金属管电阻箱
产品详情
产品特性用途：
● 金属箱体，散热通风系统。
● 尺寸依客户需求订制、功率负荷2KW-以上
● 芯体多样化：金属发热管、铝壳电阻芯、波纹电阻芯结构
● 电气安全特性：绝缘电压2.5KV、绝缘电阻≥100MΩ
● 符合耐机械震动IEC 60068-2-6和GB/T T5729-2003电气特性要求
● 广泛用于实验测试设备、电梯变频制动、起重机领域，把电机再生能量以热能方式消耗
电气特性：
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Characteristics 实验项目 |
SPEC 标准 |
Test Methods 实验方法 |
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1.Dielectric With standing Voltage (V/DC) 耐绝缘电阻测试(V/DC) |
No spark, mechanical damage, arc and defective insulation, insulation resistance is more than 100MΩ Min. 无机械损伤,电弧以及绝缘不良现象,绝缘阻值≥100MΩ Min. | Resistance ontology is placed in a 90 ° V shape within the test fixture, put high pressure tester is one of the electrode on the ontology, other contact with the terminal lead, voltage, test time DC1000V 1 min.电阻本体放置於一90°V状测试治具内,将高压测试仪的一电极放于箱体上,另一极与端子接触、通DC1000V电压、测试时间1分钟。 | |||||||||||||||
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2．Insulation voltage test (AC/DC). .耐绝缘电压测试（AC/DC） |
The insulation voltage is greater than or equal to AC2500V and the leakage current is less than 5mA.Above, cannot have the NG issue耐绝缘电压≥AC2500V、漏电流低于5mA以上不可出现NG现象。 | The insulation test clip is fixed with the metal shell of the resistor and the other end is sandwiched between the two ends of the resistance.将绝缘测试夹一端固定电阻器金属外壳、另一端夹于电阻两端导线测试设定时间60S. | |||||||||||||||
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3.Humidity Load Life 耐濕负荷測試 |
Δ R/R at ±3%  V=√PXΩ |
Resistance change after 1000 hours ( 1.5 hours on 0.5 hours off)at rated continuous working voltage in a humidity chamber controlled at 40±2℃and 90~95% relative humidity for 500 cycles.將电阻放置在溫度为40±2℃濕度为90~95%环境下,持續施加額定工作电壓1000小时(1.5小时ON 再0.5小时OFF,共500个循环) | |||||||||||||||
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4.Resistance Temperature Coefficient (PPM/ ℃) 温度系数 (位:PPM/℃) |
≤400PPM |
Natural resistance change per temperature degree centigrade. (PPM/℃)R1: Resistance value at reference temp. (T1) R2: Resistance value at reference temp. (T2) T1: 25±3℃ T2 : 125±3℃ 依照下列公式将电阻置于不同温度下,量测其阻值,并依公式计算其变化值 |
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5．Life test 寿命实验 |
Δ R/R at≤ ±5%+0.05Ω  V=√PXΩ |
The resistance was placed in the room temperature environment, and the continuous working voltage was applied for 250 hours, 500 hours and 1000 hours respectively after cooling. Resistance value recognition rate of 5% or less + 0.05 Ω, results all qualified將电阻放置在常溫环境下,持續施加工作电壓分别为250小时，500小时，1000小时冷却后。电阻认值变化率≤5%+0.05Ω、结果全部合格。 | |||||||||||||||
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6.Temperature Cycling 溫度循环 |
Δ R/R at≤ ±5% No obvious mechanical damage Δ R/R at≤ ±5% 无明显机械損 |
Resistance change after continuous 5 cycles for duty cycle as specified below.依據下列條件將电阻持續進行5个循环,取出量測阻值.
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7.Short Time Overload 短时間過负荷測試 |
ΔR/R /at ±2% No obvious arc combustion and burning phenomenon 标准型号 ΔR/R/at ±2% 无明显电弧,燃烧及烧焦现象 |
  Permanent resistance change after the application of a potential of 2.5 times rated continuous working voltage for 5 seconds at room temperature. E=2.5√PXR 施加2.5倍额定电压，时間5秒，冷卻後在室溫下量測其阻值变化值.电压計算公式E=2.5√PXR |
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8．Vibration experiment 振动实验 |
ΔR/R/at±3% surface without damage ΔR/R/at ±3%表面无损伤 IEC60068-2-6FC |
Set the vibrational volt frequency of 0.75mm to 10 ~ 500HZ, and the end acceleration is 98m/s X.Y.Z. 2 hours for each axis, a total of 6 hours. Confirm that the resistance change rate of the product is less than or equal to 3%设定振伏0.75mm频率10～500HZ，结束加速度98m/s X.Y.Z.轴各2小时，共6小时。确认产品阻值变化率≤3%。 |
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