[We keep wondering what the heck this sequence on the name plate of the Circuit Breakaer. Lets find it out now. What is the Duty Cycle/ Operating Sequence of CB? It is the Mechanical Duty requirement to be fulfilled by the Operating Mechanism of the Breaker and specified on the Name Plate of the Breaker…
[et_pb_section fb_built=”1″ _builder_version=”3.17.6″ background_color=”rgba(255,255,255,0.76)” custom_margin=”0px|||0px” custom_padding=”0|0|0|0|false|false”][et_pb_row custom_padding=”0|0px|20.1389px|0px|false|false” _builder_version=”3.19″][et_pb_column type=”4_4″ _builder_version=”3.19″ parallax=”off” parallax_method=”on”][et_pb_text _builder_version=”3.19.5″ text_font=”Lato||||||||” text_line_height=”1.3em” custom_padding=”20px|20px|20px|20px” inline_fonts=”Arial,Georgia,Times New Roman”] There are following Commissioning Tests, Diagnostic Tests and Trials of Circuit Breaker. [/et_pb_text][et_pb_text module_class=”custom-module” _builder_version=”3.19.9″ text_font=”Lato||||||||” text_line_height=”1.2em” header_font=”||||||||” box_shadow_style=”preset1″ custom_margin=”0px||” custom_padding=”20px|20px|20px|20px” inline_fonts=”Arial,Georgia,Times New Roman”] 1) Measurement of Insulation Resistance: Objective: To ensure that each pole of…
[et_pb_section fb_built=”1″ _builder_version=”3.17.6″ background_color=”rgba(255,255,255,0.76)” custom_margin=”0px|||0px” custom_padding=”0|0|0|0|false|false”][et_pb_row custom_padding=”0|0px|20.1389px|0px|false|false” _builder_version=”3.19″][et_pb_column type=”4_4″ _builder_version=”3.19″ parallax=”off” parallax_method=”on”][et_pb_text _builder_version=”3.19.4″ text_font=”Lato||||||||” text_line_height=”1.3em” custom_padding=”20px|20px|20px|20px” inline_fonts=”Arial,Georgia,Times New Roman”]There are two Tripping Circuits in the Breaker, Called a Trip Circuit 1 and Trip Circuit 2. Both this Tripping Circuits should have different DC Supply and different Tripping. Tripping Circuit of VCB can be divided into…
A very common problem in EHV Substations, Circuit Breaker not closing Electrically. The Troubleshooting steps are as under: Step 1: Basic Checks: Check the DC Supply to the Breaker. Connect the Multimeter between K1 and K2, it should show full voltage (220V/110VDC). Check, if the Closing Spring are charged, because an NC Spring Charge limit…
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