SCB13 800kva Epoxy Resin Cast Power Transformer

What Is This Equipment?

The SCB13-800kVA Epoxy Resin Cast Power Transformer is a three-phase power transformer manufactured using a vacuum epoxy resin casting process. It belongs to the energy-efficient family of dry-type transformers.

Model Code Breakdown:

● S – Three Phase

● C – Cast Resin (Epoxy)

● B – Low-voltage Foil Winding

● 13 – Performance series code, representing energy efficiency level

What does it do?

The core function of this equipment is to step down high voltage (10kV or 35kV) to low voltage (400V/380V), providing safe and stable power to various electrical loads. Unlike traditional oil-filled transformers, it does not use insulating oil for cooling. Instead, it operates using epoxy solid insulation combined with natural air cooling.

Product Description

The SCB13-800kVA Epoxy Resin Cast Power Transformer is a high-efficiency, three-phase dry-type transformer designed for modern power distribution. It features epoxy resin vacuum casting, low-voltage foil windings, and meets GB 20052-2020 Level 2 energy efficiency standards (approaching Level 1). Ideal for applications demanding energy savings, fire safety, and reliability.

Rated at 800kVA with a standard voltage ratio of 10kV/0.4kV (customizable to 6kV, 20kV, or 35kV). The oil-free epoxy solid insulation eliminates leakage, fire, and explosion risks, making it suitable for high-rise buildings, subways, hospitals, data centers, and chemical plants.

Key electrical performance: no-load loss ≤1090W, load loss (120°C) ≤6260W, short-circuit impedance 6% (adjustable 4%-10%), partial discharge ≤5pC, and noise ≤55dB at 1 meter.

Equipped with an intelligent temperature control system (PT100 sensors, auto fan start/stop, overheat alarm and trip) and RS485 communication for BA system integration. The VPI casting process ensures moisture-proof, flame-retardant encapsulation. Core uses high-permeability silicon steel with step-lap joints. Standard protection IP20 (IP23 optional).

With a 30-year design life and minimal maintenance, the SCB13-800kVA is a reliable, economical choice for new or upgraded distribution systems.

Product Application

Typical Applications:

High-rise buildings, commercial complexes, hospitals, data centers, subway stations, airports, chemical plants, renewable energy stations, and any location where fire safety is a critical requirement.

Product Feature

High Efficiency & Energy Savings – Lower Operating Costs

No-load losses reduced by 20%-37% compared to SCB11 series; load losses reduced by 15%-30%

Typical 800kVA no-load loss ≤ 1090W, load loss (at 120°C) ≤ 6260W

Meets GB 20052-2020 Level 2 energy efficiency standards; some parameters reach Level 1

Economic Benefit Calculation:

Based on 8,000 operating hours per year at $0.11/kWh, compared to a standard SCB11 transformer, annual electricity savings are approximately $2,000-$2,700. The price difference is recovered in about 3 years.

Safety & Reliability – Fireproof and Explosion-Proof with Zero Risk

Core Advantages:

Self-extinguishing: Epoxy resin ignition point > 300°C; flame does not spread, and extinguishes itself when the heat source is removed

Oil-free design: Completely eliminates oil leakage, fire, and explosion risks; no need for an oil containment pit

High short-circuit withstand capability: The high-strength fiberglass-reinforced structure formed by vacuum casting increases short-circuit withstand capability by more than 30%

Extremely low partial discharge: Partial discharge can be controlled below 5pC, significantly slowing insulation aging

Addressing Real Customer Concerns:

Q: When installing a transformer in the basement of a high-rise building, what does the fire inspection focus on most?

A: Fire authorities focus primarily on "fire spread risk" and "toxic smoke emissions." Our SCB13 uses epoxy resin casting, which is inherently flame-retardant and does not produce halogenated toxic gases when burned (compliant with GB/T 1094.11-2022). This is a major advantage that oil-filled transformers cannot match. Many commercial complexes and hospital projects in first- and second-tier cities have passed strict fire safety reviews precisely because of this feature.

Q: Dry-type transformers are sensitive to humidity. Can they work in the rainy season in southern regions?

A: Conventional dry-type transformers are indeed sensitive to moisture, but our SCB13 uses a vacuum casting process where epoxy resin completely encapsulates the windings, forming a sealed insulation layer. The core and clamping hardware undergo special anti-corrosion treatment, allowing normal operation in 100% relative humidity environments. No drying treatment is required before restarting after shutdown.

Smart Monitoring – Temperature at a Glance

Standard Intelligent Temperature Control System:

Pre-embedded PT100 platinum resistance sensors in each phase winding for real-time temperature monitoring

Controller cyclically displays three-phase winding temperatures – easy to read

Automatically starts/stops bottom-mounted cooling fans (starts at >100°C, stops at <80°C)

Provides overtemperature alarm (adjustable setpoint) and overtemperature trip protection

Low Noise Operation – Quiet and Non-Disruptive

Measured Data:

For 800kVA and below, noise level ≤ 55dB measured 1 meter from the equipment

45° fully stepped lap core joint technology + vibration damping pads can further reduce noise by 5-8dB

Strong Overload Capacity – Reliable When It Matters Most

Overload Capability Parameters:

Natural cooling (AN) – can operate at 100% load continuously

Forced air cooling (AF) – capacity can be increased by 40-50%

Can withstand 150% rated load for 2 hours

Application Scenarios:

Summer peak demand periods, critical event power protection, temporary load sharing when one transformer fails – in these "critical moments," the SCB13's overload capacity ensures power supply continuity.

Maintenance-Free – Effortless and Worry-Free

Maintenance Advantages:

Oil-free – no need for periodic oil filtration or oil chromatography testing

Smooth winding surface – dust does not accumulate easily

No moving parts – extremely low failure rate

Daily maintenance only requires checking temperature display and cleaning cooling air ducts

Product Parameter (Specification)

After-Sales Service Commitment

Warranty Period: 12 months from date of shipment (extendable to 36 or 60 months with a paid service contract)

Technical Support: Lifetime free technical consultation; load calculation and solution optimization during selection phase

Field Service: Installation guidance, commissioning assistance, fault handling (free during warranty, cost-based after warranty)

Spare Parts Supply: Temperature controllers, fans, sensors, and other common parts kept in stock; next-day delivery via courier