Testing Machine Standard:

GB 1094.11-2007.

Power dry-type transformer combustion performance testing device combustion testing machine

1, Purpose:
Used for measuring the combustion performance test of dry-type transformers in accordance with GB 1094.11-2007 "Dry type Transformers" for Class F1 dry-type transformers.

2, Functional requirements:
The function meets the requirements of the 28.3 F1 level dry-type transformer combustion performance test in GB 1094.11-2007 "Power Transformers Part 11: Dry type Transformers"; Before the experiment, calibrate the combustion test chamber, including air flow rate, temperature within the measurement section, and the adjustment amount of the regulating valve or exhaust system; During the experiment, real-time monitoring of various parameters (including temperature, transmittance, air flow rate, etc.) throughout the entire experiment process, weighing of the sample mass before and after the experiment, and calculation of energy, etc; The detection of corrosive and harmful gas emissions can detect gases and their contents such as hydrogen chloride (HCL), hydrogen cyanide (HCN), hydrogen fluoride (HF), hydrogen bromide (HBr), sulfur dioxide (SO2), formaldehyde (HCHO), etc; The selected equipment components meet the requirements for combustion performance testing. The backend testing software can be made into a display interface and can implement functions such as permission setting, communication, parameter setting, system calibration, data curve, report export, data saving, start stop, and system help. On this interface, experimental operations can be carried out, including data processing, experimental reports, and curve generation and printing.

3,  Test record requirements
Require recording throughout the entire experimental process
(1) Alcohol combustion time and electric heating time;
(2) Each temperature value should be recorded every 1 minute or less from the start of the experiment (when alcohol is ignited);
(3) The continuous recorded value (%) of visible light transmitted within the measurement section,
(4) The air flow rate (m3/s) within the measurement section measured every 1 minute or less; And it can draw corresponding data curves, which refer to Figure 1 (including temperature time curve, transmittance time curve, air flow time curve, etc.);
(5) The entire combustion process.

The backend testing software implements temperature rise calculation, and the calculation results have judgment function. The judgment criteria are shown in the standard
1. Installation requirements: The equipment should have a usable area of at least 3.5m in length, 3.5m in depth, and 9m in height, with appropriate maintenance space left around.

4.  Technical parameters
1) Detection of corrosive and harmful gas emissions: detection of halide and sulfide composition and content;
2) Inlet temperature: (20 ± 2) ℃;
3) Inlet flow rate: 0.210 × (1 ± 15%) m3/s; (756 m 3 /H ；12600L/min)
4) At the beginning of the experiment, the temperature of the air inside the test chamber, at the inlet, and the test sample were all between 15 ℃ and 30 ℃;
5) Radiation board power: 24kW;
6) Radiation plate temperature: (750 ± 5) ℃;
7) Test time: (0-120) min (adjustable);
8) Temperature measurement: Real time monitoring of temperature data and temperature rise values throughout the entire experimental process, with thermocouple accuracy of ± 0.1 ℃;
9) Transmittance within the measurement section: (0-100)%;
10) Accuracy of transmittance within the measurement section: 3%;
11) Weighing range of test sample: (0-2000) kg;
12) Sample weighing accuracy: ≤± 0.5%;
13) The test chamber is made of heat-resistant steel plate with a thickness of 1.5mm~2.0mm, and is equipped with a fire-resistant observation window.