High Performance Generator Carbon Brushes

Short Description:

High-performance carbon brush assemblies tailored for large hydrogen-cooled turbine generators. Featuring excellent conductivity, wear resistance and vibration resistance, the products fit legacy generators perfectly. As direct replacement parts, they ensure stable current transmission, reduce energy loss and maintenance work, ideal for power plant generator excitation systems under high-speed and high-current operating conditions.

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High Performance Carbon Brush Blocks for Large Hydrogen-Cooled Turbine Generators

We supply professional carbon brush blocks and matched brush holder components dedicated to large hydrogen-cooled turbine generators, serving power generation enterprises for equipment maintenance, replacement and performance upgrade. Our carbon brush products are fully compatible with old and new generation equipment, and pass strict performance tests to deliver stable, efficient and durable operation under harsh industrial working conditions.

Applicable Equipment & Basic Generator Operating Parameters

Our carbon brush sets are customized to match large hydrogen-cooled turbine generators. The matched generator is a classic power generation unit widely used in power plants, running under high speed, high current and hydrogen cooling environment. The detailed core operating parameters of the supporting generator are listed in the table below:

Parameter Item	Specification
Generator Type	TFLQQ
Structure Form	KD
Number of Phases	3
Number of Poles	2
Rated Capacity	245,800 kVA
Output Power	221,220 kW
Rated Speed	3,000 rpm
Rated Frequency	50 Hz
Rated Voltage	16,000 V
Rated Current	8,870 A
Exciting Voltage	440 V
Field Current	2,760 A
Cooling Mode	Hydrogen-cooled (Hydrogen Pressure: 210 kpag)
Insulation Class	F
Ambient Operating Temperature	45°C
Armature Temperature Rise	55 ℃
Field Winding Temperature Rise	65 ℃
Execution Standard	ANSI C50.13 (1977)

Complete Product Dimensions & Matching Components

We provide a full set of carbon brushes, brush boxes and brush supports. All parts adopt precision dimensional processing, which can realize plug-and-play replacement without secondary modification. The dimensional parameters of all matched components are shown in the table below:

表格

Parts Name	Width (mm)	Thickness (mm)	Height (mm)	Additional Remarks
Brush Box	159	84	143	Standard matching part
Brush Support	90	32	192	Standard matching part
Carbon Brush	25.4	38.1	102	Wear limit remaining length: 45 mm

Core Compatibility & Replacement Advantage

Our carbon brush is a universal drop-in replacement for mainstream equivalent products in the industry. It is fully interchangeable with traditional carbon brush models used on large generators. After professional testing and verification, its resistivity, contact voltage drop and wear performance reach or even exceed the original matching products. Professional buyers and maintenance teams can directly replace old parts, no need to adjust equipment structure, greatly shorten on-site replacement time and reduce spare parts procurement difficulty.
Key Product Performance Features & On-site Working Value
1. Excellent Electrical Conductivity: Low contact resistance and low voltage drop effectively reduce power energy loss, ensure efficient and stable transmission of excitation current, and guarantee the full-load operation efficiency of the generator set.
2. Superior Wear Resistance: Adapt to long-term operation under 3000 rpm high speed and 2760 A high field current. The service life is extended significantly, which cuts down the frequency of shutdown maintenance and parts replacement, and reduces the overall operation cost of power plants.
3. Strong Vibration Resistance: Maintain stable electrical contact during generator operation, effectively eliminate sparking phenomenon caused by vibration, avoid premature failure of carbon brushes, and ensure the safety and continuity of power generation work.
4. High-precision Dimensional Fit: All components are manufactured strictly according to original equipment dimensions, with perfect assembly compatibility. The installation process is simple and efficient, suitable for routine maintenance and emergency parts replacement of power plant generators.
Application Scenarios & Service Orientation

This series of carbon brush blocks is specially developed for large hydrogen-cooled turbine generators, widely used in thermal power plants and other power generation enterprises. It is not only applicable to new generator units, but also perfectly compatible with legacy generators that have been in operation for many years. We focus on providing high-quality supporting spare parts for the global power industry, helping all power generation users realize long-cycle, stable and efficient operation of generator sets.