AREVA P122 PDF

This Safety Section alsoincludes reference to typical equipment label markings. The technical data in this Safety Section is typical only, see the technical data section of therelevant equipment documentation for data specific to a particular equipment. Reference should be made to the external connection diagram before the equipment isinstalled, commissioned or serviced. Language specific, self-adhesive User Interface labels are provided in a bag for someequipment.

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This Safety Section alsoincludes reference to typical equipment label markings. The technical data in this Safety Section is typical only, see the technical data section of therelevant equipment documentation for data specific to a particular equipment. Reference should be made to the external connection diagram before the equipment isinstalled, commissioned or serviced. Language specific, self-adhesive User Interface labels are provided in a bag for someequipment.

When electrical equipment is in operation, dangerous voltages will be present in certain partsof the equipment. Failure to observe warning notices, incorrect use, or improper use mayendanger personnel and equipment and also cause personal injury or physical damage.

Before working in the terminal strip area, the equipment must be isolated. Proper and safe operation of the equipment depends on appropriate shipping and handling,proper storage, installation and commissioning, and on careful operation, maintenance andservicing. For this reason only qualified personnel may work on or operate the equipment. The equipment documentation gives instructions for its installation, commissioning, andoperation.

However, the manuals cannot cover all conceivable circumstances or includedetailed information on all topics. In the event of questions or specific problems, do not takeany action without proper authorization. Note: This symbol may also be used for aProtective Conductor Earth Terminalif that terminal is part of a terminalblock or sub-assembly e.

The equipment documentation should be consulted before installing,commissioning, or servicing the equipment. Terminals exposed during installation, commissioning and maintenance maypresent a hazardous voltage unless the equipment is electrically isolated.

The clamping screws of all terminal block connectors, for field wiring, using M4screws shall be tightened to a nominal torque of 1.

Equipment intended for rack or panel mounting is for use on a flat surface of aType 1 enclosure, as defined by Underwriters Laboratories UL. Any disassembly of the equipment may expose parts at hazardous voltage, alsoelectronic parts may be damaged if suitable electrostatic voltage discharge ESD precautions are not taken.

If there is unlocked access to the rear of the equipment, care should be taken byall personnel to avoid electric shock or energy hazards. Voltage and current connections shall be made using insulated crimp terminationsto ensure that terminal block insulation requirements are maintained for safety. Watchdog self-monitoring contacts are provided in numerical relays to indicatethe health of the device. The equipment must be connected in accordance with the appropriate connectiondiagram.

Protection Class I Equipment- Before energizing the equipment it must be earthed using the protectiveconductor terminal, if provided, or the appropriate termination of thesupply plug in the case of plug connected equipment. For M4 stud PCTs the integrity of theprotective earth connections should be ensured by use of a locknut orsimilar.

The recommended minimum protective conductor earth wire size is 2. The protective conductor earth connection must be low-inductance and as shortas possible. All connections to the equipment must have a defined potential. Connections thatare pre-wired, but not used, should preferably be grounded when binary inputsand output relays are isolated. When binary inputs and output relays areconnected to common potential, the pre-wired but unused connections should beconnected to the common potential of the grouped connections.

Accidental touching of exposed terminalsIf working in an area of restricted space, such as a cubicle, where there is a risk ofelectric shock due to accidental touching of terminals which do not comply withIP20 rating, then a suitable protective barrier should be provided.

Equipment useIf the equipment is used in a manner not specified by the manufacturer, theprotection provided by the equipment may be impaired. The Listedtype shall be a Class J time delay fuse, with a maximum current rating of 15 A anda minimum d. Equipment operating conditionsThe equipment should be operated within the specified electrical andenvironmental limits.

Current transformer circuitsDo not open the secondary circuit of a live CT since the high voltage producedmay be lethal to personnel and could damage insulation. Generally, for safety,the secondary of the line CT must be shorted before opening any connections toit. For most equipment with ring-terminal connections, the threaded terminal blockfor current transformer termination has automatic CT shorting on removal of themodule. Therefore external shorting of the CTs may not be required, theequipment documentation should be checked to see if this applies.

For equipment with pin-terminal connections, the threaded terminal block forcurrent transformer termination does NOT have automatic CT shorting on removalof the module. External resistors, including voltage dependent resistors VDRs Where external resistors, including voltage dependent resistors VDRs , are fittedto the equipment, these may present a risk of electric shock or burns, if touched.

Battery replacementWhere internal batteries are fitted they should be replaced with the recommendedtype and be installed with the correct polarity to avoid possible damage to theequipment, buildings and persons.

Insulation and dielectric strength testingInsulation testing may leave capacitors charged up to a hazardous voltage. At theend of each part of the test, the voltage should be gradually reduced to zero, todischarge capacitors, before the test leads are disconnected. Insertion of modules and pcb cardsModules and PCB cards must not be inserted into or withdrawn from theequipment whilst it is energized, since this may result in damage.

Insertion and withdrawal of extender cardsExtender cards are available for some equipment. If an extender card is used,this should not be inserted or withdrawn from the equipment whilst it is energized. This is to avoid possible shock or damage hazards. Hazardous live voltages maybe accessible on the extender card. Fiber optic communicationWhere fiber optic communication devices are fitted, these should not be vieweddirectly. Optical power meters should be used to determine the operation orsignal level of the device.

Contact fingers of test plugs are normallyprotected by petroleum jelly, which should not be removed. To avoid electric shock or energy hazards, after completelyisolating the supplies to the equipment both poles of any dc supply , thecapacitors should be safely discharged via the external terminals prior tode-commissioning. DisposalIt is recommended that incineration and disposal to water courses is avoided.

The equipment should be disposed of in a safe manner. Any equipmentcontaining batteries should have them removed before disposal, takingprecautions to avoid short circuits. Particular regulations within the country ofoperation, may apply to the disposal of the equipment. The protective fuseshould be located as close to the unit as possible.

This equipment requires a protectiveconductor earth connection to ensure user safety. Equipment in this category is qualification tested at5 kV peak, 1. If it is required for use in anoutdoor environment then it must be mounted in a specific cabinet of housing which willenable it to meet the requirements of IEC with the classification of degree ofprotection IP54 dust and splashing water protected.

Pollution Degree - Pollution Degree 2Altitude - Operation up to mCompliance is demonstrated by reference tosafety standards. IEC EN MiCOM P , P , P and P relays have been designed to control, protectand monitor industrial installations, public distribution networks and substations, and to beused as back-up protection for EHV and HV transmission networks.

MiCOM P , P , P and P relays provide comprehensive overcurrent phase andearth fault protection for utilities networks, industrial plants and networks as well as for otherapplications where overcurrent protection is required.

The earth fault protection is sensitiveenough to be applied in electrical networks where the earth fault current is low. In addition to its protective functions, each relay offers control and recording features.

Theycan be fully integrated to a control system so protection, control, data acquisition andrecording of faults, events and disturbances can be made available. The relays are equipped on the front panel with a liquid crystal display LCD with 2 x 16back-lit alphanumerical characters, a tactile 7 button keypad to access all settings, clearalarms and read measurements and 8 LEDs that indicate the status of MiCOM P , P , P and P relays.

In addition, the use of the RS communication port makes it possible to read, reinitialiseand change the settings of the relays, if required, from a local or remote PC computer loadedwith MiCOM S1 software. Its flexibility of use, reduced maintenance requirements and ease of integration allow the MiCOM P range to provide an adaptable solution for the problems of the protection ofelectric networks. Upon receipt, relays should be examined immediately to ensure nodamage has been sustained in transit.

Relays that are supplied unmounted and not intended to be installed immediately should bereturned with their protective polythene bags.

The electronic circuits are well protected by the metal case and the internal module shouldnot be withdrawn unnecessarily. When handling the module outside its case, care should betaken to avoid contact with components and electrical connections. If removed from the casefor storage, the module should be placed in an electrically conducting antistatic bag.

There are no setting adjustments within the module and it is advised that it is notunnecessarily disassembled. Although the printed circuit boards are plugged together, theconnectors are a manufacturing aid and not intended for frequent dismantling; in factconsiderable effort may be required to separate them.

Touching the printed circuit boardshould be avoided, since complementary metal oxide semiconductors CMOS are used,which can be damaged by static electricity discharged from the body. Discharge of these voltages into semiconductor devices when handlingelectronic circuits can cause serious damage, which often may not be immediately apparentbut the reliability of the circuit will have been reduced.

The electronic circuits are completely safe from electrostatic discharge when housed in thecase. Do not expose them to risk of damage by withdrawing modules unnecessarily. Each module incorporates the highest practicable protection for its semiconductor devices. However, if it becomes necessary to withdraw a module, the following precautions should betaken to preserve the high reliability and long life for which the equipment has been designedand manufactured.

Before removing a module, ensure that you are at the same electrostatic potential asthe equipment by touching the case. Handle the module by its frontplate, frame or edges of the printed circuit board. Avoidtouching the electronic components, printed circuit track or connectors. Do not pass the module to another person without first ensuring you are both at thesame electrostatic potential.

Shaking hands achieves equipotential. Place the module on an antistatic surface, or on a conducting surface which is at thesame potential as yourself. Store or transport the module in a conductive bag. If you are making measurements on the internal electronic circuitry of an equipment inservice, it is preferable that you are earthed to the case with a conductive wrist strap.

If a wrist strap is not available you should maintain regular contact with the case to prevent abuild-up of static. Instrumentation which may be used for making measurements should beearthed to the case whenever possible. It is strongly recommended that detailed investigations onelectronic circuitry or modification work should be carried out in a special handling area suchas described in the above-mentioned BS and IEC documents.

If an MMLG test block is to be included it should be positioned at the right-hand side of theassembly viewed from the front. Modules should remain protected by their metal caseduring assembly into a panel or rack. For individually mounted relays an outline diagram is supplied in section 6 of this chaptershowing the panel cut-outs and hole centres.

Relays must only be handled by skilled personnel. Theinstallation should be clean, dry and reasonably free from dust and excessive vibration. Thesite should be well lit to facilitate inspection.

MAARIFUL HADITH PDF

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Areva Micom P122

Areva micom p overcurrent relay pc00fbe. Free shipping. Condition: Used removed from a working control system that was upgraded. Skip to main content. Email to friends Share on Facebook - opens in a new window or tab Share on Twitter - opens in a new window or tab Share on Pinterest - opens in a new window or tab.

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