REQUIREMENTS / REVISIONS Rev Description Rev n by Sud PC Thom VB LH Clyd Act Issue Date YYYY/MM/DD Standard Created T.C. 203/0/0 T.C. 203/0/0 Pending Pending Pending Pending Pending Pending 203/0/0 Sud = Sudbury, Ontario, PC = Port Colborne, Thom = Thompson, Manitoba, VB = Voisey s Bay, LH = Long Harbour, Act = Acton, England, Clyd = Clydach, Wales, N/A = Not licable
REQUIREMENTS 2/.0 PURPOSE This specification describes the minimum electrical requirements for new underground overhead door installations of all types. 2.0 APPLICATION This specification, applies at any Vale locations indicated with approval on the cover page, with the following exceptions: 2. EXCEPTIONS None 3.0 REFERENCE DOCUMENTATION The following documents were used in the development of this document or have instructions and procedures applicable to it. They shall be used in their most recent revision. CSA EEMAC IEEE ANSI NEMA NFPA UL325 CGSB Canadian Standards Association Electrical and Electronics Manufacturers Association of Canada Institute of Electrical and Electronics Engineers American National Standards Institute National Electrical Manufacturers Association National Fire Protection Association Door, drapery, gate, louver, and window operator and systems Canadian General Standards Bureau 4.0 OPERATION 4. DOOR OPERATOR Electric door operators to be CSA / ULC / ESA approved (extra heavy duty gearhead type) c/w electric motor, solenoid operated brake and worm gear reducer. Operator to be guide mounted on the drive side of door mechanism.
REQUIREMENTS 3/ The electric operator shall have rotary screw type limit switches with Nema 4 limit box cover to control open and close door positions (adjustable) as well as a solenoid-operated brake system c/w 360 deg, external compressing brake shoe to stop door in any position. 575 VAC TEFC Motors shall be IEEE 84 certified ( HP or higher). Allow for the following door speeds: DOOR OPENING MAXIMUM DOOR SPEED 50 sq. ft. 24 per second 5 to 300 sq. ft. 8 per second 30 to 500 sq. ft. 2 per second 50 sq. ft. 0 per second Operator to be equipped with built-in manual emergency chain hoist, with a floor level disconnect device. A built-in electrical interlock is to be provided to prevent motor operation during use of manual chain hoist. 4.2 ENCLOSURE Control Panel: CSA / ULC approved combination starter, Nema 4 enclosure with lockable fused disconnect, reversing motor starter, overload protection, control relays and timers, cycle counter, and all wires numbered. All panels are to be steel construction. Fiberglass panels are not acceptable. ESA approval identification required on control panel after modifications made to original configuration for overhead door use. Panel door is to be hinged with provision for a padlock. A warning sign stating the highest voltage to be encountered within the panel must be prominently displayed on the door. The door of the control panel shall include a remote push button station complete with Open, Close and Stop pushbuttons. Pushbuttons shall be NEMA style 30.5 mm flange mounted momentary contact type. Terminal blocks shall be segregated by voltage level with power, control and signal terminals grouped separately. Partitioning barriers shall be provided between different voltage levels.
REQUIREMENTS 4/ 4.3 FUSIBLE DISCONNECT Disconnecting means shall be an EEMAC rated flange operated quick-make, quick-break visible-blade, disconnect switch. Flange mounted operating handle must be interlocked with the enclosure door such that the door cannot be opened with the switch in the closed position unless a defeater is deliberately operated. Rotary switches are not acceptable Opening the disconnect switch shall de-energize all load side controller parts. Motor fuse clips shall be suitable for Ferraz-Shawmut HRC Class C, non-indicating type fuses. Provide label stating maximum fuse sizes. 4.4 MOTOR STARTER Magnetic contactors shall be CSA approved and designed and built to NEMA standards for motor starting applications and minimum size. NEMA rated and IEC designed starters will not be accepted. Reversing starters shall be provided with two contactors that are mechanically and electrically interlocked to prevent simultaneous operation. The operating coil voltage shall be 20 VAC, 60 Hz. Motor starters shall be combinational, three pole, magnetic and across the line type with an individual fused control transformer. An overload relay must be provided, complete with 3 heater elements appropriately sized to protect the motor from thermal damage. A 600/20 VAC, 60 Hz single phase control transformer shall be supplied with each starter. The transformer secondary shall be fused on one leg and grounded on the other. The transformer primary shall be fused on both legs. Control transformers shall use Bussman type CC control fuses and finger safe fuse blocks.
REQUIREMENTS 5/ 4.5 CONTROL PANEL WIRING Power wiring must be a minimum of #2 AWG stranded copper. Control wiring to be a minimum of #4 AWG stranded copper. Provide 600 volt insulated single conductor, stranded (seven strands minimum) copper heat and flame retardant wiring rated 05 deg. C. Provide extra flexible wired for door mounted items. Provide wiring in continuous lengths, without splices between connection points, installed in channels or neatly tied and clamped to panel. Terminate all wiring on terminal blocks if not terminated on devices. No more than one () wire at any one terminal is acceptable. Identify all wires at both ends with permanent sleeve type wire markers, with wire numbers as shown on the manufacturer s control schematic drawings. Provide permanent weather, oil and solvent resistant, computer printable cable and wire markers. No limit switches are to be wired into the neutral (return) side of any relay coil, timer coil, or motor contactor coil. 4.6 GROUNDING AND BONDING Green insulated bonding conductors must be provided between the enclosure, the back panel and the door. Provide terminals for connection of bonding conductors from cables entering the panel. 4.7 IDENTIFICATION All control devices in panel (relays, timers, etc.) are to be identified as to function and voltage designation, as per prints. Rear panel at relay and timer bases is also to be identified as to function and voltage designation, as per prints. Provide one set of electrical schematic drawings / prints inside control panel.
REQUIREMENTS 6/ Relays for use on circuits related to safety devices shall be provided with unique bases than those for use on other circuits to prevent inadvertent swapping of relays. The door and control panel shall come complete with identifying name plates that indicate at minimum the door manufacturer, serial number for the door, and year of fabrication. 4.8 ENTRAPMENT PROTECTION Door operation and external entrapment protection shall comply with UL Standard 325 Door, Drapery, Gate, Louver, and Window Operators and Systems, for industrial use. Photoelectric sensor and edge device contact sensor shall provide redundant sensing of obstructions to provide entrapment protection in accordance with UL 325. Failure of either device shall not permit automatic door operation. Photoelectric sensor set complete with a mounting bracket to mount the sensor set to the rock wall, or to the door frame structure. Edge device contact sensor: fail-safe feather reversing edge c/w protective neoprene rubber loop which is fastened to the door panel on the leading edge of door motion. The following equipment shall normally be required, but should be verified with the Vale representative: Minimum of one remote station (open/close/stop) on either side of the door. This may include the remote station on the control panel side. Location of remote pushbutton stations will be dependent on main type of traffic in area. Motion sensors on each side of the door for automatic operation. The motion sensors shall be complete with a mounting bracket to mount the sensors to the rock wall, the rock back or to the ventilation wall. The motion sensors shall be suitable to detect equipment and personnel at door locations. Timer to close the door if left unattended. Adjustable up to 5 minutes. Flashing amber colored light and horn assembly shall be provided for each side of the door, to indicate door operation. The assemblies shall be complete with a mounting bracket to mount to the rock wall, the rock back, or to the ventilation wall. 5.0 MANUAL OPERATION Provide manual chain hoist with galvanized steel endless hand chain.
REQUIREMENTS 7/ Chain hoist to be of sufficient capacity so as to operate door at a maximum pull requirement of 20 to 30 lbs. Sprocketing for door and operator shafts to be connected by #50 ANSI chain and sprocketing and to allow for the door speeds as described earlier in this specification. 6.0 OPTIONAL EQUIPMENT The following should be confirmed with the Vale representative: Local / Remote Selector Switch on the control panel allowing the door to be PLC and automatic (motion sensing) controlled Auto Mode or Local pushbutton controlled only Manual Mode. Panel designed and configured ready for future connection to a Vale remote PLC. Final PLC design interconnection arrangement will be determined by the Vale Plant Electrical Authority (Site specific) and communicated as such to the vendor supplying the door control panel 7.0 INSTALLATION Install the doors in strict accordance with the manufacturer's printed instructions. The doors and frames are tightly sealed including any cable holes and steel vent duct connecting the two installations if ventilation is required. The pushbutton stations are to be securely mounted to the rock walls with back plates and clearly labeled. Location of remote pushbutton stations will be dependent on main type of traffic in area. The thru-beam, photo detector obstruction sensors installed at the base of the doors, viewing parallel to the base of the doors. The wording Fire Door or Ventilation Door should be painted on any applicable door so designed. Warning signs of appropriate size should be affixed to indicate the door is automated or remote control if so equipped.
REQUIREMENTS 8/ Install signage at all door entry points, Do Not Proceed Through Doorway While Door is in Motion (2 signs per door). Reflective tape required prominently on both sides of a door. Control panel and other devices that could be damaged by vehicle collision shall be protected by concrete bollard posts. Install sufficient area lighting around the doors so that doors are easily seen, and door controls and signage are also easily seen. Visual warning devices (amber flashing light) are to be placed in areas of highest visibility to area personnel. Audio warning devices (horn) are to be placed in areas of highest audibility to area personnel. Main control panel is to be installed on level ground with secure footing, maintaining a minimum of meter of clearance about the panel. It shall be protected from inadvertent collision by a barrier or by physical location. Labelling will conform to Vale standards (Ontario Operation Mines, Electrical Standard 2003-, Equipment Identification for Locking and Tagging). All external cables are to be secured and properly identified to Vale standard. All door wiring is to be verified against supplied prints. All door safety devices are to be proven in operation in accordance with UL325. A door commissioning / acceptance procedure will be completed by Vale personnel. An ESA Electrical Safety Authority field inspection will be completed.
REQUIREMENTS 9/ 7. TYPICAL LAYOUT Overhead Door Typical Physical Layout Opposite Drive Side Pushbutton Station (Opposite Drive Side) Infrared Detector Overhead Door Motion Sensor Infrared Detector Safety Edge Motion Sensor Drive Unit Control Panel Meter Clearance Drive Side Cement Bollard Door Travel Area Pushbutton Station (Drive Side)
REQUIREMENTS 0/ 8.0 APPENDICES endix A: Revision and Transition Notes endix B: Keywords
REQUIREMENTS / endix A: Revision and Transition Notes (Revisions are listed in reverse chronological order with the most recent revision at the top. Revision notes describe: what was changed, why it was changed, and the plan to implement the change, including whether changes are retroactive) Revision New standard created. endix B: Keywords Underground, overhead, door, roll-up, vent door