NV SubPower Private Limited

14/09/2026

May every obstacle in your path turn into an opportunity, and every new beginning bring success. - Happy Ganesh Chaturthi

03/09/2026

EHV transformers don’t fail without warning.
The warning is dissolved in the oil.

NVSDGM is NV SubPower’s for extra-high-voltage transformers — (PAS), up to 9 gases + moisture, no carrier gas on site.

Why PAS on an EHV tank:
• Acoustic signal from absorbed light — simple path, fewer consumables
• Acetylene from 0.1 ppm, cycle from 1 hour
• SS304/316 enclosure, Modbus TCP / IEC 61850 / DNP3
• Accuracy typically ±5% or LDL, repeatability ±3%
The software is the other half of the system:
• Live multi-gas trends with Normal / Abnormal / Warning
• Duval Triangle — CH₄ / C₂H₄ / C₂H₂ plotted into PD, T1–T3, D1/D2
• Rogers Ratio (IEEE C57.104) — four ratios coded automatically (0-0-0-0 = normal aging)
• History, CSV export, remote change of cycle and diagnostic limits
Offline lab DGA still has a place. It cannot watch the hours between samples. Online DGA can.
Short walkthrough of the analyser and the diagnostic screens is in the video.
NV SubPower Private Limited | Vadodara
Stay ahead in monitoring · nvsubpower.com


www.nvsupower.com

https://youtu.be/wjAmknHMZcY?si=SFbe93HYNd42_xEK

-Online Dissolved Gas Analyser for - real...

28/08/2026

Meet NV SubPower at ELECRAMA 2027 — Stall H4-C10, India Expo Mart, Greater Noida, 20–24 Feb. Online transformer & electrical asset condition monitoring.

www.nvsubpower.com
[email protected]
NV Subpower private limited
406, 206-07 , V3 Landmark, Sun Pharma Road
Atladara - Vadodara 390012, India
LL : +91 265 3186013 ; NV SubPower Private Limited | [email protected]

15/08/2026

Freedom is a gift—let's cherish it today and always
Happy Independence Day !

05/04/2026

Precision meets reliability in transformer diagnostics.

Tested with NABL accrediated lab In India,

The NVSDGM from NV SubPower uses Photoacoustic Spectrograph (PAS) and semiconductor sensors for accurate online measurement of total 9 gases which includes 7 key gases + moisture – with local LCD display, trend analysis, and built-in fault diagnostics.

Ideal for 3-phase transformers with its compact 3-in-1 design and contamination-free sampling.

Early detection = longer transformer life and higher grid reliability.

* video represents different types of transformer oil testing stages before dispatch i.e some impurities added into oil samples like moisture

https://youtu.be/VAvXj6D20QE?si=1gTKNPpQpXKh8wWD

What are your biggest challenges in transformer condition monitoring? Share in the comments.

Connect us at
[email protected]
[email protected]
+91 265 3186013
www.nvsubpower.com

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