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2026-5-05Detailed Basics of High Voltage Switchgear II
( I ) Three Positions of Switchgear Trolley Working Position In this position, the circuit breaker is fully connected to the primary system. When closed, it conducts power to the outgoing lines under -
2026-4-29Detailed Basics of High Voltage Switchgear
High-voltage switchgears are familiar to most electrical professionals. High-voltage switchgears are mainly applied to power grids with a voltage above 1 kilovolt.It guarantees stable circuit operatio -
2026-4-28Differences and Significance of Terminal-to-Case Withstand Voltage: 3/8kV vs....
✅ 3/8kV is the “passing line” for ordinary indoor capacitors. ✅ 6/15kV is the “safety ceiling” for power grid / airport‑grade capacitors. ✅ 6/15kV represents doubled insulation strength, doubled saf -
2026-4-28Three Fundamental Parameters-Resistance, Inductance and Capacitance
Resistors (R), inductors (L) and capacitors (C) are the three primary components and core parameters in all circuits. No electric circuit can operate without at least one of them.It is worth noting th -
2026-4-21CT（Current Transformer）versus PT（Potential Transformer）
Although both current transformers (CT) and voltage transformers (PT/VT) are classified as transformers, their functions and application scenarios differ significantly. In this issue, we will start wi -
2026-4-21Why choose Jinneng Cylindrical Power Capacitor?
1. Product: BKMJ 440V / 525V cylindrical power capacitor 2. Standard: IEC 60831-1&2:2014 3. Testing Institution: Suzhou Electrical Science Research Institute + TÜV Rheinland certification 4. Report -
2026-4-21What does obtaining the IEC certificate issued by TUV Rheinland signify?
✅1.25x rated voltage for 750h*2=1500hours ✅Passed 6/15kV insulation level testing ✅Ultra-Low Loss & Temperature Rise ✅Terminal voltage drops below 50V within 1 minute(Optional:or 75V 1 minutes) ✅D -
2026-4-21Interrelationship between power factor and reactive power compensation
Have you ever run into this puzzling problem? You installed additional compensation capacitors to improve power quality - yet your electricity costs went up, not down.What is the hidden technical caus -
2026-4-16Differences Between Switchgear Cabinet and Distribution Cabinet
The core difference between switchgear cabinets and distribution cabinets lies in their functional positioning and voltage levels .Switchgear cabinets serve as hubs for control and protection , focusi -
2026-4-15Working Principle of Power Factor Controller
Power factor controller, also known as reactive power compensation controller , is the core component of the reactive power compensation cabinet. It not only controls the entire reactive power compens -
2026-4-14Causes, Characteristics and Limiting Methods of Capacitor Switching Inrush Cu...
I. Causes of Capacitor Switching Inrush Current The core cause of capacitor switching inrush current is that a capacitor is an energy storage component, and the voltage across its terminals cannot cha -
2026-4-13The difference between passive filter and active power filter
Passive filters, also known as LC filters, are filtering devices composed of inductors (L), capacitors (C), and resistors (R), which can specifically eliminate single or multiple orders of harmonics.