一.瓷管功率电阻
1.功率:10W~5000W
2.阻值:0.2Ω~100KΩ
3.使用环境温度:-55℃ ~ +275℃
4.防护等级:IP54
5.环保:符合RoHS
6.电阻阻值分为固定式和可调式两种,满足客户多种使用要求。
7.电阻表面为涂覆绝缘树脂漆,材质均为环保产品,根据客户不同要求,采用扁平和立式波纹绕制,增强电阻散热功能,减小电阻体积,延长使用寿命。
8.应用范围:焊机、电梯、发电机、音响、变频器、电源测试,电路负载、起重、制动、电力、船舶、工业自动化等机电装备。
●电气、机械特性Electrical and mechanical characteristics
特性
Characteristics 规格值
Standards 试验方法
Test methods
阻值误差
Resistance tolerance ±1%(F) ±2%(G) ±5%(J) ±10%(K) 阻值测试仪测量
Testing by the resistance testing instrument
温度特性
Temperature coefficient 300ppm/℃ 常温Room temperature +100℃
短时间过负荷
Short-time load ΔR≤1% U= ,5秒seconds
绝缘阻值
Insulation resistance 1000MΩ,min 接线柱与支架壳之间的电阻值
The resistance between the terminals and the bracket
耐电压
Dielectric withstanding voltage 无机械损伤及无绝缘层破损
no evidence of mechanical damage or insulation breakdown
ΔR≤0.2% 接线柱与支架壳之间60秒承受的*大电压值The 60 seconds Max. insulation voltage between the terminals and the bracket
振动
Vibration 无机械损伤
no evidence of mechanical damage
ΔR≤0.2% XY方向各2小时 2hours each
频率frequency 10~55Hz
振幅amplitude 1.5mm
可焊性
Solderability 焊锡面积覆盖率85%以上
The soldering area is over 85% 245℃ 3秒seconds
●耐候特性Environmental charactaristics
特性
Characteristics 规格值
Standards 试验方法
Test methods
耐热性
Heat resistance 无机械损伤
no evidence of mechanical damage
ΔR≤0.5% 200℃ 2小时hours
耐湿性
Humidity 无机械损伤
no evidence of mechanical damage
ΔR≤0.5% 40℃ 95%RH
500 小时hours
耐湿负荷寿命
Load life in humidity 无机械损伤
no evidence of mechanical damage
ΔR≤0.5% 40℃ 95%RH
U=0.1 ,90 分钟minutes ON, 30 分钟minutes OFF, 500小时 hours
负荷寿命
Load life ΔR≤3% U= ,90 分钟minutes ON, 30 分钟minutes OFF, 1000 小时hours
不燃性(过负荷)
Flame retardant 不燃烧
no evidence of flaming or arcing 1~6倍的额定功率
1~6times rated power load