Product Overview: Vanguard SGT-200 Safety Ground Tester
Vanguard SGT-200 Safety Ground Tester
The Vanguard SGT-200 Safety Ground Tester is a 200A DC micro-ohmmeter designed specifically to measure the resistance of protective in-service grounding and jumper cable assemblies. The SGT-200 can measure the resistance of the grounding cables, clamps and ferrules. The measured resistance values can be compared against the calculated values (using the ASTM 2249-03 standard) and a Pass/Fail result can be printed along with the measured resistance values. Since the SGT-200 uses a DC current, there is no need to uncoil the cable under test. It can be conveniently tested in its coiled state in a much smaller testing enviornment.
The SGT-200 can measure resistance value from 1 micro-ohm to 1000 milliohms. A typical test requires the two ends of the safety ground cable to be connected to the terminals of the SGT-200. The resistance of the cable and ferrules can then be measured. If the cable size, cable length and temperature are provided, the SGT-200 will determine if the cables passes or fails the test and a pass/fail indicator will be printed on the test report.
Test results are printed on the unit’s built-in 2.5” thermal printer. A 44-key QWERTY-style rugged membrane keypad is used to input information and control the SGT-200. A back-lit graphic LCD screen (128 x 64 pixels) is used to display menus and test results.
The SGT-200 can store up to 100 test records in its internal memory. It also features a USB Flash drive interface port that can be used to store test data in a USB flash drive (not included). The SGT-200 also features an RS-232C port that is used for factory diagnostics and calibration. Test records can be reviewed and printed on a PC using the provided Vanguard VUS software.
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TYPE |
Safety Ground Tester |
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PHYSICAL SPECIFICATIONS |
Dimensions: 21”W x 8”H x 14” D (53.3 cm x 20.3 cm x 35.6 cm) |
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INPUT POWER |
100 – 240 Vac, 50/60 Hz |
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RESISTANCE READING RANGE |
1 micro-ohm to 1000 milliohms (max 1.5 milliohms @ 200A, 450 milliohms @ 10A, 1000 milliohms @ 1A) |
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TEST CURRENT RANGE |
10A – 200A (selectable in 1A steps); thermally protected DC power supply |
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ACCURACY |
10A – 49.9A: 1% ±2 micro-ohms |
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TEST VOLTAGE |
5 Vdc |
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DISPLAY |
Back-lit LCD screen (128 x 64 pixels); viewable in bright sunlight and low-light levels |
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KEYPAD |
Rugged, 44-key ‘QWERTY’ membrane keypad |
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INTERNAL TEST RECORD STORAGE |
100 test records |
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EXTERNAL TEST RECORD STORAGE |
Up to 999 test records on external USB flash drive |
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PC SOFTWARE |
Windows®-based analysis software is included with purchase price |
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COMPUTER INTERFACES |
One RS-232C PC interface, one USB flash drive interface |
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PRINTER |
Built-in 2-1/2” wide thermal printer |
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SAFETY |
Designed to meet IEC 61010 (1995), UL 61010-a, and CAS-C22.2 standards |
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TEMPERATURE |
Operating: -10°C to +50°C (+15°F to +122°F) |
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HUMIDITY |
90% RH @ 40°C (104°F) non-condensing |
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CABLES AND ACCESSORIES |
power cord, ground cable, standard cable stud (1′ dia, 2 pcs), elbow adapter (female, 1/2′ dia, 1 pc), bushing adapter (male, 1/2′ dia, 1 pc) |
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ALTITUDE |
2,000 m (6,562 ft) to full safety specifications |
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OPTIONS |
Shipping case |
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WARRANTY |
One year on parts and labor |
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Specifications are valid at nominal voltage and ambient temperature of +25˚C (+77˚F). |
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