Electric Shock Investigation Test Equipment
Contents
1. Test plates are used to simulate contact with surfaces such as concrete or the ground The 200x100 plate is to be used to simulate the contact of both feet and the 100x100 plates are for hand or foot contact The plate s should be placed on or against the shock point s and pressure exerted or weight applied to the plate s similar to the pressure or weight of the contact for the shock incident The lead of the measuring instrument should be attached to the screw on the plate or a test probe held onto the surface of the plate The other meter probe should be attached to the other contact point The plates should not be used if they become corroded 7 Instrument Operation Check The instruments may be check for operation as follows Instrument Test 1 Test 2 Low Impedance Plug the Network into the multimeter Leave the Network plugged into the meter on the Network Turn the meter onto the resistance range resistance range and connect test leads into the The meter should read 50kQ Network Short the leads and the meter should read 0Q Filter 3 Plug the filter into the multimeter Turn Leave the filter plugged into the meter on the the meter onto the resistance range The resistance range and plug test leads into the filter meter should read 500Q Short the leads and the meter should read 375Q Filter 4 Plug the filter into the multimeter Turn Leave the filter plugged into the meter on the the meter onto the2. The following provides a brief summary of the purpose of the equipment Please refer to AS NZS60990 for more detailed explanation of the filters AS NZS60479 AS NZS3760 and numerous equipment standards will provide detail of the acceptability or otherwise of test results 4 1 Low Impedance Network 50kQ Black Red Sockets High impedance multimeters measure the initial shock voltage This voltage is likely to reduce once contact is made through the human body This Low Impedance Network allows the operator to measure the sustained voltage at 50kQ If this measured voltage is less than 50 volts then CIC filters No 4 and No 5 can be used as they have been designed to a maximum voltage of 50 volts The voltage measured has no relation to the sustained voltage a person is likely to receive as a person s total body impedance is much lower than 50kQ 4 2 Unweighted Touch Current Filter No 3 Large Area Contact Black Blue Sockets This filter is used to measure touch currents that are likely to flow through the human body where the shock voltage is less than 300 volts and where contact has been made with a large area as per AS60479 1 It is likely to be used for electrocutions or severe injuries This filter will provide an over estimation of the likely touch current for smaller contact area shocks This filter is designed to AS NZS 60990 2002 and is for INTERMITTENT USE ONLY 4 3 Perception Reaction Touch Current Filter N
3. The initial shock voltage is measured by using the high impedance meter on its own to measure across the shock path e The sustained shock voltage at 50kQ is measured by placing the Low Impedance Network into the meter test leads plugged into the Network and measurements taken across the shock path f The likely touch current is then measured using one of the Filters plugged into the meter Select the filter using g the following reasoning Filter No 3 is used where the sustained shock voltage is over 50 volts typically where there has been an electrocution severe injury or a large shock Filter No 4 is used to measure tingles or to check reinforced or double insulated equipment is safe to use The maximum touch current for reinforced or double insulated appliance should be measured by using the socket outlet earth as the second contact point Filter No 5 is used to measure shock voltages where the sustained shock voltage is under 50 volts and the person has locked on The likely touch current is determined by using Ohm s Law i e dividing the voltage measured by any of the three filters by 500Q The result of this calculation is best expressed in milliamps i e multiply the answer in amps by 1 000 to convert to milliamps Alternatively the voltage could be measured in millivolts and this value when divided by 500 will give a result that is in milliamps 6 Metal Test Plate Operating Instructions
4. resistance range The resistance range and plug test leads into the filter meter should read 10 5kQ Short the leads and the meter should read 10 37kQ Filter 5 Plug the filter into the multimeter Turn Leave the filter plugged into the meter on the the meter onto the resistance range The resistance range and plug test leads into the filter meter should read 10 5Q Short the leads and the meter should read 10 37kQ Some minor variations can be expected in the test results 8 Storage Instruments must be stored appropriately to prevent damage and contamination of the banana plugs and sockets Plates are to be stored to prevent corrosion Manufactured by GIG Ph 02 4268 3571 Shock Investigation Test Equipment User Guide Version 3 9 Trouble shooting Problem Cause Solution The lack of readings when using the Dirty plugs or sockets a Banana plugs and sockets can be cleaned using low impedance network or the filters a cotton bud The meter should read some small b Appropriate storage is recommended to prevent voltage even for a relatively low the plugs and sockets from becoming dirty energy induced voltage c Test the instruments as detailed at Section 7 to ensure correct operation 10 Repair and Maintenance The test units detailed in this user guide are not serviceable and will need to be removed from service if damaged or become inaccurate The test units may be cleaned usin
5. 268 3571 Fax 02 4268 3042 Mobile 0429 368 775 Manufactured by GIG Ph 02 4268 3571
6. Shock Investigation Test Equipment User Guide Version 3 Electric Shock Investigation Test Equipment User Guide 1 Introduction The shock investigation test equipment manufactured by OIC is used in the investigation of electric shock incidents or to establish if reinforced double insulated equipment is suitable for use Please read this user guide before using instruments and follow all safety instructions and warnings 2 Safety Warnings A The following safety warnings must be read and understood before the equipment is used and complied with during use A hazard and risk assessment process must be carried out before use and risks adequately controlled or work should not continue Circuit connections and exposed metalwork must not be touched during testing Safe working procedures and practices must be followed Precautions such as insulated gloves are to be utilised during testing The instruments are not to be used if damaged in any way and should be destroyed and disposed of if damaged Test leads must be in good working order and inspected before and after use Fused test leads should be utilised Hands are to remain behind guards of probes clips or plugs The equipment is to be used by suitably trained and competent persons only 3 Symbols A Caution risk of danger refer to the safety requirements of this user guide A Caution risk of electric shock o Reinforced insulation 4 Equipment Use
7. g warm water and should not be used until dry Metal test plates shall be cleaned if they start to corrode 11 Technical Specification A g Unweighted Touch Perception Reaction Let go Touch Specification Low Impedance Metal Test Current Filter No 3 Touch Current Current Item g X Network 50kQ Plates Large Area Contact Filter No 4 Filter No 5 Input Voltage 0 300V 0 50V S 0 50V 0 300V N A Input Frequency 0 50Hz 0 50Hz 0 50Hz 0 50Hz N A Power 45 Watts 1 25 Watts 1 25 Watts 1 8 Watts N A Accuracy 5 5 5 5 N A Battery Nil Nil Nil Nil N A 200x100x3mm Approx Size 45x30x35mm 40x30x15mm 40x30x15mm 40x30x15mm 100x100x3mm 495g Approx Weight 80g 30g 30g 30g 250g Accessories Nil Nil Nil Nil Nil Pressure weight Input 4mm Banana 4mm Banana against plate to d 4mm Banana Sockets 4mm Banana Sockets Connections Sockets Sockets simulate shock contact 4mm Banana Output 4mm Banana Shrouded 4mm Banana Shih 4mm Banana Screw for Connections Plugs Shrouded Plugs a k Shrouded Plugs alligator clamp ugs Protection IP64 IP64 IP64 IP64 N A AS NZS Draft IEC AS NZS 60990 2002 AS NZS 60990 2002 N A Design Standard 60990 2002 61201 Designed to AS NZS61010 1 2003 as far as practicable N A N A 12 Manufacturer Manufactured in Australia by Communication Interference Consultants GIG 61 High Street PO Box 509 Thirroul NSW 2515 Telephone 02 4
8. o 4 Black Yellow Sockets This filter is used to measure touch currents that are likely to flow through the human body where perception reaction are the dominant consideration i e for tingles This filter is designed for use for sustained voltages of less than 50 Volts The low impedance network must be used to establish if the sustained voltage is less than 50 volts so this instrument can be used This filter is designed to AS NZS 60990 2002 4 4 Let go Touch Current Filter No 5 Black Blue sockets This filter is used to measure touch currents where let go is the dominant consideration i e the person has locked on This filter is designed for use for sustained voltages of less than 50 Volts The low impedance network must be used to establish if the sustained voltage is less than 50 volts so this instrument can be used This filter is designed to AS NZS 60990 2002 Manufactured by GIG Ph 02 4268 3571 Shock Investigation Test Equipment User Guide Version 3 5 Low Impedance Network and Filter Operating Instructions a A high impedance voltmeter or multimeter gt 1 MQ on the voltage range is to be used for all measurements The meter must also be suitably accurate b Measurements are to be taken observing safety warnings precautions and following safety working procedures and practices c The meter is to be turned on and placed on the required voltage range for the particular test being carried out d
Download Pdf Manuals
Related Search