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NG TS 3.24.63 - NATIONAL GRID TECHNICAL SPECIFICATIONS - MESH STATION DAR AND PLANT ISOLATION - ISSUE 1 Organization: NG
Date: 2001-05-01
Description: This specification describes the functional and performance requirements for post-fault automatic switching (DAR and plant isolation) for National Grid’s Mesh type substations. For the purposes of this specification Mesh type substations encompasses: four-switch mesh, three-switch with bypass, singleswitch, banked plant substations and other related configurations operating at 400, 275 and 132 kV.
BIS - IS 3278 - DIMENSIONS FOR DETACHABLE COAMING COVERS AND WIRE MESH GRIDS FOR STEEL COWL VENTILATORS Organization: BIS
Date: 1966-01-01
NG TS 3.24.06 - NATIONAL GRID TECHNICAL SPECIFICATIONS - MESH CORNER BAY FUNCTIONS (INCORPORATING THE ASSOCIATED FEEDER AND TRANSFORMER HV BAY FUNCTIONS) - ISSUE 1; INCORPORATING ADDENDUM NO. 1: 2010 Organization: NG
Date: 2001-10-01
Description: This specification, in conjunction with related functional specifications, details the protection, control and measurements functions and the associated interconnectivity which are required within light current systems on mesh corner bays at Mesh substations on National Grid’s 400, 275 and 132kV transmission system.
NASA - NACA-TM-1003 - THE RESISTANCE COEFFICIENT OF COMMERCIAL ROUND WIRE GRIDS Organization: NASA
Date: 1942-01-01
Description: In the arrangement of two grids in tandem, which was necessary in order to obtain high resistance coefficients with the solidity, that is, mesh density of grid, was found to be accompanied by a further relationship with the mutual spacing of the individual grids.
NG TS 3.06.14 - NATIONAL GRID TECHNICAL SPECIFICATIONS - COPPERWORK PROTECTION - ARCHIVED; ISSUE 3 Organization: NG
Date: 1999-02-01
Description: This Specification covers: (i) The protection of common connections between two or more plant items, where there is no separating circuit breaker, eg mesh corner. (ii) The protection of transformer HV and LV connections, or mechanically switched capacitor (MSC) connections, where separate zones of protection from the plant protection are required.
NG TS 3.24.65 - NATIONAL GRID TECHNICAL SPECIFICATIONS - OVERALL PROTECTION - ISSUE 1 Organization: NG
Date: 2000-06-01
Description: (c) 400 kV, 275 kV and 132 kV copperwork connections including; Mesh Corners, Transformer HV and LV Connections, Transformer Stub End and Feeder Stub End.
NG TS 3.24.16 - NATIONAL GRID TECHNICAL SPECIFICATIONS - DELAYED AUTOMATIC RECLOSING (DAR) - ISSUE 1 Organization: NG
Date: 2000-05-01
Description: This specification describes the functional and performance requirements for single shot three-phase Delayed Automatic Reclosure (DAR) for busbar connected feeder circuits and transformer LV circuit breakers, when the transformer's HV connection is banked/connected to a mesh/busbar corner. Figure 1 illustrates typical applications.
NG TS 3.06.08 - NATIONAL GRID TECHNICAL SPECIFICATIONS - CIRCUIT BREAKER FAIL PROTECTION - ARCHIVED; ISSUE 3 Organization: NG
Date: 1999-03-01
Description: It does not cover the requirements for back tripping systems associated with busbar protection or mesh corner protection which are specified in NGTS 3.6.3 and NGTS 3.6.14 respectively.
SAE/TP - 2007-01-3310 - APPLICATION OF FENSAP-ICE-UNSTEADY TO HELICOPTER ICING Organization: SAE/TP
Date: 2007-09-24
Description: The unsteady rime ice accretion is simulated by coupling, at each time step, flow and water drop equations to the Messinger icing model. Mesh displacement effects are taken into account by an Arbitrary Lagrangian-Eulerian method.
NG TGN(E) 182 - TECHNICAL GUIDANCE NOTES - STANDARD BAY DESIGNS – APPLICATION GUIDANCE FOR CONNECTION TO THE TRANSMISSION SYSTEM AT 132 KV, 275 KV AND 400 KV - ARCHIVED; ISSUE 1 Organization: NG
Date: 2003-06-01
Description: The guidance caters for commonly found bays within the transmission system (feeder, transformer, section, coupler and mesh). A design should provide a cost effective, safe connection, which is simple to install, commission and manage for its whole service life.
IEEE 81.2 - GUIDE FOR MEASUREMENT OF IMPEDANCE AND SAFETY CHARACTERISTICS OF LARGE, EXTENDED OR INTERCONNECTED GROUNDING SYSTEMS Organization: IEEE
Date: 1991-01-01
Description: ScopeTest methods and instrumentation techniques used to measure the ac characteristics of large grounding systems include the following topics: 1) Measurement safety 2) Earth-return mutual errors 3) Low-current measurements 4) Power-system staged faults 5) Communication and control cable transfer impedance 6) Current distribution (current splits) in the grounding system 7) Step, touch, mesh, and profile measurements 8) The foot-equivalent electrode earth resistance 9) Instrumentation characteristics and limitations Grounding electrodes consisting of a single ground rod, arrays of ground rods, tower footings, and many grids (if no external grounding is connected) can be measured, interference voltages permitting, with methods outlined in IEEE Std 81-1983 [2] 1 .
VDI 3834 BLATT 1 - MEASUREMENT AND EVALUATION OF THE MECHANICAL VIBRATION OF WIND TURBINES AND THEIR COMPONENTS - WIND TURBINES WITH GEARBOX Organization: VDI
Date: 2015-08-01
Description: The series of standards VDI 3834 does not apply to the evaluation of torsional vibration in the drive train nor to the condition of the rolling element bearings and gear meshes. Techniques to assist the detection of rolling element bearing and gearbox defects can be found in VDI 3832 and DIN ISO 13373-2.

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