Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

What is Silica Gel Breather of Transformer?Silica Gel Breather DefinitionA silica gel breather is a device used to filter moisture from the air entering a transformer, protecting its insulation.Air Flow MechanismTransformer oil expansion and contraction cause air to move in and out of the conservator tank, necessitating filtration.Construction of Silica Gel BreatherThe silica gel breather for transformers is simple in design. It is a container filled with silica gel that air passes through. Sili

What are the Types of Transformers Windings?Types of Transformers Core type transformers have windings on outer limbs Shell type transformers have windings on inner limbsMainly there are two types of transformer Core type transformer Shell type transformerTypes of Winding used for Core Type TransformerCylindrical WindingsThese windings are layered type and uses a rectangular or round conductor shown in Fig.(a) and (b). The conductors are wound on flat sides shown in Fig.(c) and wound on the rib

CooperationSafety requires the cooperation of all workers involved.AwarenessWorkers must be aware of all safety rules and regulations.Voltage DangerTreat all voltage levels as dangerous, even if they don’t cause shock.Dead CircuitEnsure the circuit is off before starting any work.Personal Protective EquipmentUse appropriate safety gear to protect yourself.

Safety Rules for Overhead Lines DefinitionSafety rules for overhead lines include guidelines to prevent accidents around live electrical conductors.Avoid Climbing and TyingNo climbing towers with live conductors and no tying animals to tower parts.Handling Snapped ConductorsProper shutdown and earthing are essential before touching snapped conductors.Maintain Safe ClearancesFollow safety clearances for overhead lines to avoid hazards.Report IssuesReport any sparking or other issues with live ove

What is Dielectric Grease?Dielectric Grease DefinitionDielectric grease is a silicone-based grease used to protect electrical components from dirt, moisture, and corrosion.Non-Conductive PropertyDielectric grease is an insulator, which means it prevents the flow of electrical current.Usage PrecautionEnsure dielectric grease does not contact conductive paths to avoid disrupting electrical connections.Comparison with VaselineVaseline is weaker and less durable than dielectric grease, especially in

What is a Cut Sheet ?Cut Sheet DefinitionA cut sheet (or spec sheet) is defined as a document that details the specifications and features of a piece of equipment.PurposeCut sheets are used in the electrical industry to provide necessary details for equipment installation and approval.Specifications IncludedThey include key specifications such as sizes, ratings, capacities, and part lists.Comparison ToolCut sheets help in comparing different equipment models by listing alternate model numbers an

What is 1900 Electrical Box ?1900 Electrical Box DefinitionA 1900 Electrical Box is defined as a standard 4-inch square electrical switch box, used when a simple switch box is insufficient.Types and Capacity 1900 Electrical Box 1900 Deep Electrical BoxDesign and DimensionsThese boxes have a patented design for easy cable removal and reuse. The regular box is 4×4 inches and 1.5 inches deep, while the deep box is 4×4 inches and 2.125 inches deep.Historical BackgroundThe name “1900 Box” comes from

What is CSST Bonding ?CSST Bonding DefinitionCSST (Corrugated Stainless-Steel Tubing) bonding is defined as connecting a conductor to the CSST gas pipe and grounding system to ensure safetyNecessity of CSST BondingProper bonding reduces the risk of fires or explosions caused by lightning strikes or power surges.Proper Bonding TechniqueA bonding wire should connect to the rigid gas piping or directly to the CSST fitting, ensuring a secure and continuous path to the ground.Code ComplianceCSST bond

What is a Dead Short ?Dead Short DefinitionA dead short is when electrical current flows where it shouldn’t, with no resistance, often causing damage or hazard.Comparison with Short CircuitUnlike a short circuit, which has some resistance and reduced voltage, a dead short shows zero voltage and resistance, indicating a more severe problem.Give an exampleBolted Fault SimilarityA bolted fault, like a dead short, also exhibits zero resistance, but it specifically involves connections to ground.Grou

What is Clamping Voltage?Clamping Voltage DefinitionClamping voltage is defined as the maximum voltage allowed to pass through a surge protector before it limits further voltage, protecting connected devices from surges.Purpose and OperationSurge protectors use clamping voltage to suppress excess voltage, ensuring devices remain safe from power surges.Breakdown VoltageBreakdown voltage is defined as the minimum voltage at which an insulator starts to conduct electricity, allowing current to flow