[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=”3.19.5″ text_font=”Lato||||||||” text_line_height=”1.3em” custom_padding=”20px|20px|20px|20px” inline_fonts=”Arial,Georgia,Times New Roman”] Circuit Breakers is Protective Device used in Power System to make or Break the Circuit. [/et_pb_text][et_pb_text _builder_version=”3.19.3″ text_font=”Lato||||||||” text_line_height=”1.3em” box_shadow_style=”preset1″ custom_padding=”20px|20px|20px|20px” inline_fonts=”Arial,Georgia,Times New Roman”] Definition: CB is an Onload Switching Device, which can operate Manually for…
[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…
[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 elements in the Closing Circuit: Closing Coil TNC Switch Closing Resistance NC Aux Contact 52b Antipumping Relay Local Remote Switch [/et_pb_text][et_pb_text _builder_version=”3.19.3″ text_font=”Lato||||||||” text_line_height=”1.3em” box_shadow_style=”preset1″ custom_padding=”20px|20px|20px|20px” inline_fonts=”Arial,Georgia,Times New Roman”] Closing Coil: A permanat…
[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=”3.19.3″ text_font=”Lato||||||||” text_line_height=”1.3em” custom_padding=”20px|20px|20px|20px” inline_fonts=”Arial,Georgia,Times New Roman”] Control Circuit can be divided into following Circuits: DC Supply to the Breaker Closing Circuit Tripping Circuit Indication Circuit Spring Charge Motor Control Circuit. [/et_pb_text][et_pb_text _builder_version=”3.19.3″ text_font=”Lato||||||||” text_line_height=”1.3em” box_shadow_style=”preset1″ custom_padding=”20px|20px|20px|20px” inline_fonts=”Arial,Georgia,Times New Roman”] DC Supply to…
A Breaker can fail due to Electrical Problems such as Trip Circuit Faulty, Mechanical Problems such as, Breaker Pole getting stuck up while opening. Now, if the Relay fails, we have a Backup Protection, Similarly, if the Breaker Fails , there should be some Backup Protection. If there is no Backup Protection for the Breaker…
Main/Power Contacts: The main contacts of a breaker are used to Interrupt the flow of the current & Hence the power rating of these contacts will be high. The Main Contacts have a Fixed part & a Moving Part and there is an Arc Extingushing Medium between the two parts which extinguishes the arc, during…
[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=”30px|0|36px|0|false|false” _builder_version=”3.17.6″ module_alignment=”center”][et_pb_column type=”4_4″ _builder_version=”3.0.47″ parallax=”off” parallax_method=”on”][et_pb_accordion _builder_version=”3.19″ box_shadow_style=”preset1″ text_orientation=”left” max_width=”99%” custom_margin=”-30px||28px|5px”][et_pb_accordion_item title=”1.principle of operation:” open=”on” _builder_version=”3.7″ title_text_shadow_horizontal_length=”0em” title_text_shadow_vertical_length=”0em” title_text_shadow_blur_strength=”0em” body_text_shadow_horizontal_length=”0em” body_text_shadow_vertical_length=”0em” body_text_shadow_blur_strength=”0em”][/et_pb_accordion_item][/et_pb_accordion][et_pb_image src=”https://electricalfundaz.com/wp-content/uploads/CircuitBreaker/TCS/2-Principle.jpg” _builder_version=”3.17.6″ box_shadow_style=”preset1″ box_shadow_spread=”5px” max_width=”103%” custom_margin=”-27px|8px||7px”][/et_pb_image][et_pb_accordion _builder_version=”3.17.6″ box_shadow_style=”preset1″ max_width=”99%” custom_margin=”-30px|||5px”][et_pb_accordion_item open=”on” _builder_version=”3.7″ title_text_shadow_horizontal_length=”0em” title_text_shadow_vertical_length=”0em” title_text_shadow_blur_strength=”0em” body_text_shadow_horizontal_length=”0em” body_text_shadow_vertical_length=”0em” body_text_shadow_blur_strength=”0em”] Principle: A Continous Negative Voltage is given to one…
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