EXPLANATORY INFORMATION - Surgetek

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2. Operating Rods:Switching Rods, FuseTongs, Voltage Detectorsand Phase ComparatorsDIN VDE 0681/0682 define anoperating rod as an equipment formanually operating, testing, and guardinglive appliances. It consists of one or moreinsulating rods rated at the nominalvoltage and the appropriate operatinghead for the application in question.Examples of operating rods are switchingrods, voltage detectors and phasecomparators for the range above 1 kV.They are marked or on the equipmentlabel.Design of operating rodsAn operating rod consists of a handle, aninsulating element and an operating head.An operating head is that part of theoperating rod containing the contactelectrode, e.g. the head of a switching rodor the indicator of a voltage detector orphase comparator.An insulating element is that section ofthe operating rod between handguard andred ring. It provides an adequate safetydistance and a safe insulation for the user.A contact electrode extension is that partof the operating rod between theinsulating element and the contactelectrode of an operating head. It permitsaccess to distant parts of the system,allows the operating head to be movedpast live parts and elimininates the effectsof interference fields on voltage detectors.The handguard is a distinctive physicalguard separating the handle for theresistive or insulating element. Itspurpose is to prevent the hand fromslipping and passing into contact with theresistive or insulating element.The red ring marks the end of theinsulating element in the direction of theoperating head. It provides the user with avisible limit of contact with live parts ofthe system.The insulating element between red ringand hand guard must not come intocontact with live parts, but may rest ongrounded parts.The test electrode of a voltage detector isthe part of the indicator which contactsthe section of the installation to be tested.It its the operating element of the voltagedetector.Switching Rod12345l Gl Vl H l ll O6Fuse Tongs Voltage Detector712345l H l l l Ol Gl V566Phase Comparator2134l H l l l Ol G7l Vl OMinimum Lengths of Insulating Elements for1) operating rods according to DIN VDE 06812) voltage detectors according to IEC/EN 61243-1 (DIN VDE 0682 Part 411)3) phase comparator according to IEC/EN 61481 (DIN VDE 0682 Part 431)Nominal Voltage Rated Minimum Length of Insulating ElementU N (kV) Voltage L I min (mm)U r (kV) 1) 2) 3)up to 10 12 500 525 52520 24 500 525 52530 36 525 525 52545 52 720 900 —60 72.5 900 900 —110 123 1300 1300 —150 170 1750 1750 —220 245 2400 2400 —380 420 3200 3200 —142134561 Operating head2 Red ring3 Insulating element of length I I4 Handguard5 Handle of length I H6 End piece7 Test electrodel H l ll GI V Length of contact electrode extensionI O Length of upper sectionI G Total length of operating rod
There are basically two types of operating rods:Type A:Not for use in wet weather !Can be used in indoor and outdoor systems, but not in wet weather.PHV Phase ComparatorSwitching RodFuse TongsType B:Also for use in wet weatherCan be used in indoor and outdoor systems under all weather conditions (even whereoperating rods may become damp).PHE III Voltage DetectorPHE III Test HeadPHE Voltage DetectorDC Voltage Detector PHE/GDistance Voltage Detector HSA 194PHV I Phase ComparatorSwitching RodsA further type of operating rod is used for voltage detectors:Type C:Only for use in indoor systems!Can be used in indoor systems at light intensities up to 1000 luxPHG II Voltage Detector15
Page 1: EXPLANATORY INFORMATION1. VDE - Reg
Page 5 and 6: Types:Due to the variety of existin
Page 7 and 8: 5. Equipment for Earthing andShort-
Page 9 and 10: Example of Calculation:Given:Load b

EXPLANATORY INFORMATION - Surgetek

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