DVCAS Medium Voltage, METAL Enclosed, Outdoor Switchgear Ring Main Units – User Guide PDF
JPS7801200

Operating Instructions

Outdoor Cover Operation

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
  • Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, or NOM-029-STPS-2011.
  • This equipment must only be installed and serviced by qualified, trained, and certified electrical personnel.
  • Only qualified electrical personnel familiar with medium voltage circuits should perform the instructions in this bulletin. Personnel must understand the hazards involved in working with or near medium voltage equipment.
  • Qualified electrical personnel must perform work in accordance with national and local electric codes.
  • Perform such work only after reading and understanding all of the instructions in this bulletin.
  • Before performing assembly, visual inspections, testing, or maintenance on the equipment, disconnect all sources of electric power. Assume that all circuits are live until they have been completely de-energized, tested, grounded, and tagged. Pay particular attention to the design of the power system. Consider all sources of power, including the possibility of back-feeding.
  • Never disconnect the main trip source of energized equipment.
  • Always use a properly rated voltage sensing device to confirm power is off.
  • Before making any electrical connections, ensure that all leads to be connected are de-energized and proper safety grounds are applied.
  • Metal enclosed switchgear has interlocks designed to minimize hazards to the user. The user of this device is responsible for recognizing the potential hazards, for wearing personal protective equipment, and for taking adequate safety precautions.
  • Do not make any adjustments to the equipment or operate the system with safety features removed. Contact your local Schneider Electric representative for additional instructions if the device does not function as described in this manual.
  • Handle this equipment carefully and install, operate, and maintain it correctly in order for it to function properly.
  • Ensure that the ground circuit is correctly assembled.
  • Preventive maintenance operations must be carried out regularly.
  • Follow regular inspection, checking the gas pressure and condition of the external elements, and carry out the usual cleaning task. Refer to Maintenance Program.
  • Carefully inspect your work area and remove any tools and objects left inside the equipment.
  • Replace all devices, doors, and covers before turning on the power to this equipment.
  • All instructions in this manual are written with the assumption that the customer has taken these measures before performing installation, operation, maintenance, or testing.
Failure to follow these instructions will result in death or serious injury.

Opening and closing operations are performed with the operating handles supplied for that purpose or can be remotely controlled.

The three-position isolating switch with ground in the circuit breaker function is manual and dependent on the operator.

Circuit breaker operation is stored energy type (charged spring mechanism) and independent of the operator.

Front Door Cover Description

Front Door Cover Operation - Open

WARNING
DOOR ASSISTED UPWARD WITH STORED ENERGY
  • Follow the information in the equipment drawings, instruction bulletin, and local and national codes and standards for the required clearances around the equipment, especially in the front.
  • Maintain full control of the door during closing or opening operations.
  • Do not stand or place objects within 65 inches of the front door during its opening or closing operations.
  • Ensure door is fully open before releasing control of the door.
  • Ensure the door is secured shut with captive hardware before releasing control of the door.
  • It is mandatory that the door stay referenced in Step 4 below be positioned as soon as the door is opened.
Failure to follow these instructions can result in death, serious injury, or equipment damage.

  1. Remove the padlock from the hasp on the left side of the cover.

  2. Remove the captive screws located on the lower side of the cover.

  3. Remove the two remaining captive screws in the lower area of the front side of the outer door.

  4. Pay special attention to the pneumatically assisted door opening. Control the door completely through the open and close operation. Upon opening the door, use the door stay to maintain the door in the open position.

Front Door Cover Operation - Close

Perform the steps in the previous section in the reverse order. Ensure the door is secured shut with captive hardware before releasing control of the door.

Circuit Breaker Panel Operations

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
  • Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, or NOM-029-STPS-2011.
  • This equipment must only be installed and serviced by qualified, trained, and certified electrical personnel.
  • Only qualified electrical personnel familiar with medium voltage circuits should perform the instructions in this bulletin. Personnel must understand the hazards involved in working with or near medium voltage equipment.
  • Qualified electrical personnel must perform work in accordance with national and local electric codes.
  • Perform such work only after reading and understanding all of the instructions in this bulletin.
  • Before performing assembly, visual inspections, testing, or maintenance on the equipment, disconnect all sources of electric power. Assume that all circuits are live until they have been completely de-energized, tested, grounded, and tagged. Pay particular attention to the design of the power system. Consider all sources of power, including the possibility of back-feeding.
  • Never disconnect the main trip source of energized equipment.
  • Always use a properly rated voltage sensing device to confirm power is off.
  • Before making any electrical connections, ensure that all leads to be connected are de-energized and proper safety grounds are applied.
  • Metal enclosed switchgear has interlocks designed to minimize hazards to the user. The user of this device is responsible for recognizing the potential hazards, for wearing personal protective equipment, and for taking adequate safety precautions.
  • Do not make any adjustments to the equipment or operate the system with safety features removed. Contact your local Schneider Electric representative for additional instructions if the device does not function as described in this manual.
  • Handle this equipment carefully and install, operate, and maintain it correctly in order for it to function properly.
  • Ensure that the ground circuit is correctly assembled.
  • Preventive maintenance operations must be carried out regularly.
  • Follow regular inspection, checking the gas pressure and condition of the external elements, and carry out the usual cleaning task. Refer to Maintenance Program.
  • Carefully inspect your work area and remove any tools and objects left inside the equipment.
  • Replace all devices, doors, and covers before turning on the power to this equipment.
  • All instructions in this manual are written with the assumption that the customer has taken these measures before performing installation, operation, maintenance, or testing.
Failure to follow these instructions will result in death or serious injury.

Three-position Isolating Switch with Ground

Three-position Isolating Switch with Ground

  1. Use the selector to choose the operation (busbar or ground connection). Push slightly and turn until the operating shaft corresponding to the operation you wish to perform is accessible.
  2. Insert the operating handle in the appropriate shaft for busbar connection or for ground connection.
  3. Turn the operating handle 210º to the limit in the indicated direction for the operation you wish to perform and remove the operating handle. The direction of movement can be changed over at any time, regardless of whether this movement has been completed or not.
  4. To finish the operation, it is necessary to move the selector back to the “0” position.
The three-position isolating switch with ground can only be turned from “connected to busbars” position to “grounded” position by performing the following two operations successively:

  1. Switch the busbar disconnector from “connected” to “disconnected.”

  2. Switch the grounding switch from “disconnected” to “connected.”

For the opposite operation, reverse the steps:

  1. Switch the grounding switch from “connected” to “disconnected.”

  2. Switch the busbar disconnector from “disconnected” to “connected.”

Three-position Isolating Switch with Ground (Bus Connection or Isolated)

Three-position Isolating Switch with Ground

To operate the three-position isolating switch with ground:

  1. Choose the operation by pushing in the selector smoothly and rotating it to the desired position. The operating shaft will become accessible.

  2. Insert the mechanism handle into the shaft port.

  3. Rotate the handle to the desired operation.

  4. Remove the mechanism handle.

  5. Return the selector back to its original position (O).

Three-position Isolating Switch with Ground (Bus Connection or Isolated)

Three-position Isolating Switch with Ground (Isolated or Grounding)

Three-position Isolating Switch with Ground Operation (Isolated or Grounding)

Circuit Breaker Operation

Circuit Breaker Operation

The circuit breaker is provided with mechanical pushbuttons for opening and closing, marked “O” and “I.”

Before closing operation, it is necessary to charge the closing spring. Spring charging is done by introducing the handle in the opening and moving it up and down several times. After the charging is complete, the spring charge indicator will change to charged position.

Spring charging only occurs with the downward movement of the handle.

A spring charging motor is also available as an option.

In the case of a motorized mechanism, the spring charging is made automatically after any closing operation.

The opening operation is performed locally by a mechanical pushbutton. The closing operation of the circuit breaker charges the opening spring.

Turn off all power supplying this equipment, including upstream power, before working on or inside equipment. Opening the circuit breaker does not deenergize the line cables in the cable compartment. A separate isolation means is required.

Circuit Breaker Components and Indicators

Interlocks

Key interlocks are optional equipment. They are often supplied in conjunction with the switchgear to direct proper operation and coordination of the equipment. The key interlock schemes are usually described on the switchgear assembly drawings supplied with the equipment.

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
  • Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, or NOM-029-STPS-2011.
  • This equipment must only be installed, operated, and serviced by qualified electrical personnel.
  • Turn off all power supplying this equipment before working on or inside equipment.
  • Always use a properly rated voltage sensing device to confirm power is off.
  • Follow all site operating procedures when using this equipment, including any required key lock or interlock systems integrated into the equipment.
  • Do not close the circuit breaker when the line side is energized and the switch is grounded. If energized conductors are present on either side of the breaker, verify that the opposite conductors are not grounded locally or downstream.
  • Do not parallel power sources unless the system is specifically designed and rated for source paralleling.
  • Replace all devices, doors and covers before turning on power to this equipment.
Failure to follow these instructions will result in death or serious injury.

Access to Connectors in the Circuit Breaker Panel

Red Button

The cable box cover can only be opened after grounding the medium voltage cables. This is done by selecting ground position on the three-position isolating switch with ground and closing the circuit breaker.

Once grounding is applied, remove the cable box cover screws, push the red button, and lift off the cover. See the figure above for the button location.

To place the cover, lift it into position, push the red button, and replace the fixing screws. For cable testing, there is a specific pushbutton located in the right side of the cable compartment which allows the circuit breaker to be opened.

Please contact Schneider Electric immediately if you observe any deviation in the interlock functionality.

Low Voltage Compartment

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
  • Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, or NOM-029-STPS-2011.
  • This equipment must only be installed and serviced by qualified, trained, and certified electrical personnel.
  • Only qualified electrical personnel familiar with medium voltage circuits should perform the instructions in this bulletin. Personnel must understand the hazards involved in working with or near medium voltage equipment.
  • Qualified electrical personnel must perform work in accordance with national and local electric codes.
  • Perform such work only after reading and understanding all of the instructions in this bulletin.
  • Before performing assembly, visual inspections, testing, or maintenance on the equipment, disconnect all sources of electric power. Assume that all circuits are live until they have been completely de-energized, tested, grounded, and tagged. Pay particular attention to the design of the power system. Consider all sources of power, including the possibility of back-feeding.
  • Never disconnect the main trip source of energized equipment.
  • Always use a properly rated voltage sensing device to confirm power is off.
  • Before making any electrical connections, ensure that all leads to be connected are de-energized and proper safety grounds are applied.
  • Metal enclosed switchgear has interlocks designed to minimize hazards to the user. The user of this device is responsible for recognizing the potential hazards, for wearing personal protective equipment, and for taking adequate safety precautions.
  • Do not make any adjustments to the equipment or operate the system with safety features removed. Contact your local Schneider Electric representative for additional instructions if the device does not function as described in this manual.
  • Handle this equipment carefully and install, operate, and maintain it correctly in order for it to function properly.
  • Ensure that the ground circuit is correctly assembled.
  • Preventive maintenance operations must be carried out regularly.
  • Follow regular inspection, checking the gas pressure and condition of the external elements, and carry out the usual cleaning task. Refer to Maintenance Program.
  • Carefully inspect your work area and remove any tools and objects left inside the equipment.
  • Replace all devices, doors, and covers before turning on the power to this equipment.
  • All instructions in this manual are written with the assumption that the customer has taken these measures before performing installation, operation, maintenance, or testing.
Failure to follow these instructions will result in death or serious injury.

To access the low voltage upper compartment, operate the latching handle. To access the low voltage lower compartment, remove the nine fixing screws and lift the low voltage compartment cover.

Accessing the Low Voltage Upper Compartment

Accessing the Low Voltage Lower Compartment

Live Line Indicator (LLI)

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
  • Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, or NOM-029-STPS-2011.
  • This equipment must only be installed and serviced by qualified, trained, and certified electrical personnel.
  • Only qualified electrical personnel familiar with medium voltage circuits should perform the instructions in this bulletin. Personnel must understand the hazards involved in working with or near medium voltage equipment.
  • Qualified electrical personnel must perform work in accordance with national and local electric codes.
  • Perform such work only after reading and understanding all of the instructions in this bulletin.
  • Before performing assembly, visual inspections, testing, or maintenance on the equipment, disconnect all sources of electric power. Assume that all circuits are live until they have been completely de-energized, tested, grounded, and tagged. Pay particular attention to the design of the power system. Consider all sources of power, including the possibility of back-feeding.
  • Never disconnect the main trip source of energized equipment.
  • Always use a properly rated voltage sensing device to confirm power is off.
  • Before making any electrical connections, ensure that all leads to be connected are de-energized and proper safety grounds are applied.
  • Metal enclosed switchgear has interlocks designed to minimize hazards to the user. The user of this device is responsible for recognizing the potential hazards, for wearing personal protective equipment, and for taking adequate safety precautions.
  • Do not make any adjustments to the equipment or operate the system with safety features removed. Contact your local Schneider Electric representative for additional instructions if the device does not function as described in this manual.
  • Handle this equipment carefully and install, operate, and maintain it correctly in order for it to function properly.
  • Ensure that the ground circuit is correctly assembled.
  • Preventive maintenance operations must be carried out regularly.
  • Follow regular inspection, checking the gas pressure and condition of the external elements, and carry out the usual cleaning task. Refer to Maintenance Program.
  • Carefully inspect your work area and remove any tools and objects left inside the equipment.
  • Replace all devices, doors, and covers before turning on the power to this equipment.
  • All instructions in this manual are written with the assumption that the customer has taken these measures before performing installation, operation, maintenance, or testing.
Failure to follow these instructions will result in death or serious injury.

Verification of Voltage Presence

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
  • Do not use the Live Line Indicator system to verify the absence of voltage.
  • Always use a properly rated voltage sensing device to confirm power is off.
Failure to follow these instructions will result in death or serious injury.
CAUTION
LOW VISUAL PERCEPTION
Use a bright light to improve the visual perception to view the display.
Failure to follow these instructions can result in injury or equipment damage.

Voltage Detector

A blinking live line indicator lamp, or an illuminated live line indicator lamp, indicates the presence of voltage in the cable corresponding to the indicated phase, L1-L2-L3, which usually corresponds to phase A-B-C, respectively. The indications of the voltage presence indicator system must not be used as absence of voltage indicator. Always use a properly rated voltage sensing device to confirm power is off. Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, or NOM-029-STPS-2011.

Phase Concordance Checking

Each phase has connection points that allow you to check the phase concordance by connecting a suitable phase comparator (such as Schneider Electric’s, supplied optionally), or by means of a voltmeter. The phase comparator is connected between the connecting points of the phase to be checked and will illuminate.

Instructions for phase concordance checking are provided with the phase comparator.

According to installers’ standard practice, phase conductors are marked from left to right according to the phases L1, L2, and L3. If you detect a different phase order, analyze the reason and contact Schneider Electric Services.

Cable Test

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
  • Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, or NOM-029-STPS-2011.
  • This equipment must only be installed and serviced by qualified, trained, and certified electrical personnel.
  • Only qualified electrical personnel familiar with medium voltage circuits should perform the instructions in this bulletin. Personnel must understand the hazards involved in working with or near medium voltage equipment.
  • Qualified electrical personnel must perform work in accordance with national and local electric codes.
  • Perform such work only after reading and understanding all of the instructions in this bulletin.
  • Before performing assembly, visual inspections, testing, or maintenance on the equipment, disconnect all sources of electric power. Assume that all circuits are live until they have been completely de-energized, tested, grounded, and tagged. Pay particular attention to the design of the power system. Consider all sources of power, including the possibility of back-feeding.
  • Never disconnect the main trip source of energized equipment.
  • Always use a properly rated voltage sensing device to confirm power is off.
  • Before making any electrical connections, ensure that all leads to be connected are de-energized and proper safety grounds are applied.
  • Metal enclosed switchgear has interlocks designed to minimize hazards to the user. The user of this device is responsible for recognizing the potential hazards, for wearing personal protective equipment, and for taking adequate safety precautions.
  • Do not make any adjustments to the equipment or operate the system with safety features removed. Contact your local Schneider Electric representative for additional instructions if the device does not function as described in this manual.
  • Handle this equipment carefully and install, operate, and maintain it correctly in order for it to function properly.
  • Ensure that the ground circuit is correctly assembled.
  • Preventive maintenance operations must be carried out regularly.
  • Follow regular inspection, checking the gas pressure and condition of the external elements, and carry out the usual cleaning task. Refer to Maintenance Program.
  • Carefully inspect your work area and remove any tools and objects left inside the equipment.
  • Replace all devices, doors, and covers before turning on the power to this equipment.
  • All instructions in this manual are written with the assumption that the customer has taken these measures before performing installation, operation, maintenance, or testing.
Failure to follow these instructions will result in death or serious injury.

This test requires the use of cable test adapters for “T” terminals, supplied by the manufacturer of the connectors.

Proceed as follows for circuit breaker cubicles:

  1. Open the circuit breaker.

  2. Always use a properly rated voltage sensing device to confirm power is off. The voltage presence indicator and LLI must not be used to confirm the absence of voltage.

  3. Isolate the other end of the cable.

  4. Ground the cable, by closing consecutively the ground switch and the circuit breaker.

  5. Disconnect the cable connected voltage transformers (in case there are any).

  6. Remove the cable box cover.

  7. Remove the cover from the “T” connector of the cable that is going to be tested.

  8. Unscrew the insulating cap from the connector.

  9. Connect the test adapter.

  10. Remove the ground by opening the circuit-breaker. To do this: release the interlocking of the circuit breaker being opened by pushing the mechanism release button on the upper side of the cable box. See the figures below.

  11. Test the cable at the appropriate test voltage for the cable, and do not exceed 52 kV DC.

  12. Remove the test connectors.

  13. Ground the cable by lifting the cable box release interlock until it latches and re-close the circuit breaker.

Cable Testing with Adaptors

Cable Compartment

Gas Check

The tank is connected to a pressure gauge placed on the front panel. A low- pressure alarm contact for control can be optionally installed.

The pressure gauge can be replaced without gas emission thanks to its automatic closing valve. The SF6 gas is contained in a sealed pressure vessel. The quantity of SF6 gas, which depends on the type and performance of the equipment, is indicated on each individual nameplate.

Additional information on SF6 and its disposal is available in Safety Provisions.

Monitoring the Camera System for the Three-position Isolating Switch with Ground

DANGER
camera damage and/or software detected issue
Per EMC safety regulations, do not use an AC power supply with the computer while connecting it to the camera via the USB port. Before connecting the camera system, check that the integrated computer battery is fully charged.
Failure to follow these instructions will result in death or serious injury.

This section describes the camera system for the three-position isolating switch with ground in the DVCAS switchgear. The three-position isolating switch with ground can be used as:

  • An isolating switch

  • A grounding switch

This section does not describe all configurations or every custom arrangement of the product. For additional information, please contact your local Schneider Electric representative.

Follow these general guidelines for proper operation of the camera system.

  • The instructions in this section are based on the Microsoft® Windows® operating system compatibility.

  • The connection may not operate correctly if the camera to the computer is attached with an interface cable via a USB hub.

  • The connection may not operate correctly if other USB devices are being used, excluding USB mice or keyboards, at the same time as the camera. If this occurs, disconnect the other devices from the computer and try reconnecting the camera.

  • Do not connect two or more cameras at the same time to the same computer. The connections may not operate correctly.

  • Never allow the computer to go into standby (sleep) mode while a camera is connected via the USB interface cable. If it does happen, do not disconnect the interface cable. Try to wake the computer with the camera in the connected state. Some computers will not wake up properly if you disconnect the camera while they are in standby mode. Please refer to the computer manual for instructions regarding the standby mode.

Camera System Specifications

The camera system specifications are as follows:

  • Image sensor: CMOS, 1/3 monochrome

  • Resolution: 752 x 480 (WVGA)

  • Refresh rate: 18 fps

  • USB version: 2.0

  • Operating temperature: -13 to +167 °F (-25 to +75 °C)

  • Sensitivity: < 0.1 lux

  • Power supply: 5 Vdc, 300 mA via USB (including LEDs)

Schneider Electric View Port Camera Software License Terms

  • These license terms are an agreement between Schneider Electric and you. Please read them. They apply to the Schneider Electric View Port Camera software, referred to hereafter as “the software.”

  • By using the software, you accept these terms. If you do not accept them, do not use the software.

  • If you comply with these license terms, you have the rights stated below for each license you acquire.

Overview

License Model. The software is licensed on a per user basis.

Installation and Use Rights

  • General: One user may install and use copies of the software.

  • Included Schneider Electric Programs: These license terms apply to all Schneider Electric programs included with the software.

  • Third Party Programs: The software contains third party programs. The license terms with those programs apply to your use of them.

  • Microsoft Windows: The software contains Microsoft .NET Framework 2.0, which is part of Microsoft Windows. The license terms for Microsoft Windows apply to your use of .NET Framework 2.0.

Scope of License

The software is licensed, not sold. This agreement only gives you some rights to use the software. Schneider Electric reserves all other rights. You may use the software only as expressly permitted in this agreement. You may not reverse-engineer, decompile, or disassemble the software.

Backup Copy

You may make one backup copy of the software. You may use it only to reinstall the software.

Not for Resale Software

You may not sell software marked as “NFR” or “Not for Resale.”

Upgrade

If this software is marked as an upgrade version, you may use it only if you have a license to use the software eligible for upgrade.

Limitation On and Exclusion of Damages

You can recover only direct damages up to the amount you paid for the software from Schneider Electric and its suppliers. You cannot recover any other damages, including consequential, lost profits, special, indirect, or incidental damages.

Software Package Contents

The View Port Camera software package included with the switchgear contains the following items:

  • 3.3 ft. (1 m) USB cable with two type A plugs

  • Schneider Electric View Port Camera CD containing user software, USB drivers, and a PDF of the instruction bulletin

  • Printed instruction bulletin

Computer System Hardware Requirements

The computer system hardware requirements are as follows:

  • 2 GHz processor

  • 1 GB RAM

  • 10 MB free disk space

  • 256 MB graphics memory

  • 1024 x 768 pixels display

  • USB 2.0 port

Computer System Software Requirements

The computer system software requirements are as follows:

  • Microsoft® Windows® 11, 64-bit

  • Adobe® Reader®, version 5 or higher

View Port Camera Operating Instructions

NOTE: Do not connect the computer to the switchgear panel until the camera software and the USB driver have been installed.

View Port Camera Desktop Icon

Before operating the three-position isolating switch with ground, initiate the view monitoring system:

  1. Start the View Port Camera application by double-clicking the desktop icon.

  2. Remove the USB view port cover or cap on the front of the DVCAS unit.

  3. Connect the USB cable to the computer and then to the view port.

Three-position Isolating Switch with Ground Positions

The position of the switch blades is shown by the position indicator on the mimic bus. Always look through the switch position viewing window to verify the actual position of the blades.

NOTE: When operating the three-position isolating switch with ground, look for real-time movement of the switch blades in the live camera images. This will help prevent mistaking a static image for a live one.

Check the position indicator of the three-position isolating switch with ground and compare the live image with the representative reference images shown in the figure below.

Representative Indicators of the Switch Blade Positions

QR Code is a registered trademark of DENSO WAVE INCORPORATED in Japan and other countries.

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