About ESI
Electro Service India began with LT transformers and chokes in 1987. Today we supply battery chargers, SMPS, control panels, and AC/DC distribution to steel plants, electricity boards, PSUs, and quality-driven SMEs nationwide.
ESI started its operation with manufacturing of LT Transformers and Chokes for industrial applications in 1987. Within a very short period ESI has earned the unflinching patronage of discerning users which include Giant Steel Plants, Electricity Boards, Large Public Sectors, Multinationals, National Laboratories and a number of quality conscious Medium & Small Industries.
ISO 9001:2015 processes from design to field support.
Thyristor & SMPS platforms tuned for utilities and industry.
Maintenance, buy-back, and replacement programmes.
PCB Assembly Line
Transformer Test Bench
Dual 3 Phase FCBC
Company snapshot
Electro Service India is a Kolkata-based partnership firm with two manufacturing units, ISO-certified processes, and pan-India install & support.
ISO 9001:2015
Quality management from design to field support
Since 1987
35+ years in power electronics & transformers
Partnership firm
Two manufacturing units in Kolkata
MSME registered
UDYAM-WB-10-0005169
Manufacturing units
Works & registered office
Works
Registrations
Product range
From float-cum-boost to SMPS and Li-Ion — built for harsh industrial environments.
Battery Charger, when used in stand by application is not a standalone dedicated Battery Charger. In standby application a Battery charger along with a floating Battery provide uninterrupted DC power supply to a critical DC load. This is Float-cum-boost battery charger or FCBC feeds the critical load without any break and also charges the discharged battery.
Details
Battery chargers dedicated for charging Traction batteries are commonly known as “Traction Battery Chargers”. Traction batteries are used for material handling vehicles inside a plant, passenger carrying carts in airport or railway stations, Golf cart and similar applications.
Details
SMPS Battery Charger • A typical Switched Mode Power Supply incorporates a frontend AC-DC rectifier to generate an unregulated DC input voltage. • High power & high frequency MOSFETs/IGBTs then switches ON/OFF the unregulated input DC Voltage at a very high frequency (say 80Khz) at the primary of a ferrite transformer. • This high frequency ferrite transformer isolates, steps down and converts this square wave DC to square wave AC output. • It is then rectified & filtered to generate a smooth ripple free output DC voltage. • Pulse Width Modulation technique is generally employed to regulate the SMPS output.
Details
Electro Service India (ESI) is the most trusted manufacturer of high-end Toto Battery Chargers, specifically developed f…
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## AC DISTRIBUTION BOARD Low tension AC Distribution Panels/Boards have many applications such as: 1. Power Distributi…
DetailsOur clientele
ATOMIC ENERGY COMMISSION
![BHEL [ TRICHY, BHOPAL,RANIPET ]](https://content.esielectro.com/uploads/client_logo12_99d298cdcf_47b156b9df.png){kind=logo}
BHEL [ TRICHY, BHOPAL,RANIPET ]
KMDA
AIMS
CESC
PHED -WB
HUTTI GOLD MINES ( Govt of India)
EAST COAST RAILWAYS
NDIAN OIL CORPORATION
HINDALCO
BHUTAN POWER
NEPAL ELECTRICITY
AEGCL , ASSAM
IIT KHARAGPUR
MANIPUR POWER
NAGALAND POWER
TRIPURA POWER
SAIL
BOKARO POWER
NATIONAL LIBRARY
KALYANI UNIVERSITY
KMC
INDIAN NAVY
Trusted by industry
We take great pride in delivering quality products and services to our clients. Here are some testimonials from our valued customers:
M/s Electro Service India’s performance of the Battery Chargers are very satisfactory and their service and maintenance support is excellent.
Share your application — substation, traction, e-mobility, or custom panel build. We’ll respond with technical options and timelines.
