STM-XXG Multi-Electrode DC Spark Testers
The STM-10/20GF is the Clinton Instrument Company's Multi-Electrode DC spark tester, used for testing individual conductors during bunching and cabling operations. It can connect up to seven test modules with individual fault outputs for each channel. The STM-GF is available in 10kV and 20kV models.
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Individual testing of multiple conductors
Up to 7 test modules per control unit
Unique fault output for each channel
Test Voltage Range
STM-10GF - 1000v-10kV DC
STM-20GF - 1000v-20kV DC
3-1/2 digit LED 14.5mm display
Accuracy 2% of reading +/- 1 digit
Control Unit - Each channel has an amber indicating lamp and onto-isolated latching output. The control unit has a common 3-digit electro-mechanical counter for a total fault count.
HV Test Module - Amber indication light mounted on chassis.
Less than 1 millisecond
Continuous high voltage / Remove voltage on fault
Momentary relay closure on fault / latched relay closure on fault until reset
Less than 600uA at 5kV
Power supply is self-adjusting
Form “C” relay contacts rated 2 amps maximum for both NO and NC circuits.
Front panel or external reset. In non-latch modes closure time is adjustable from 12.5 milliseconds to 2.5 seconds.
Product Diameter (ro wire/cable)
1-inch wide electrode - Up to 0.75-inches
2-inch wide electrode - Up to 1.75-inches
Bead chain, brush
Bead Chain Electrode Lengths
Compliant line speed with a 2-inch electrode
Up to 8000 feet per minute
Maximum compliant UL line speed with a 4-inch electrode