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630 KVA OLTC Distribution Transformer

Name: 630 KVA OLTC Distribution Transformer
Brand: NGG POWER TECH INDIA PRIVATE LIMITED
Price: 1093700.00 INR
Availability: InStock

Price 1093700.00 INR/ Unit

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MOQ : 1 Unit

630 KVA OLTC Distribution Transformer Specification

Dimension (L*W*H)
2100 mm x 1360 mm x 1670 mm

Load Loss
4560 W

Coil Material
Electrolytic Copper

Operating Temperature
-20°C to +50°C

Cooling Type
ONAN (Oil Natural Air Natural)

High Voltage
11 kV

Voltage Booster Type
OLTC (On Load Tap Changer)

Capacity
630 kVA

Low Voltage
433 V

Rated Voltage
11 kV/433 V

Product Type
OLTC Distribution Transformer

Material
Copper/CRGO Silicon Steel

Output
630 kVA

Frequency (MHz)
50 Hz

Efficiency
98.5%

Phase
Three Phase

Usage
Power Distribution

Coil Structure
Toroidal

Coil Number
Double Winding

Power Scope
630 kVA

Weight
Approx. 2200 kg

Protection
Buchholz Relay, Pressure Relief Device, Silica Gel Breather

Bushings
Porcelain Type, Outdoor Use

Mounting Type
Pole/Plinth Mounted

Oil Quantity
Approx. 650 Liters (Transformer Oil)

Maximum Temperature Rise (Winding Oil)
45C / 40C

No-Load Loss
950 W

Tap Range
+5% to -15% in steps of 1.25%

Vector Group
Dyn11

Insulation Class
A

Standards
IS 1180 / IEC 60076

Impedance Voltage
4.75% (at rated current)

Duty Cycle
Continuous

630 KVA OLTC Distribution Transformer Trade Information

Minimum Order Quantity
1 Unit

Supply Ability
500 Units Per Month

Delivery Time
30 Days

Main Domestic Market
All India

About 630 KVA OLTC Distribution Transformer

By keeping track with market development, we manufacture and supply high quality 630 KVA OLTC Distribution Transformer. Offered transformers are precisely manufactured by our skilled technocrats by utilizing premium quality components that are procured from the trusted sources of the market. These transformers are designed to provide power to the machines at required voltages. Use of latest quality components which helps in excessive of voltage changes and over load protection, which are suitable for commercial and heavy industrial applications. Further, these 630 KVA OLTC Distribution Transformers are available with us in various standards and custom made designs according to the different requirements of clients.

Product Details

Voltage Ratio	11kV/433V
Brand	NGG Power Tech
Phase	3-Phase
Winding Material	Copper
Power Rating	630kVA
Standards	IS-1180

Optimized Voltage Regulation with OLTC

This transformer employs an On Load Tap Changer (OLTC), allowing for seamless voltage adjustment (+5% to -15%) without interrupting the power supply. The OLTC empowers utility providers to stabilize output voltage in real-time, ensuring consistent delivery during fluctuating demand or supply conditions.

Rugged, Weatherproof Design for Outdoor Use

Built to thrive outdoors, the transformer features a weather-resistant enclosure, robust porcelain bushings, and extensive oil cooling (ONAN), making it suitable for both pole and plinth mounting. Its corrosion-resistant components and capacity for wide ambient temperatures ensure long-term reliability in varying Indian climates.

Advanced Protective Features for Safety

Safety mechanisms like the Buchholz relay, pressure relief device, and silica gel breather work in tandem to detect internal faults, relieve excess pressure, and prevent moisture ingress. These comprehensive protections prolong transformer life and enhance site safety during operations.

FAQs of 630 KVA OLTC Distribution Transformer:

Q: How does the On Load Tap Changer (OLTC) benefit power distribution?

A: The OLTC enables real-time voltage adjustment across a tap range of +5% to -15% in 1.25% steps, allowing operators to maintain a stable voltage output without shutting down the transformer. This results in minimized voltage fluctuations and improved power quality for end-users.

Q: What protection mechanisms are integrated into the 630 KVA transformer?

A: The transformer includes a Buchholz relay for early fault detection, a pressure relief device to safeguard against overpressure, and a silica gel breather to absorb moisture, collectively enhancing operational safety and equipment longevity.

Q: When should the transformer oil be checked or replaced?

A: Transformer oil should be checked at regular intervals, typically every six months, for dielectric strength, acidity, and moisture content. Replacement or purification is recommended if the oil shows signs of deterioration or contamination.

Q: Where can this transformer be installed?

A: The transformer is designed for versatile installation, either pole-mounted or on a plinth, making it suitable for outdoor environments such as residential areas, commercial zones, and industrial sites across Indian regions.

Q: What standards does the 630 KVA OLTC Distribution Transformer comply with?

A: This transformer complies with IS 1180 and IEC 60076 standards, ensuring adherence to stringent quality, performance, and safety requirements for reliable power distribution applications.

Q: How is cooling achieved in this transformer model?

A: Cooling is provided by the ONAN (Oil Natural Air Natural) system, which uses transformer oil and ambient air circulation to dissipate heat, maintaining safe operational temperatures during continuous duty.

Q: What materials are used in the transformers core and windings?

A: The core is manufactured with CRGO silicon steel for minimal losses, while the windings are made from high-conductivity electrolytic copper, ensuring excellent efficiency and longevity.

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