Endurance Series

DC UPS Solutions

Thyristor Battery Chargers – Uninterrupted Power, Unmatched Reliability

At Chhabi Electricals, we recognize that your operations demand unwavering power continuity. That’s why our DC UPS solutions are engineered to deliver reliability, precision, and intelligent control—ensuring your business never skips a beat. Whether you need rugged simplicity or smart, adaptive power management, we have the right solution tailored to your needs.

Endurance Series

Rugged & Reliable
When dependability is non-negotiable, the Endurance Series delivers decades of trouble-free performance in the harshest environments — from substations to remote industrial sites. Designed for simplicity and resilience, it’s the go-to choice for technicians who value hands-on control and robust operation

24–360 VDC

Up to 2500 A

6/12/24-pulse

Lead-acid • Ni-Cd • Li-ion*

*Li-ion support available on request.

Uninterrupted Power for Every Application

Endurance Series thyristor chargers provide dependable DC power with adjustable 24–360 VDC output up to 2500 A. They support 6, 12, or 24-pulse rectifiers and include robust protections against surges, heat, and dust. The design favors predictable manual control for long-life operation in rugged industrial environments

Industrial-Grade Durability

Analog-controlled thyristors built to withstand surges, heat, and dust.

Manual Precision Control

Potentiometer-based voltage/current tuning for predictable operation.

Universal Compatibility

Works with 6/12/24-pulse rectifiers, integrates with legacy and modern systems.

Wide Power Range

elecom backups up to 360 V heavy machinery, handling up to 2500 A

Technical Specifications

Instrumentation

Instrument	Details
Output	DC Voltmeter, DC Ammeter
Battery	DC Voltmeter, DC Ammeter
Input	AC Voltmeter, AC Ammeter (optional)

Protection Features

Feature	Description
Thyristor Protection	Dedicated fuse for thyristor safety
Soft Start	Prevents inrush currents during startup
Electronic Current Limit	Protects system from excessive load
Phase Protection	Phase sequence reversal & phase failure protection

Alarms & Indications

Category	Details
Alarms / Annunciations	LED Annunciations Window Annunciation Digital, Analog combined Annunciations (DAA – Chhabi make)
Status Indications	Relay Contacts: Potential free (optional)
Communication	RS485 (optional)

Mechanical

Specification	Details
Construction	Folded sheet MS, powder coated (Paint Shade – Customizable)
Sheet Thickness	Frame (Load bearing members) – 2 mm, Panels (Non-load bearing members) – 1.6 mm
Cable Entry	Bottom (top on request)
Panel Access	Front & rear; Only front on request
Terminal Arrangement	Back side
Enclosure Protection	IP20 / IP31 / IP42 (others i.e. IP5x on request)
Cooling	Natural air cooling / Forced air cooling
Noise Level	70 dBA (natural) / 80 dBA (forced cooling)
Installation	Indoor, floor mounting, self-standing

Operating Conditions

Condition	Details
Temperature	0°C to +50°C
Humidity	≤95% RH (non-condensing)
Altitude	≤1000m above MSL

Why Choose Chhabi for Your UPS Needs?

More than just power backup — we deliver engineering reliability, tailored solutions, and unmatched service that keeps your business running 24/7.

Expert Engineering – Designed for long life in harsh industrial conditions.
Custom Configurations – Voltage/current ratings to match site needs.
Ready Inventory & Service Team – Short lead times and responsive support.
Warranty & Lifecycle Support – Backed by ISO-certified quality systems

Real Impact, Proven Results

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Talk to an Engineer

Share voltage, current, duty cycle, battery type, and environment.

DC UPS Solutions

Thyristor Battery Chargers – Uninterrupted Power, Unmatched Reliability