₹16,747.00
Input: 230 V AC
Output: 230 V AC
The Purevolt 4 KVA isolation transformer is a single-phase unit designed to supply electrically isolated power to sensitive equipment and multi-device installations. Its nominal configuration uses 230 V AC input and 230 V AC output, making it suitable for applications that need a 1:1 transformer ratio while maintaining separation between the primary mains circuit and the secondary load circuit.
With separate primary and secondary windings, the transformer transfers energy through magnetic induction rather than a direct electrical connection. This galvanic isolation can improve supply separation and help control common-mode interference in properly engineered industrial, laboratory, medical-support, IT, communication, and commercial systems.
Recommended Uses for a 4 KVA Isolation Transformer
The 4 KVA capacity is useful where a 3 KVA model provides insufficient load margin but a 5 KVA model is not necessary. It can support a single equipment system or a group of devices, provided their combined apparent power and inrush remain within the selected rating.
Common applications include:
- Industrial automation and machine-control panels
- Laboratory instruments and research equipment
- Diagnostic and analytical electronics
- Multiple computer workstations and peripherals
- IT, server and communication installations
- Broadcasting, studio and audio-video systems
- Printing and packaging-machine controls
- Testing, calibration and repair facilities
- Security and surveillance systems
- Office electronics and commercial equipment
- Small process-control installations
- Sensitive instrumentation in manufacturing plants
Application suitability must be verified from load current, VA, power factor, startup characteristics, operating hours, ambient temperature, and future expansion.
Product Configuration
- Capacity: 4 KVA
- Phase: Single phase
- Nominal input: 230 V AC
- Nominal output: 230 V AC
- Transformer ratio: 1:1 nominal
- Primary purpose: Electrical isolation
- Cooling: Air cooled
- Format: Enclosed transformer assembly
Optional requirements may include an electrostatic shield, non-standard input or output, additional terminals, input-output breakers, meters, castors, a customized enclosure, or application-specific insulation. Confirm these details before ordering because they may not be included in the standard listed model.
How Galvanic Isolation Supports Equipment
Electrical and electronic systems can experience interference through shared mains connections, grounding paths, switching devices, motors, drives, and other loads. A transformer with separate windings breaks the direct conductive path and establishes an isolated secondary. This can reduce the transfer of certain common-mode disturbances and provide a cleaner reference for selected equipment.
The level of noise reduction depends on transformer construction, shielding, frequency, wiring, earthing and the source of interference. Differential-mode noise, harmonics, voltage fluctuation, and high-energy transients may require additional equipment. A technical assessment is recommended where power-quality problems are severe or unexplained.
What the Transformer Does Not Do
A 4 KVA isolation transformer should not be confused with a servo voltage stabilizer. A 1:1 isolation transformer does not actively maintain a fixed output when the input voltage changes. It also does not provide battery backup.
Where required, it may be combined with a stabilizer, online UPS, surge-protection device, EMI filter, circuit breaker, or residual-current protection. Correct earthing and protective coordination remain essential even when the load is isolated.
Capacity and Load Planning
At a nominal 230 V, 4 KVA equals approximately 17.4 A at unity power factor. This calculation is only a reference. Actual load selection must consider efficiency, power factor, harmonics, duty cycle, temperature, ventilation, and inrush current.
Determine which devices run simultaneously and add their VA demand. For loads stated only in watts, obtain power factor or input-current data where possible. Allow headroom for startup and future expansion. Continuous operation close to maximum rating is generally less desirable than selecting a capacity with a suitable engineering margin.
Installation and Commissioning
Install the transformer in a dry, ventilated indoor area on a stable surface. Keep sufficient clearance around the enclosure and do not block air passages. Select cables, terminals, breakers, isolators, and earth conductors according to current and applicable electrical requirements.
The unit should be protected from direct rain, water ingress, corrosive fumes, conductive dust, vibration, and excessive ambient heat. Commissioning should include checks of input-output voltage, insulation, terminal tightness, load current, earth continuity, voltage drop, noise, and temperature rise. The secondary earthing arrangement must be deliberately designed rather than assumed.
4 KVA Isolation Transformer Price
The price of a 4 KVA single-phase isolation transformer varies with winding specification, insulation, shielding, enclosure, protection, metering, taxes, freight, and customization. The displayed online price applies to the listed standard model.
Provide Purevolt with the load schedule, equipment details, operating current, voltage, environment, and optional features to verify the rating and supply a suitable 4 KVA isolation transformer.
