Er Akash Electronic and Electrical

02/08/2026

Electrical panel installing

02/08/2026

Understanding the DYN11 Transformer Vector

Group

Today, I revised one of the most important concepts in electrical power systems-DYN11 Transformer Vector Group.

Key Points:

D = Delta connection on the High Voltage (HV) side

◆ Y = Star connection on the Low Voltage (LV) side

N = Neutral available on the LV side

11 = LV leads HV by 30° (clock notation)

Why is DYN11 widely used?

Neutral available for single-phase loads

Better performance with unbalanced loads

Helps suppress third-harmonic currents

Commonly used in 11 kV/433 V distribution transformers

01/08/2026

Contactor vs Relay - Know the Right Choice!

Many beginners get confused between a Contactor and a Relay. Both are electrically operated switches, but their applications are different.

Contactor - Used for high-power loads such as motors, heaters, and industrial equipment.

Relay - Used for low-power control, signaling, and automation circuits.

Understanding the difference helps in selecting the right component, improving system reliability, safety, and performance.

Save this infographic for quick revision and share it with fellow engineers and technicians!

01/08/2026

Electrical & Automation Learning

Understanding industrial control panels is an important skill for every electrical, instrumentation, and automation engineer. This infographic shows the major components used inside a control panel, including MCCB, MCB, RCD, contactors, SSR, PLC, terminal blocks, relays, VFDs, remote I/O modules, and more.

Knowing the function of each component helps in troubleshooting, panel design, commissioning, and maintenance. Save this post for future reference and share it with fellow engineers!



Panel

Engineering

31/07/2026

Electrical automation panel

31/07/2026

DELTA VFD (ME300) PARAMETER CONNECTION WIRING DIAGRAM.

30/07/2026

29/07/2026

Electrical panel wiring

27/07/2026

Electrical panel installing