Kazikinos The Ordering Authority should order for supply of all the associated units along with main equipment for installation and exploitation on board ship. Following draft documents shall be presented for approval of Indian Navy. Each winding of prime-mover motor shall be provided with a thermister and these thermisters are to be connected in such a way that only two leads shall come out of the motor for connection inside the control panel. Each equipment is uss be subjected to sjs of the following tests: Short Circuit Requirements Flexible Cable Assemblies portable. The voltage limits for normal operation may be exceeded during the following starting conditions: All parameters are to be checked after 45 minutes.
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Vozuru In addition, extended endurance testing of prototype equipment is required to be carried out before approval for their use can be granted. The enclosure protection of various equipment shall be as follows: Cable size i ii iii iv 3 No.
Peak AC voltage is the maximum absolute value of the instantaneous voltage. Over Voltage Protection Unit. Information Supplied While Tendering 7 5. The supplier shall supply one set of installation and commissioning spares. The equipment with PCBs in place will be switched on at room temperature for hours. The fixing position for shock vibration mountings are to be such that the height of the machine center of gravity above the plane of fixing does not exceed one half of the minimum span of the mountings.
The main power is derived from aircraft generators driven jsd the aircraft propulsion engines. Wave Form Harmonic Content. The test will comprise of: Further all the equipment be supplied with shock mounts. Voltage modulation amplitude is the difference between the maximum and minimum AC jse values that occur in a one second period during steady state operating conditions. Jss 01 Template Steady state is that condition in which the characteristics remain within the limits for normal operation steady state characteristics throughout an arbitrarily long period of time.
The first rectifier of a new design is to be nss to type test in accordance with clause of NES Transfer operation occurs when the electric system transfers between power sources, including transfers from or to external power sources.
The rectifier is likely to cause waveform harmonics and electromagnetic noise to be fed back into the input supply. Power supplies to control circuits are to be protected by fuse. The test parameters will be recorded in an on-line oscilloscope with graphic recorder to obtain real time performance data. The hand regulator system is to be as independent of the AVR circuitry as possible.
Sources of voltage modulation may include, but are not limited to, voltage regulation stability of the AC power source, generator speed variations. For the purpose of this EED-Q, the definitions that apply in addition to the general terminology are contained in succeeding paragraphs.
In addition, it is the responsibility of the main contactor to arrange for the equipment to be tested as a complete installation with all its ancillaries including fans, heat exchangers, control switches etc. The gland nut and washers are to be left undrilled. The converter shall be manufactured to deliver AC power of singlephase or three- phase wye- connected grounded neutral having a nominal Voltage of Volts having following characteristics: In case of motor alternator, the coupling set must be direct coupled type only belt or gear driven not permitted.
Any correction applied for different environmental and installation conditions shall be duly notified to concerned Naval Agencies, seeking their approval. Maximum output voltage drop and recovery period during load state. By and large, the equipment should have components of indigenous make. Supply interruptions lasting up to five seconds must not cause malfunction of the equipment and normal performance must be restored automatically on restoration of the supply.
Unless otherwise specified, means are to be provided in the output of the equipment to prevent excessive voltage rise on o-load. Experience in Fleet use indicates a significant proportion of static conversion equipment failures occur as a result of overheating. Jes frequency converter set design is to permit ready removability of the item without undue disturbances to the system. The equipment offered for marine applications shall achieve specified output and function smoothly under tropical conditions.
The equipment must be designed so that the maximum permissible operating temperature of components is not exceeded during normal operating conditions in a maximum ambient temperature as specified in this specification. Cable size Gland Size i 2 No.
Standard specification and grade of material of each component used to be indicated in the binding drawings. Steady state AC voltage is the time average of the RMS voltage over a period not to exceed one second. The equipment shall comply with either of the following standards to be specified in SOTRs: The following protection principles are to apply to all rectifiers: Abnormal operation occurs when a js or failure in the electric system has iss place and the protective devices of the system are operating to remove the malfunction or failure from the remainder of the system before the limits for abnormal operation are exceeded.
Aircraft Electric Power Systems. Automatic control of frequency be provided for frequency converter. All tallies and diagram plates shall be of anodized aluminium alloy. Related Articles.
Garamar Deck mounted equipment shall be designed to ensure that no live part is less than 12 inches from the deck. Cable size Gland Size i 2 No. The rectifier shall be manufactured to the following specifications: The frequency converter is to be brushless excitation type. The equipment shall be made from approved material as specified in the specification NES Any deviation from the mentioned specifications will have to be brought to the notice of Naval Headquarters and approval to be taken for the same. Detailed measurements should be carried out at the appropriate stage of manufacturing.
JSS 0251 PDF
Vozuru In addition, extended endurance testing of prototype equipment is required to be carried out before approval for their use can be granted. The enclosure protection of various equipment shall be as follows: Cable size i ii iii iv 3 No. Peak AC voltage is the maximum absolute value of the instantaneous voltage. Over Voltage Protection Unit. Information Supplied While Tendering 7 5. The supplier shall supply one set of installation and commissioning spares. The equipment with PCBs in place will be switched on at room temperature for hours.