135KV Power Transformer

In modern power systems, the durable 135kV power transformer produced by SARAH Electric serves as a hub device for regional power grids, undertaking key tasks such as energy distribution, voltage conversion, and load regulation. Whether it is the energy hub of industrial towns or the backbone node of urban power grids, a high-performance 135KV transformer is the core to ensure power supply continuity and economy.

Product Features

1. The 135kv power transformer oil tank adopts a fully sealed structure (corrugated oil tank or capsule oil storage tank) to prevent air and moisture from entering, delay insulation aging, achieve "ten years of maintenance free", and significantly reduce operation and maintenance costs.

2. The winding adopts self-adhesive transposition wire and integral assembly process, combined with high-strength clamps, which can withstand sudden short-circuit current impact and ensure equipment safety in case of power grid faults.

3. We offer optional intelligent monitoring, supporting the installation of intelligent modules such as temperature online monitoring, oil chromatography analysis, partial discharge detection, etc., to real-time monitor equipment status and adapt to the needs of intelligent substation construction.

4. SARAH uses environmentally friendly and energy-saving materials, such as natural ester insulation oil (with a biodegradation rate>97%), which complies with the EU RoHS directive and reduces its impact on the environment.

Why choose our 135KV transformer?

Customization capability

The 135kV power transformer supports personalized customization of voltage, capacity, cooling method, intelligent monitoring, etc., to meet the needs of special scenarios;

Full lifecycle service: providing one-stop technical support from solution design, production and manufacturing to installation and commissioning, after-sales operation and maintenance;

Fast delivery

Standardized products can be delivered within 30 days, and emergency orders can activate the "green channel";

Global Cases

The 135kV power transformer has been applied in power grid upgrade projects in Southeast Asia, the Middle East, Africa and other regions, with a cumulative operation of over 100000 hours.

Industry standards and certification system

The 135kV power transformer strictly follows the following standards to ensure product quality and global mutual recognition:

-International standards: IEC 60076 series (general standard for power transformers), IEC 60726 (standard for dry-type transformers);

-National standards: GB 1094 series (power transformers), GB/T 6451 (technical parameters for oil immersed power transformers);

-Industry standards: DL/T 573 (Guidelines for Maintenance of Power Transformers), GB/T 10237 (Insulation Level of Power Transformers);

-Environmental certification: EU CE certification, RoHS environmental directive, China energy-saving product certification.

FAQ

Q: Can two 135kV power transformers operate in parallel?

A: Yes, provided that their voltage ratios, impedances, vector groups, and phase relationships are matched.

Q: What is the design service life of a 135kV power transformer?

A: Under normal operating conditions, the design service life can exceed 30 years.

To extend service life, it is recommended to conduct regular Dissolved Gas Analysis (DGA), monitor insulation condition, control operating temperatures, and maintain protection devices.

Q: What items should be checked during routine inspections of a 135kV transformer?

A: Routine inspections (at least once per shift) should focus on:

Oil level: Check if the oil level in the conservator is within the normal range (accounting for temperature correction).

Oil temperature: Check for abnormal rises in top-oil temperature (normally not exceeding 85°C).

Sound: Listen for abnormal noises (e.g., high-pitched sounds, knocking, or crackling).

Bushings: Inspect for cracks, discharge marks, or contamination.

Oil leakage: Check flanges, valves, and weld seams for leaks.

Breather: Check the color of the silica gel (blue indicates normal; pink indicates replacement is needed).

Cooling system: Verify that fans and oil pumps are operating correctly.

Gas relay: Check for gas accumulation inside.

Grounding: Ensure the grounding down-lead is intact.