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Industrial Power Quality & Protection

Ultra-Isolation &
K-Factor Transformers

Complete galvanic protection engineered to isolate raw utility noise, neutralize ground-loop surges, and eliminate harmonic overheating in sensitive electronics. Continuous 24/7 mission-critical duty.

100% Galvanic Isolation
K-Factor: K1 to K20 Rated
120 dB Noise Attenuation
1 kVA to 1000 kVA+
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Superior Engineering Standards

Why Industrial Facilities Rely on Our Isolation Units

Engineered to deliver clean conditioned power and absolute galvanic isolation between raw utility grid lines and your sensitive equipment.

Total Galvanic Isolation

Physically disconnects primary and secondary electrical circuits, preventing destructive ground loop currents and grid transients from reaching loads.

120 dB Noise Attenuation

Features ultra-dense electrostatic copper shielding that attenuates common-mode and transverse-mode electrical noise up to 120 dB across wide frequency bands.

Harmonic & K-Rated Design

Tailored for nonlinear loads (servers, SMPS, VFDs). Available with K4, K13, and K20 ratings to prevent magnetic saturation and dangerous neutral conductor overheating.

True Clean Local Neutral

Creates a fresh, completely isolated neutral reference point right beside your load, eliminating neutral-to-ground floating voltage and microprocessor errors.

VPI Vacuum Impregnation

Coils are vacuum pressure impregnated with high-grade Class H resin, ensuring optimal thermal dissipation, moisture resistance, silent operation, and a 20+ year service life.

IS & IEC Compliant Housing

Housed in heavy-gauge CNC sheet steel enclosures with epoxy polyester powder coating (IP21 to IP55), built specifically for harsh industrial shop-floors.

Technical Parameters

Product Specifications Matrix

Standard and custom-engineered configurations built to your exact site requirements.

Parameter Industrial Standard Specification
Power Rating / Capacity 5 kVA to 1000 kVA (Custom ratings up to 2500 kVA on request) Customizable
Input Voltage Range 415V / 400V / 380V AC, 3 Phase, 3 Wire or 4 Wire
Output Voltage 415V / 380V / 200V / 110V AC, 3 Phase, 4 Wire
Operating Frequency 50 Hz / 60 Hz ± 5%
Winding Material Dual-coated electrolytic Grade Copper (Cu) or High Conductivity EC Grade Aluminum (Al)
Core Type & Lamination Low Loss Cold Rolled Grain Oriented (CRGO) M4 / M5 Grade Steel
Insulation Class & Temp Rise Class H (180°C) / Class F (155°C) with low thermal gradient
Common Mode Noise Rejection 100 dB to 120 dB Attenuation
Dielectric Strength (Hipot) 3.0 kV AC RMS for 60 seconds (Primary to Secondary & Earth)
Cooling Type & Enclosure Air Natural (AN) / Forced Air (AF), IP-21 Standard (IP-31 / IP-55 Available)
Standards Conformance IS 2026, IS 11171, IEC 60076, IEEE 519
Industry Use-Cases

Where Our Isolation Transformers Are Deployed

Ensuring uninterrupted productivity across mission-critical infrastructure across India.

Data Centers & Server Rooms
Prevents server reboots, protects SAN storage arrays, and absorbs harmonic distortion generated by high-density SMPS server racks.
Medical & Diagnostic Imaging
Eliminates artifacts and image distortion in MRI, CT Scanners, Cath Labs, and ICU ventilators by guaranteeing ground-neutral safety.
CNC Machinery & Robotics
Protects sensitive PLC controllers, servo drives, and encoders against line noise and back-EMF spikes caused by heavy industrial motors.
Telecom Towers & Satcom
Guards remote base stations from lightning-induced utility surges and provides clean voltage referencing for microwave transmitters.
Pharma & Chemical Process
Ensures 100% uptime for chromatography, spectrometers, and automated batching sensors where voltage jitter ruins quality testing.
Audio/Video & Broadcasting
Eliminates annoying 50Hz electrical hums, audio buzz, and video ground loops in recording studios and broadcast master control rooms.
Engineering Comparison

Standard Transformers vs. Northern EPES

Understand how custom electrostatic shielding and K-Factor winding prevent catastrophic downtime.

Feature / Parameter Conventional Auto / Step-Down Northern EPES Ultra-Isolation
Galvanic Isolation ❌ None (Shared neutral/earth linkage) ✅ 100% Isolated Dual Windings
Electrical Noise Shielding ❌ < 20 dB (Passing utility noise directly) ✅ Up to 120 dB Copper Inter-Shield
Harmonic Current Handling ❌ Overheats on VFD / Server load ✅ K-4 to K-20 Rated Non-Linear Core
Local Neutral Generation ❌ Depends on fluctuating utility grid ✅ Clean, Stable 0V Neutral-to-Ground
Lifespan & Impregnation ❌ Dip Varnish (Air bubbles & degradation) ✅ Vacuum Pressure Impregnated (VPI) Class H
Technical FAQs

Frequently Asked Questions

Common questions concerning isolation transformer deployment, capacity sizing, and harmonic ratings.

What is the difference between an Ultra-Isolation Transformer and a Standard Transformer?
A standard transformer transfers electrical power via magnetic induction but often permits common-mode electrical noise and transients to pass directly through inter-winding capacitance. An Ultra-Isolation Transformer features specially designed Faraday electrostatic copper shielding between primary and secondary windings, attenuating electrical noise by up to 120 dB and generating a clean, independent neutral.
Why is K-Factor rating essential for modern data centers and IT loads?
Non-linear electronic loads (like servers, SMPS, and Variable Frequency Drives) pull current in short pulses rather than smooth sine waves, producing severe triplen harmonics (3rd, 9th, 15th). These harmonics cause severe overheating in ordinary transformer neutral conductors and magnetic cores. A K-Factor rated transformer (K4, K13, K20) has oversized neutrals and double-transposed windings to easily withstand harmonic currents without insulation breakdown.
Can Northern EPES customize input and output voltages for imported machinery?
Yes, absolutely. We frequently engineer custom isolation transformers for imported European (400V 50Hz), American (480V/208V 60Hz), and Japanese (200V) industrial machines, stepping voltages up or down while providing 100% galvanic and harmonic isolation.
What is the lead time and warranty provided by Northern EPES?
Standard rating units (up to 100 kVA) are typically ready for dispatch within 5–7 business days, while higher capacity or customized designs take 10–14 days. Every Northern EPES transformer is backed by a comprehensive 1 to 3-year warranty with pan-India on-site commissioning support.
Direct Manufacturing & Engineering

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