Areva MiCom P Pdf User Manuals. View online or download Areva MiCom P Technical Manual. INTRODUCTION The overcurrent relays of the MiCOM P range are AREVA T&D universal overcurrent relays.. P and P relays have been designed to . The overcurrent relays of the MiCOM P range are Areva T&D universal overcurrent relays. MiCOM P, P, P and P relays have.
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Published on Mar View 4. The technical data in this Safety Section is typical only, see the technical data section of the relevant equipment documentation for data specific to a particular equipment. Before carrying out any work on the equipment the user should be familiar with the contents of this Safety Section and the ratings on the equipments arega label.
Reference should be made to the external connection diagram before the equipment is installed, commissioned or serviced.
Language specific, self-adhesive User Interface labels are provided in a bag for some equipment. When electrical equipment is in operation, dangerous voltages will be present in certain parts of the equipment. Failure to observe warning notices, incorrect use, or improper use may endanger personnel and equipment and cause arefa 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 and servicing. For this reason only qualified personnel may work on or operate the equipment. Qualified personnel are individuals who: Are familiar with the installation, commissioning, and operation of the equipment and of the system to which it is being connected; Are able to safely perform switching operations in accordance with accepted safety engineering practices and are authorized to energize and de-energize equipment and to isolate, ground, and label it; Are trained in the care and use of safety apparatus in accordance with safety engineering practices; Are trained in emergency procedures first aid.
The equipment documentation gives instructions for its installation, commissioning, and operation. However, the manuals cannot cover all conceivable circumstances or xreva detailed information on all topics. In the event of questions or specific problems, do not take any action without proper authorization.
The equipment documentation should commissioning, or servicing the equipment.
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Any disassembly of the equipment may expose parts at hazardous voltage, also pp122 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 by all personnel to avoid electric shock or energy hazards. Voltage and current connections should be made using insulated crimp terminations to ensure that terminal block insulation requirements are maintained for safety.
Watchdog self-monitoring contacts are provided in numerical relays to indicate the health of the device. To ensure that wires are correctly terminated the correct crimp terminal and tool for the wire aeeva should be used. The equipment must be connected in accordance with the appropriate connection diagram.
Protection Class I Equipment Before energizing the equipment it must be earthed using the protective conductor terminal, if provided, or the appropriate termination of the supply plug in the case of plug connected equipment.
The protective conductor earth connection must not be removed since the protection against electric shock provided by the equipment would be lost. When the protective earth conductor terminal PCT is also used to terminate cable screens, etc.
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For M4 stud PCTs the integrity of the protective earth connections should be ensured by use of a locknut or similar. The protective conductor earth connection must be low-inductance and as short as possible.
All connections to the equipment must have a defined potential. Connections that are pre-wired, but not used, should preferably be grounded when binary inputs and output relays are isolated. When binary inputs and output relays are connected xreva common potential, the pre-wired but unused connections should be connected to arevs common potential of the grouped connections.
Before energizing the equipment, the following should be checked: Equipment Use If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired. Equipment operating conditions The equipment should be operated within the specified electrical and environmental limits.
Current transformer circuits Do not open the secondary circuit of a live CT since the high voltage produced may be lethal to personnel and could damage insulation. Generally, for safety, the secondary of the line CT must be shorted before opening any connections to it.
For most equipment with ring-terminal connections, the threaded arevz block for current transformer termination has l122 CT shorting on removal of the module. Therefore external shorting of the CTs may not be required, the equipment documentation should be checked to see if this applies.
For equipment with pin-terminal connections, the threaded terminal block for current transformer termination does NOT have automatic CT shorting on removal of the module. External resistors, including voltage dependent resistors VDRs Where external resistors, including voltage dependent resistors VDRsare fitted to the equipment, these may present a risk p122 electric shock or burns, if touched. Battery replacement Where internal batteries are fitted they should be replaced with the recommended type and be installed with the correct polarity to avoid possible damage to the equipment, buildings and persons.
Insulation and dielectric strength testing Insulation testing may leave capacitors charged up to a hazardous voltage. At the end of each part of the test, the voltage should be gradually reduced to zero, pp122 discharge capacitors, before the test leads are disconnected.
Insertion of modules and pcb cards Modules and PCB cards must not be inserted into or withdrawn from the equipment whilst it is energized, since this may result in damage. Insertion and withdrawal of extender cards Extender cards are available for some equipment. If arwva extender card is used, this should not be inserted xreva withdrawn from the equipment whilst it is energized.
This is to avoid possible shock or damage hazards. Hazardous live voltages may be accessible on the extender card. Fiber optic communication Where fiber optic communication devices are fitted, these should not be viewed directly.
Optical power meters should be used to determine the operation or signal level of the device. Cleaning The equipment may be cleaned using a lint free cloth dampened with clean water, when no connections are energized.
Contact fingers of test plugs are normally protected by petroleum jelly, which should not be removed. To avoid electric shock or energy hazards, after completely isolating the supplies to the equipment both poles of any dc supplythe capacitors should be safely discharged 1p22 the external terminals prior todecommissioning.
Disposal It is recommended that incineration and disposal to water courses is avoided. The equipment should be disposed of in a safe manner. Any equipment containing batteries should have them removed before disposal, taking precautions to avoid short circuits.
Particular regulations within the country of operation, may apply to the disposal of the equipment. The protective fuse should be located as close to the unit as possible. This equipment requires a protective conductor earth connection to ensure user safety. Distribution level, fixed aareva. Equipment in this category is qualification tested at 5 kV peak, 1. If it is required for ageva in an outdoor environment then it must be mounted in a specific cabinet of housing which will enable it to meet the requirements of IEC with the classification of degree of protection IP54 dust and splashing water protected.
MiCOM P, P, P and P relays have been designed to control, protect and monitor industrial installations, public distribution networks and substations, and to be used as back-up protection for EHV and HV transmission networks. The goal of this manual is to allow the user to become familiar with the application, installation, setting and commissioning of these relays.
Arevx manual has the following format: MiCOM P, P, P and P relays provide comprehensive overcurrent phase and earth fault protection for utilities networks, industrial plants and networks as well as for other applications where overcurrent protection is required.
The earth fault protection is sensitive enough 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. They can be fully integrated to a control system so protection, control, data acquisition and recording of faults, events and disturbances can be made available. The relays arevs equipped on the front panel with a liquid crystal display LCD with 2 x 16 back-lit alphanumerical characters, a tactile 7 button keypad to access all settings, clear alarms 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, reinitialise and change the settings of the relays, if required, from a local or remote PC computer loaded with MiCOM S1 software.
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Its flexibility of use, reduced maintenance requirements areav ease of integration allow the MiCOM P range to provide an adaptable solution for the problems of the protection of electric networks. Upon receipt, relays should be examined immediately to ensure no damage has been sustained in transit.
Relays that are supplied unmounted and not intended to be installed immediately should be returned with their protective polythene bags.
The electronic circuits are well protected by the metal case and the internal module should not be withdrawn unnecessarily. When handling the module outside its case, care should be taken to avoid contact with components and electrical connections. If removed from the case for 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 not unnecessarily disassembled.
Although the printed circuit boards are plugged together, the connectors are a manufacturing aid and not intended for frequent dismantling; in fact considerable effort may be required to separate them. Touching the printed circuit board should 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 handling electronic circuits can cause serious damage, which often may not be immediately apparent but the reliability of the circuit will have been reduced.
The electronic circuits are completely safe from electrostatic discharge when housed in the case. 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 be taken to preserve the high reliability and long life for which the equipment has been designed and manufactured. Before removing a module, ensure that you are at the same electrostatic potential as the equipment by touching the case.
Handle the module by its frontplate, frame or edges of the printed circuit board. Avoid touching the electronic components, printed circuit track or connectors.
Do not pass the module to another person without first ensuring you are both at the same electrostatic potential. Shaking hands achieves equipotential. Place the module on an antistatic surface, or on a conducting surface which is at the same 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 in service, it is preferable that you are earthed to the case with a conductive wrist strap.
Wrist straps should have a resistance to ground between k 10M. If a wrist strap is not available you should maintain regular contact with the case to prevent a build-up of static. Instrumentation which may be used for making measurements should be earthed to the case whenever possible. It is strongly recommended that detailed investigations on electronic circuitry or modification work should be carried out in a special handling area such as 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 the assembly viewed from the front. Modules should remain protected by their metal case during assembly into a panel or rack. For individually mounted relays an outline diagram is supplied in section 6 of this chapter showing the panel cut-outs and hole centres.