BZ3 DC standard resistance instruction manual
I. Overview
BZ3 type DC standard resistor (referred to as resistor) is designed and manufactured according to the professional standard ZBY162-83 "laboratory DC resistor" of the People's Republic of China, and fully meets the "IECSTANDARD First edition (1974-477) Laboratory DCResistors" standard. BZ3 DC standard resistors are used for industrial and mining, schools, scientific research and measurement units for DC resistance standards.
Second, the main technical parameters
1. Accuracy level: 0.01 level;
2. The rated values ​​of BZ3 DC standard resistors are:
Nine single values ​​of 0.001 Ω, 0.01 Ω, 0.1 Ω, 1 Ω, 10 Ω, 100 Ω, 1000 Ω, 10000 Ω, and 100000 Ω; the industry needs the above nine other ratings, such as 0.02 Ω, 50 Ω, 250 Ω, etc. The product is modeled after the model DMBZ to show the difference; its technical specifications are fully implemented with reference to BZ3.
3. When the resistor works in the transformer oil, the reference power is 0.1W, and the nominal power is 0.5W;
4. The insulation between the resistor circuit and the outer casing can withstand the withstand voltage test at a frequency of 50 Hz and 2000 volts for one minute under reference conditions;
5. The insulation resistance between the resistor circuit and the outside is not less than the nominal value of 105 ohms under the reference conditions.
108 megohms; the nominal value of 104 ohms is not less than 104 megohms; the nominal value of 103 ohms and below is not less than 103
Megohm.
6, weight (set): no more than 5Kg;
7, dimensions: diameter φ107mm × height 125mm
Third, the structure
1. In order to obtain good heat dissipation effect, most of the resistors adopt a bimetal shell structure; 0.001 Ω and 0.01 Ω are single metal shell structures.
2. The resistors are made of selected manganese-copper alloy materials.
Fourth, note:
1. The resistor should not exceed the specified reference power rating during use.
2. The resistor should be stored in a room with a temperature of 15 to 30 ° C and a relative humidity of not more than 80% and no harmful gases.
3, the resistor should avoid severe vibration
V. Supplementary rules:
1. The documents provided with the product are:
a, packing list
b. Certificate of conformity
c, instruction manual
2. Under the conditions that the user obeys the use and storage rules and ensures the seal is intact, within one year from the date of delivery inspection, the damage will be caused due to poor manufacturing quality or the quality standard will be lower than the standard. The factory warranty will be repaired or replaced free of charge.
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