ZX25a type DC resistor is a multi-value resistor, using composite silver metal brush and contact point, so the contact pressure is small, long life, small change. The seat is made of insulating plastic, the whole machine insulation resistance is high. The panel reading values are arranged in two straight lines, which can be read simply and clearly. The resistor has no zero position, and the initial resistance value is 0.01Ω as the resistor's minimum step value. In the process of measurement, the zero resistance need not be deducted from the measurement value, which is convenient to use. The resistor elements are all made of high-quality alloy wire with no sense winding, and have been processed with strict process, with high stability. ZX25a type DC resistor can be used in horizontal and vertical direction.
The ZX25a DC resistor is a multi‑value resistor composed of six ten‑position switches in series. Each resistance element is connected between switch contacts, and the resistance value is adjusted by moving the brush position. The switches use silver‑plated metal brushes for low contact pressure, long life, and minimal drift. The device can be operated in both horizontal and vertical orientations and complies with the ZBY162‑83 laboratory resistor standard.
The manual describes the intended applications (laboratory, industrial, and educational), provides detailed technical specifications, and lists safety and maintenance guidelines such as pre‑rotation of knobs, power limits, storage conditions, and warranty information. This manual is written in Chinese.
| Resistance adjustment range | 0.01~11111.11 Ω |
|---|---|
| Dimensions | 285 × 215 × 140 mm |
| Weight | ≤4 kg |
The insulation resistance must be at least 500 MΩ.