WXD7-33 type multi turn wire wound potentiometerDetailed product description：

The WXD7-33 multi coil wire wound potentiometer is suitable for precise adjustment of DC or low-frequency voltage and current in telecommunications, electrical, electronic instruments and equipment.  

Environmental conditions for use:
Environmental temperature: -50~+100 ℃;
Relative temperature: reaches 98% at a temperature of+40 ℃;
Atmospheric pressure: 107~47Kpa;
Vibration: vibration frequency of 10~500HZ, acceleration of 98m/s2;
Collision: frequency of 40-80 times/minute, acceleration of 147m/s2;
Centrifugal acceleration: 98m/s2.  

Type, main parameters, and dimensions
1. The types and external dimensions of potentiometers are shown in Figure 1 and Table 1.
The external dimensions and installation dimensions are shown in the diagram

Table 1

model	Shaft end form	axis length	Mechanical angle	Electrical angle	number of turns
WXD7-33	ZS-1	20·25·32	3600±20	3600±10	ten

2. The potentiometer has a nominal power of 5W and a maximum operating voltage of 200V (DC or AC RMS).
The nominal total resistance range of the potentiometer is 82 Ω~120K Ω, and its resistance series is according to Table 2 (i.e. E12 series). The total resistance error is ± 2%, ± 5%, and ± 10%.

Table 2

one	one point two	one point five	one point eight	two point two	two point seven
three point three	three point nine	four point seven	five point six	six point eight	eight point two

The linear accuracy of potentiometers is divided into ± 0.2%, ± 0.3%, ± 0.5%, and ± 1%.
5. Model and variety code of potentiometer and examples of filling in the contract: WXD4-23-3-10K Ω± 5% - C ± 0.3-25ZS-3-4-GB/T15880-95. The examples include model and variety code, rated power, nominal resistance and error, linear accuracy, shaft length, shaft end type, wear resistance level, and code of this standard.  

Main technical features
1. Electrical strength: withstand 750V (50HZ AC effective value) for 1 minute without breakdown or flying fox phenomenon;
2. Insulation resistance: pre tide ≥ 200M Ω, post tide ≥ 20M Ω;
3. Rotation torque: 50~500gf.cm, torque ratio of 1:3;
4. Wear resistance level: Level 3 for 10000 weeks, Level 4 for 5000 weeks;
5. Constant tidal heat: 40 ± 2 ℃, relative humidity 93 ± 3%, after 96 hours, Δ R/R does not exceed ± 1%;
6. Electrical load: After 48 hours of rated power load, Δ R/R shall not exceed 1%.