product Overview & Application Scenarios
The Goldhome HM305D is a high-precision electrical parameter tester designed specifically for power testing applications.
The HM305D is designed to meet the comprehensive testing needs of Goldhome:
- Power operation and maintenance scenarios: Daily inspections of equipment in substations and distribution rooms; measurement of electrical parameters for various power equipment; identification of potential operational hazards; and support for the efficient conduct of preventive testing.
- Industrial and mining enterprises: Maintenance and testing of on-site equipment such as transformers, motors, and switchgear; monitoring of operational parameters; and energy consumption tracking to provide data support for energy-saving retrofits.
- Project acceptance: Electrical parameter testing of relevant equipment following the completion of power engineering installations, issuance of compliance reports, and ensuring smooth project acceptance.
- Laboratory and Quality Inspection Scenarios: Measurement of basic electrical parameters for third-party testing agencies and power research institutes, providing precise data for equipment quality testing and technological R&D.
- Auxiliary Transformer Testing: Can be used in conjunction with the brand's no-load and load testers to perform comprehensive inspections of transformer operating conditions, supplement electrical parameter data, and enhance inspection reports.
Panel Description
Figure 1 Figure-load tester panel
Panel, from left to right are: printers, LCD screen, keyboard, power switch;
Figure 2 Figure-load tester backplane
Back from left to right are: working electrical outlet, three-phase test current input, three-phase test voltage input, communication port, ground column.
Test Instructions
Harmonic test
No-load test, the transformer magnetic core of the Li curve is nonlinear curve, the load current through the transformer will have a certain harmonic component, the number of harmonics and test the power of volume. Harmonic test that is done no-load test or load test, the situation does not change the test connection, the measurement of time through the transformer voltage and current harmonic components of the situation.
Press the aforementioned process or load test load test, test is complete, do not change the wiring and the regulator output voltage in the system's main interface, select the harmonic test, the harmonic components will appear below the list of pages:
Figure 1 harmonic component list page
The list is the fundamental harmonic component relative to the percentage of the system to a total of 31 harmonics, the first page shows 1 to 9 harmonics relative value, press "â†'" "â†"" key to page up and down to show the value of other harmonic components.
Bottom of the page shows all the column relative to the fundamental harmonic and the percentage.
In Figure 1, page press OK button, the page appears the following spectrum:
Figure 2 pages harmonic spectrum
Appendix
Test wiring diagram
Two-watt method No-load test wiring diagram
Two-watt method Load test wiring diagram
Tri-watt method No-load test wiring diagram
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