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NR9600 series mobile distribution transformer comprehensive test system

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Product patent

Product description

Product Introduction

1The system meets the sampling test of transformer, box transformer, reactor and arc suppression coil;
2The system shall adopt a highly integrated integrated structure: all equipment such as test power supply, control circuit, display and measurement shall be highly integrated;
3The test vehicle is divided into human-computer interaction terminal and integrated test device. The test device shall include intelligent measurement module, power distribution module, automatic switching line module and wiring prompt module;
4Automatically call the intelligent measurement module, power supply module and switching device, start the detection item by item, and automatically complete the voltage and current output, parameter measurement, gear switching and data upload of each test item;
5The standardized module structure design shall be adopted, which is unified with the appearance structure of other intelligent measurement modules. It shall be built in the detection vehicle and shall have a direct plug-in structure design to facilitate maintenance and inspection;
6. detachable structure. For the indoor transformer and the situation that the mobile vehicle cannot enter, the test and detection device is separated from the vehicle. The device itself is supported by the on-board hydraulic rod and separated from the vehicle body. The test and detection device automatically supports the moving wheel, and electrically controls the displacement of the test device to the position of the tested transformer.

Test flow chart

Detection capability

Serial number	Test object name	Detection level	Test items
1	transformer	Part B	Measurement of DC insulation resistance between winding and ground and between windings
			Absorption ratio measurement
			Winding resistance measurement
			Voltage ratio measurement and connection group label verification
			No load loss and no load current measurement
			Short circuit impedance and load loss measurement
			Induced voltage withstand test
			Temperature rise test (below 630kVA)
			Measurement of no-load loss and no-load current at 90% and 110% rated voltage
			Zero sequence impedance measurement of three-phase transformer (below 630kVA)
			Insulating oil detection
2	reactor	Class C	Winding resistance measurement
			Insulation resistance measurement of winding to ground
			Insulating oil detection
3	Arc suppression coil	Class C	Insulation resistance measurement
			Winding resistance measurement
			Voltage ratio measurement (with secondary winding)
			Insulating oil detection
4	Box type substation	Part B	DC insulation resistance measurement
			DC Resistance Unbalance Rate Measurement
			Voltage ratio measurement and connection group label verification
			No load loss and no load current measurement
			Short circuit impedance and load loss measurement
			Induced voltage withstand test
			Temperature rise test (below 630kVA)
			No load current harmonic measurement
			Zero sequence impedance measurement of three-phase transformer (below 630kVA)
			Insulating oil detection