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IST
(In-Situ Tester)
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The Dairyland model Isolator/Surge Protector (ISP) can be field
tested with standard equipment, such as a multimeter and clamp-on
ammeter. However, when more comprehensive testing is required
by a user, the automated In-Situ Tester can be purchased or
rented from DEI. The In-Situ Tester answers a number of questions
for the user, namely, whether:
- The ISP is working properly
- The ISP is being applied within its steady-state ratings
- The ISP will transition from one mode to the other and automatically
reset when subject to a fault/transient event
It has the capability to perform testing while the ISP is in
service, measuring such parameters as:
- AC and DC Voltage Across the ISP
- AC Induced Current Through the ISP
- DC Leakage Current Through the ISP
- Threshold Voltage
Additionally, the In-Situ Tester will check all major components
in the ISP for tolerance and operation. All tests run automatically.
Information is stored internally, for printing or data export
at a later time. Use of the In-Situ Tester requires ordering
the Isolator/Surge Protector with the Test Point option.
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