TPR — Test Point Reset
Sales and Ordering Information
Please contact Customer Service at
SEL Lake Zurich, Illinois at +1.847.362.8304
or by email at CSR@eosmfg.com
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Test Point Reset (TPR) fault indicators are designed to aid in fault location on underground distribution systems that use terminators having test points. TPRs are easily installed on 200 A or 600 A separable connectors with test points. TPRs are line-powered using the potential present on the test point of elbow terminators (no load current is required).
TPR circuitry is epoxy-encapsulated and housed within an EPDM rubber boot, and the display target is hermetically sealed within a polycarbonate housing. This rugged construction makes TPRs suitable for application in harsh underground environments. They are available in single- or three-phase versions with integral or remote displays. TPRs automatically reset upon restoration of system voltage and are a quick, economical way to apply fault indication to underground systems.
The most economical solution for underground applications.
Easy to install on most brands of 200 A or 600 A class elbows with capacitive test points.
Automatic reset upon restoration of system voltage.
Ideal for pad-mounted transformer and switchgear applications.
Several remote display options eliminate the need to open an enclosure cabinet to determine the indicator’s status.
Available in single- and three-phase models.
Simply remove the fault indicator to access the test point.
Auxiliary contact option for SCADA compatibility.
Junction shield option prevents false tripping due to adjacent phase effects. Please consult SEL.
| Power Source |
Capacitive test point voltage |
| Nominal Trip |
Ratings 60 to 1200 A |
| Trip Tolerance |
±10% |
| Reset Voltage |
(L-N) ≥5 kV |
| Reset |
Automatic at minimum voltage |
| Reset Time |
3 minutes typical, dependent on system voltage |
| Maximum Fault Current |
25 kA for 10 cycles at 60 Hz |
| Trip Response Time |
1 ms |
| Inrush Restraint Response Time |
300 ms (add “IR” option) |
| Elbow Style |
200 A or 600 A class with test point |
| Housing Material |
Conductive EPDM rubber |
| Temperature Range |
—40° to +85°C |
 Tamperproof Bolt Display
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 BEACON Bolt® Display
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 Standard "V" Display
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 Three-Phase "3" Display
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 Large "L" Display
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 RadioRANGER® Remote Fault Reader Display
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Installation Instructions