Electric Company 2014-2024, all rights reserved
Reciprocating and Rotating Switch Operation
Operation
2
Switch Operator Functions
Operational Overview . . . . . . . . . . . . . . . . . . . . . . . .19
Switch Operator Automatic Operations . . . . . . . . . 24
Automatic Load Transfer . . . . . . . . . . . . . . . . . . . . . 28
Contracts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Return to Normal . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Prohibit Restoration . . . . . . . . . . . . . . . . . . . . . . . . .31
4
Generating Reports
Saving and Loading a Setup Configuration
Saving a Setup Configuration . . . . . . . . . . . . . . . . . 34
Loading a Setup Configuration . . . . . . . . . . . . . . . . 35
5
IntelliLink Setup Software Used Remotely
6
Viewing IntelliLink Software Without a Connection 36
Saving Settings and Data to a Snapshot . . . . . . . . 36
Viewing a Snapshot . . . . . . . . . . . . . . . . . . . . . . . . 36
Saving Changes Made in the Snapshot . . . . . . . . . 37
Generating a Report from a Snapshot . . . . . . . . . . 37
Creating a Configuration File from a Snapshot . . . 37
17
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Instruction Sheet 1045M-540
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Summary of Contents for S&C 6801M
- Page 1 S&C 6801M Automatic Switch Operators Reciprocating and Rotating Switch Operation Operation Table of Contents Introduction Switch Operator Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Page 2 Special Warranty The standard warranty contained in S&C’s standard conditions of sale, as set forth in Price Sheets 150 and 181, applies to the 6801M Automatic Switch Operator, except that Provisions the first paragraph of the said warranty is replaced by the following:...
- Page 3 IntelliTeam® SG Automatic Restoration System until the desired result is achieved. Warranty of the 6801M Automatic Switch Operator is contingent upon the instal- lation, configuration, and use of the control or software in accordance with S&C’s applicable instruction sheets.
- Page 4 Understanding Several types of safety-alert messages may appear throughout this instruction sheet and on labels and tags attached to the 6801M Automatic Switch Operator. Become familiar Safety-Alert with these types of messages and the importance of these various signal words:...
- Page 5 Safety Precautions DANGER The 6801M Automatic Switch Operator line voltage input range is 93 to 276 Vac. Failure to observe the precautions below will result in serious personal injury or death. Some of these precautions may differ from your company’s operating procedures and rules .
- Page 6 . The 6801M Automatic Switch Operator is connected to switchgear operating at primary voltage levels . High voltage may be present in the wiring to the switch operator or the switch operator itself during certain failures of the switchgear wiring or grounding system because of to a failure of the switch itself .
- Page 7 Processing module. Faceplate The 6801M Operator faceplate (Figure 2 on page 8) includes an alphanumeric display, LEDs, and switches that allow monitoring and control of the line switches and switch operator. To conserve battery power, the switch operator turns off power to the faceplate LEDs and LCD screen when the enclosure door or low-voltage cabinet door is closed.
- Page 8 Operation Figure 2. The 6801M Switch Operator faceplate. Faceplate LEDs The faceplate includes the following LEDs: Overcurrent Fault Indicator This LED is on when the switch operator detects an overcurrent condition on any phase. Depending on the configured reset method, the LED is off when the overcurrent condi- tion ends and: •...
- Page 9 Operation Note: If reinitializing the switch operator using IntelliLink software, the LED turns off regardless of whether the conditions above are met. Remote Communication RCV/XMT Indicator These LEDs blink when the switch operator sends or receives signals through remote communication equipment installed in the operator enclosure. There are separate indicators for Port A and Port B.
- Page 10 Operation Trip Indicator This yellow LED is on when the switch operator trips open the line switch using automatic logic (sectionalizing, phase loss protection, etc.). It is off when the switch is closed. Each TRIP LED provides information about one line switch. If the switch tripped because of phase-loss protection and the Phase Loss Protection with Automatic Reclose mode is enabled, the LED blinks while waiting to reclose the switch.
- Page 11 Operation SCADA CONTROL Switch This switch to toggles the SCADA CONTROL mode to the Remote/Local state. Press the CHANGE button to set the SCADA Control mode to the Local state. This disables remote SCADA operation of the line switch(es) and enables commands from the faceplate CLOSE/OPEN switch(es) and the AUTOMATIC OPERATION ENABLE/DISABLE switch.
- Page 12 This displays the date, time, event, switch-operator interpretation, and action for the most recent protection-related fault event. This message may appear as coded versions of the messages displayed on the Diagnostics>Fault Info screen. See S&C Instruction Sheet 1045M-550, “6801M Automatic Switch Operators: Diagnostics ” for an explanation of the codes.
- Page 13 Use the “+” and “-” keys to navigate the user- command data page to the desired command and press the Enter button to execute that command. Table 1. LCD Data Page for 6801M with IntelliTeam SG System Functionality CATEGORY Fault...
- Page 14 Operation Power Management Power Supply/Control I/O module System The Power Supply/Control I/O (PS/IO) module is a highly efficient computer-controlled, uninterrupted power-supply system specifically designed to meet the specialized power requirements of automated electric power distribution equipment. The PS/IO module provides steady-state current flow for switch-operator operation, pulsed current flow for communication equipment, and occasional large current surges for line-switch operation.
- Page 15 Operation ANALOG PWR This LED is on when power is supplied to the analog processors. It is located at the middle of the board on the top. Battery Management The battery-management system ensures the switch operator can operate the line switch with available battery capacity and provides advanced warning of a weak battery condition before the switch cannot be operated.
- Page 16 Battery Low condition. Battery Care and Typical battery life for 6801M Automatic Switch Operators is five to seven years. The battery should be replaced when its present capacity has reduced to 80% of the capacity Maintenance when new.
- Page 17 Software Control Software Control firmware is factory installed and manages switch operator operation. It continu- ally monitors: • Feeder voltage and current • SCADA commands • Faceplate switch commands • Battery condition • Temperature inside the operator enclosure • Internal clock and calendar •...
- Page 18 Universal Communication Mounting Plate on the back of the faceplate. This provides better reliability for the entire installation. See S&C Instruction Sheet 1045M-560, “6801M Automatic Switch Operator: DNP Points List and Implementation,” and the communication equipment documentation for more information.
- Page 19 Switch Operator Functions Operational Overview This section explains how the switch-operator components work together to detect and respond to overcurrent faults and voltage outages. Signal Processing The switch operator has separate electronic paths to accommodate the different require- ments of peak and normal operating-current measurements. For normal operating-current measurements, full scale is 800 amps RMS.
- Page 20 (delta) or phase-to-neutral (wye). Voltage Sensing for S&C Switches The 6801M Switch Operator software supports 15-kV, 25-kV, and 34.5-kV S&C switches. The nominal voltage sensor ratios for the line switch(es) with corresponding maximum voltage levels are shown in Table 2.
- Page 21 Switch Operator Functions When configuring the switch operator, phase-angle offset values are entered to compensate for both sensor-dependent and installation-dependent phase-angle characteristics. Overcurrent Fault & Voltage Loss Detection Overcurrent faults are measured with peak-current detection hardware for phase faults and separate true-RMS amplitude-detection hardware for the harmonic-sensitive neutral current faults.
- Page 22 Switch Operator Functions Ground Overcurrent Detection The switch-operator hardware measures ground current as the analog-vector sum of the three individually sensed phase currents. A very accurate harmonic-independent true RMS detecting circuit integrates the analog-vector sum over several cycles. The multi-cycle integration produces a slight response-time delay that is inversely propor- tional to the magnitude of the change in ground current.
- Page 23 Switch Operator Functions • When the switch is closed, the switch operator starts the Phase Current Inrush Restraint timer and the Ground Current Inrush Restraint timer. • When both of the Current Inrush Restraint Multiplier values are set to Time Block mode, the switch operator ignores all overcurrent conditions until the Inrush Restraint timer expires.
- Page 24 The switch operator can sectionalize a distribution circuit based on the detected fault current and voltage fluctuations associated with source-side recloser operation. The 6801M Switch Operator monitors each feeder (or branch) independently and responds to changes on that feeder regardless of the condition of the other pad-mounted switch and feeder.
- Page 25 Switch Operator Functions • When the Sectionalizer Reset and Extended Voltage Loss Time timer expires before the counter reaches the appropriate Recloser Counts to Trip value, the switch operator resets the counter to zero. Later voltage losses will be considered part of a new reclose sequence.
- Page 26 Switch Operator Functions Follow these steps to enable phase-loss protection: In the Features Enabled field on the STEP 1. Setup>General>Automatic Operation screen, select a combination that includes the Phase Loss Protection feature. On the Setup>General>Automatic Operation screen, configure the Phase STEP 2.
- Page 27 Switch Operator Functions When the line switch is closed, users can enable the Shots-to-Lockout mode by enabling the assigned User Select command. This feature is useful for providing the Shots-to-Lockout function to a load-side manual switch. The feature is enabled indefinitely (latched) until disabled by changing the assigned User Select command to the Blocked state.
- Page 28 Switch Operator Functions Automatic Load The IntelliTeam SG system defines a team as two or more switch controls that protect a given line segment by transferring load to an alternate source. The switch control may Transfer be a member of one or more teams. After completing the sectionalizing and/or phase-loss logic, the switch control can reclose the switch to transfer load to an adjacent distribution circuit or to restore service to load on the source side of the fault.
- Page 29 Switch Operator Functions The number of line segments a team can pick up is restricted by using the Line Segment Limit setpoint on the Setup>Restoration>IntelliTeam SG>Team X screen. For example, the Add 1 setting inhibits any other line segments from being restored through a member after it restores its first line segment.
- Page 30 Switch Operator Functions Every team member has a contract agent. Unlike the coach, contract agents are static, and only the contract is communicated. The contract agent obtains contracts and maintains outstanding contracts. A contract is required when: • During a transfer event the coach of the requesting line segment asks a team member to close an alternate source switch to energize the segment •...
- Page 31 Switch Operator Functions Return to Normal Following the reconfiguration event and subsequent repair and restoration of the faulted line section, team members can return to their normal state. When the Return-to- Normal timers expire, the coaches begin the process of returning each team to its normal configuration.
- Page 32 Switch Operator Functions Prohibit Restoration Selection The IntelliTeam SG Restoration feature can be enabled or disabled on the IntelliTeam SG>Team Summary screen. See Figure 3. When the Prohibit Restoration mode is active, view the Logs>Status Point Log screen to determine whether this was the result of a SCADA command or a Prohibit Restoration Timer operation.
- Page 33 Generating Reports The Report feature will save the switch operator software settings and stored data to the computer in a CSV (comma-separated value) file. A report can be saved as a permanent record, and report data can be used in spreadsheets or other programs. Follow these steps to generate reports: STEP 1.
- Page 34 Saving and Loading a Setup Configuration Saving a Setup When two or more team members use a similar setup configuration and the same software version, the configuration can be saved from one team member and loaded into the Configuration other(s). Users then only need to manually adjust the setpoints that are unique for each individual team member.
- Page 35 Make any setpoint changes that are required for this team member. For more STEP 4. information see S&C Instruction Sheet 1045M-530, “6801M Automatic Switch Operators: Setup.” Note: If loading the stand-alone setpoints, be sure to enter the correct value for...
- Page 36 Connect the computer to the switch operator used for saving information, and start the IntelliLink software. For information about starting IntelliLink software, see the “Start IntelliLink Software” section in S&C Instruction Sheet 1045M-530, “6801M Automatic Switch Operators: Setup.” If the computer is already connected to the team member, skip this step.
- Page 37 IntelliLink Setup Software Used Remotely Saving Changes Made All changes made to configuration settings in the snapshot are automatically saved to disk immediately. There is no need to save the changes in a separate operation. in the Snapshot Generating a Report Follow the same procedure as when connected to a switch operator.
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Questions and answers
Low voltage in one of the phases
Low voltage in one of the phases for S&C part number 6801M could be caused by harmonic distortion, especially in systems with delta-connected customer transformers. The switch operator treats these systems as special cases because phase-to-phase voltage sensing can be affected. Additionally, rapid voltage changes may not be detected accurately due to the 1.6-second response time of the monitoring system. These factors can result in a perceived or actual low voltage condition in one phase.
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