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PRODUCT SAFETY SOLUTIONS

USER’S MANUAL

LEAKAGE CURRENT TESTER

MODEL

LT-952HC

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Содержание LT-952HC

Страница 1: ...PRODUCT SAFETY SOLUTIONS USER S MANUAL LEAKAGE CURRENT TESTER MODEL LT 952HC...

Страница 2: ...s 2 Product purpose 2 Understanding Leakage Current 3 Before using 5 PRODUCT COMPONENTS 6 PRODUCT SPECIFICATIONS 10 OPERATING INSTRUCTIONS 11 THEORY OF OPERATION 14 REFERENCE STANDARDS 17 MAINTENANCE...

Страница 3: ...CURRENT TESTING IS INHERENTLY HAZARDOUS RISK OF ELECTRIC SHOCK KEEP HANDS AND FINGERS AWAY FROM ENERGIZED COMPONENTS AT ALL TIMES NO USER SERICEABLE PARTS INSIDE SERVICING BY QUALIFIED SERVICE PERSON...

Страница 4: ...easure leakage from surface to surface or surface to ground as required by many Safety Standards Rear panel jacks provide access to the Body Circuit Impedance to observe the wave shape of the leakage...

Страница 5: ...meter with precision impedance correlating to the impedance of the human body is used to represent the human body Extensive tests have been done to approximate the impedance of the human body These t...

Страница 6: ...before attempting to use the Leakage Tester Operation and use of the LT 952HC is to be performed by Qualified Personnel ONLY WARNING Person s using this device should have proper education training i...

Страница 7: ...Front Panel A Neutral Open Closed Switch B Line Forward Reverse Switch C Ground Open Closed Switch D LCD Display E Power On Off Switch F D U T Device Under Test Receptacle G Open Closed Ground Indicat...

Страница 8: ...hould be lit For safety the LT 952HC is designed to disable both the front and rear panel outlets when the power switch is OFF F D U T OUTLET Provides a convenient way to connect 120 Volt 15 Amp produ...

Страница 9: ...er measurement circuit is connected to the meter reference This connection is used to measure the leakage between an exposed metal surface and the meter reference point PRODUCT COMPONENTS Rear Panel W...

Страница 10: ...r source B VOLTAGE SELECT SWITCH This switch configures the LT 952HC to run off either 100 120 or 200 240 VAC The switch must be set to the proper position before power is applied to the LT 952HC C D...

Страница 11: ...70 C Humidity 80 R H 0 C to 35 C Overall Dimensions 11 1 2 in W x 13 1 2 in D x 5 1 4 H in 29 2 cm W x 34 3 cm D x 13 33 cm H Overall Weight 9 0 lb 4 0 Kg Body Circuit Precision network in accordance...

Страница 12: ...verify that there are no other grounds to the equipment under test connect an ohmmeter between the ground pin on the product under test and the power system ground Readings of close to 0 Ohms indicat...

Страница 13: ...at you or another person cannot accidentally come into contact with the product during the test Since the product ground is disconnected while the Ground switch is toggled OPEN the product under test...

Страница 14: ...Within a few seconds the display on the LT 952HC should settle to the final leakage current value If the displayed result is less than 20mA operate the Range switch to the 2mA position 8 IEC60950 spe...

Страница 15: ...MEASUREMENT CIRCUIT THE RESULT IS EXCESSIVE CURRENT THROUGH THE METER THAT CAN CAUSE THE METER FUSE TO BLOW THEORY OF OPERATION This section of the manual contains a description of the circuitry used...

Страница 16: ...l banana jacks meter reference switch and ground switching circuit The front panel Meter Connection switch a DP3T type is used to select between the various inputs The three possible meter connections...

Страница 17: ...tacle is dead Solution The front panel receptacle is designed to be disabled whenever the LT 952HC is connected to a 240 Volt source Check the position of the rear panel Voltage Selector switch Soluti...

Страница 18: ...meter circuit to the ground REFERENCE STANDARDS 60950 60335 and IEC 1010 based Standards MAINTENANCE STORAGE See the instructions in the Calibration section of this manual No other periodic maintenan...

Страница 19: ...able to generate technically valid results The exclusive use of calibration service providers which have been recognized by an independent accreditation body as conforming to the requirements of ISO...

Страница 20: ...unit caused by excessive overload Furthermore this warranty does not cover damage caused by use of any attachment not original equipment of the product In addition ED D shall not be liable for any da...

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