CRRC 35kV Distribution Room

CRRC 35kV distribution room is a high-voltage power distribution unit for large-scale oilfield projects, delivering a 35 kV input voltage, 600 V/3300 V output voltage, and a modular “H”/”T” type layout, featuring IP54 protection level and vacuum load switch-fuse combination devices.
Equipped with power transformers with dedicated air ducts, this distribution room is engineered to supply stable power to multiple drilling rigs and fracturing skids, while its anti-corrosion enclosure ensures reliable operation in harsh oilfield environments.
As a core power infrastructure component, it integrates seamlessly with on-site power grids and large-scale oilfield equipment.
We offer comprehensive life-cycle support for the distribution room, covering equipment supply, on-site installation and commissioning, maintenance training, spare parts provision, and ongoing technical troubleshooting services.

Advantages of CRRC 35kV Distribution Room

The 35 kV high-voltage input design reduces transmission loss over long distances, adapting to the large coverage area of large-scale oilfield bases.
Its modular “H”/”T” type layout offers flexible configuration options (corridor/non-corridor), adapting to different site space constraints.
Power transformers with dedicated air ducts maintain stable operation even when the ambient temperature approaches 40°C, ensuring reliable power supply in high-temperature environments.
The IP54 protection level and anti-corrosion enclosure resist dust, humidity, and salt spray, adapting to harsh oilfield working conditions.
It features a complete set of safety protection functions (overcurrent, short-circuit, phase-deficient operation prevention) to ensure the safety and stability of the power distribution system.

Technical Specifications

35kV Distribution Room Description

Voltage: 35kV

The electric fracturing skid-mounted substation primarily provides power to the electric fracturing skid.

This series of frequency converter substations is manufactured in-house.

The 35kV substation is designed in-house and is currently under development and production.

Product Model	Motor Model	Rated Power	Rated Voltage	Rated Current	Rated Speed
3000 series skid motor	CDJD902	2000 kW	3300 V	402 A	500 r/min
5000 series skid motor	CDJD904	3155 kW	6600 V	320 A	865 r/min
7000 series skid motor	CDJD903	4420 kW	6600 V	450 A	776 r/min

Product Model	Model	Output Voltage	Max Continuous Output Current	Phase-Shifting Transformer Capacity	Rectification Pulsation
5000 Series Variable Frequency Drive Room	BP 10/6.6-2-7300	2 circuits, 0~6.6 kV	2 × 350 A	3650 kVA	36-pulse
5000 Series Reinforced Variable Frequency Drive Room	BP 10/6-2-8000 / BP 10/6.6-2-8000	2 circuits, 0~6 kV / 2 circuits, 0~6.6 kV	2 × 372 A / 2 × 380 A	4000 kVA	30-pulse / 36-pulse
7000 Series Variable Frequency Drive Room	BP 10/6.6-2-7300	2 circuits, 0~6.6 kV	2 × 350 A	3650 kVA	36-pulse
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Voltage: 35 kV
Function: Provides power supply for electrically driven fracturing skids

CRRC has established a system integration R&D department, possessing the capability to develop and design a complete power system from grid engineering to motor drive. It also holds a Level IV license for the installation (repair, testing) of power facilities, and has the capability to provide installation, maintenance, and testing services for power facilities with voltage levels below 35kV.

Chengdu CRRC Electric Motor Oil-to-Electric Conversion Monitoring System (Historical Curve Chart)

No.	Variable Name	Variable Value	Description
1	Motor 1 Current	527.70 A	Motor 1 Current
2	Motor 1 Speed	515.00 rpm	Motor 1 Speed
3	Motor 1 Power	375.00 kW	Motor 1 Power
4	Motor 1 Torque	4.30%	Motor 1 Torque
5	Motor 1 Voltage	598.00 V	Motor 1 Voltage
6	Motor 1 Operation	(Green dot: Running)	Motor 1 Operation
7	Motor 1 Temperature	51.2 ℃	Motor 1 Temperature
8	Inverter 1 Temperature	38.80 ℃	Inverter 1 Temperature
9	Inverter 1 DC Voltage	806.6 V	Inverter 1 DC Voltage
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