Ashain Engineering Services

27/04/2026

This small yet effective fire suppression device automatically controls fire at an early stage, minimizing the risk of major damage and loss.”

27/04/2026

What is the Difference between Earthing and Grounding?
Earthing:
Earthing can simply be defined as the process of protecting against unwarranted spikes and bouts of electricity that can cause damage to life and property. Therefore it is important to remember these key differences between the two. One needs to understand that they both are referring to the same process.
Grounding:
Grounding is similar to Earthing, which achieves insulation against accidental currents. The main live wire is connected to a power supply to power an appliance. However, the other portion of the wire is led under the earth. This is done in case of an accidental cut in the circuit to avoid overloading and other dangerous side effects.

The key difference between earthing and grounding is that the term “Earthing” means that the circuit is physically connected to the ground, which is Zero Volt Potential to the Ground (Earth). Whereas in “Grounding”, the circuit is not physically connected to the ground, but its potential is zero with respect to other points.

22/02/2026

How to measure Hi voltage and current.
And how CT(current Transformer) works.

30/12/2025

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https://t.me/Taiz_TelecomDevelopement/4009
https://whatsapp.com/channel/0029VaQBdgG2UPB9quixy602
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(Voltage Standing Wave Ratio) is a key measurement in telecom systems that shows how efficiently RF power is transmitted from the RRU to the antenna.
It tells you how much power goes forward, and how much is reflected back due to mismatches in the RF path.

does VSWR matter?
When VSWR is high, it means part of the RF energy did not reach the antenna, and instead reflected back into the RRU.

This causes:
❌ Power loss
❌ Reduced coverage
❌ Poor signal quality
❌ Higher noise and interference
❌ Potential damage to the RRU power amplifier (PA)
This is why RRUs have VSWR alarms (Minor/Major/Critical).

causes high VSWR?
Common reasons include:
• Loose or damaged feeder cables
• Water inside connectors
• Broken jumpers
• Faulty antenna ports
• Corrosion at connectors
• Wrong frequency or mismatched components
• Poor installation / bent cables

is considered a good VSWR?
In most LTE/NR macro networks:
• 1.0 – 1.3 → Excellent
• 1.3 – 1.5 → Acceptable
• 1.5 – 2.0 → Warning / marginal
• > 2.0 → Bad, likely to trigger alarms
• > 3.0 → Critical, severe mismatch

engineers care about VSWR?
Because high VSWR = poor network performance:
• Less coverage area
• Lower throughput
• Call drops
• Higher noise floor
• Higher PA temperature / risk of failure

19/07/2025

How to check DG power.?

19/07/2025

How slica gel is important in Transformer?

19/05/2025

Guess the location 🤣

15/04/2025

This is how to check earth leakage circuit breaker.
1. Connect the power
2. Output phase touch with little wet surface of earth.

05/04/2025

50Kva Transformer making

02/03/2023

17/01/2023

Electrical Engineer???