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Photovoltaic Auxiliary Energy Storage Transformer

  • Photovoltaic Auxiliary Energy Storage Transformer

Key attributes

Brand ROCKWILL
Model NO. Photovoltaic Auxiliary Energy Storage Transformer
Rated frequency 50/60Hz
Rated capacity 200kVA
Series SGG

Product descriptions from the supplier

Description

Product Overview:

The grid-connected energy storage auxiliary isolation transformer for photovoltaic power generation is generally used for solar inversion, with common voltages including 800V to 400V, 380V, 690V to 400V, 540V to 400V, etc. (customizable as required); due to the low photoelectric efficiency of photovoltaic silicon panels, the transformer is specially required to have high efficiency. The photovoltaic isolation transformer is equipped with a microcomputer intelligent time controller to set daytime operation and nighttime stop for reducing no-load power loss, a temperature controller to real-timely monitor the operating temperature of the transformer, control the start and stop of the cooling fan, and automatically stop and disconnect the transformer when the operating temperature is too high to reach the set critical temperature for protecting the safety of the transformer body, a self-reset overvoltage and undervoltage protector to prevent islanding operation, a surge protector to effectively prevent lightning damage to equipment and improve the safety factor of the power generation system, and a knife switch on the grid-connected side to facilitate effective operation and maintenance of the equipment.

Key Features:

  • Smart Controls: Microcomputer time controller reduces nighttime no-load losses.

  • Safety Protections:

  • Temperature monitor with auto-shutdown at critical thresholds.

  • Over/under-voltage self-reset protector prevents islanding.

  • Surge arrester for lightning protection.

  • Grid-side knife switch for maintenance.

  • Flexible Configurations: Available in single/multi-unit combinations (1:2, 1:3, etc.) for scalable PV systems.

Technical data:

Operating Conditions

  • Ambient Temperature: -15℃~+50℃

  • Relative Humidity: 20 to 90% RH

  • Atmospheric Pressure: 860hPa~1060 hPa

  • Storage/Transport Temperature: -20℃~+55℃

  • Rated Capacity: 5-300kVA

  • Input Voltage: 800V

  • Input Current: As per actual capacity

  • Output Voltage: 400V

  • Output Current: As per actual capacity

  • Connection: Dyn11 (△/Y), Yny0 (Y/Y)

  • Efficiency: ≥96%

  • Frequency: 50Hz/60Hz

  • Insulation Impedance:≤500 MΩ under the test condition of 25 mA

  • Inductive Withstand Voltage: 125Hz/800V/60s

  • Insulation Class: Class H (155℃ temperature resistance)

  • Noise Level: ≤30dB

  • Temperature Rise: ≤115K allowable

  • Impedance Voltage Drop: ≤4%

  • Cooling Structure: Forced air cooling with temperature controller (fan starts automatically at set temperature per customer requirements)

  • Protection Class: IP54

  • Anti-Interference Method: Copper foil isolation, shielded grounding

  • Waveform Distortion: No additional distortion

  • Electrical Strength: 3000V AC power frequency sine voltage for 1min without breakdown/flashover

  • Insulation Resistance (input/output to ground): Test voltage ≥1000VDC, insulation resistance >50MΩ;

  • Overload Capacity: 2x rated current for 1min

Photovoltaic Auxiliary Energy Storage Transformer.png

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On-time delivery rate
Response time
100.0%
≤4h
Company overview
Workplace: 108000m²m² Total staff: 700+ Highest Annual Export(usD): 150000000
Workplace: 108000m²m²
Total staff: 700+
Highest Annual Export(usD): 150000000
Services
Business Type: Design/Manufacture/Sales
Main Categories: High Voltage Electrical Apparatus/Electric transformer
Whole life care manager
Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.
The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.

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