SE-105 & SE-107 TESTS Technical Note

PublishTime：2022-05-24

●The following tests are for a resistance-grounded system utilizing an SE-TA6 termination device. Set the GF switch to the correct trip level and the MODE switch to UV.
■5.6-V Zener-Diode Test
▲The zener diode is tested as a stand-alone unit. Most multimeters have a quick diode-test function. In the forward-biased direction, the diode-test should read ~0.6 V. In the reverse-biased direction, the diode-test should read OPEN.
■Ground-Check Trip Test
▲Connect the SE-105/SE-107 and termination device as shownin Figure 1 The ground-check LED should be on. Open-circuit the termination device, the ground-check LED should be off. Connect the termination device; the ground-check LED should be on. Short the termination device; the ground-check LED should be off.
■Ground-Fault Trip Test
▲The GF trip level on the SE-105/SE-107 refers to the current through the primary of the CT200 or CT200L. The SE-105/SE-107 ground-fault trip level is calibrated for use with the CT200 or CT200L and compensates for CT non-linearity.

Brand of Product：	Littelfuse
Part#：	SE-105 、 SE-107 More Part#
Product Category：	GROUND-FAULT RELAY TEST UNIT More
Application：	More
Data Type：	Application note & Design Guide More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	112118
Version Number：	Rev: 112118
Data Encoding：	TN- GC04
Data Size：	281 KB

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