螺栓加热棒试验方法与验收规则
Test method and acceptance rules of bolt heating rod
每个电加热器在装配完毕后，在常温下用500V兆欧表测量其绝缘电阻不得低于50 M Ω。并经受1500V耐压试验，历时1min而无击穿或闪路现象。然后在空气中于额定工作电压下通电加热2-3min，不得有过热现象，且绝缘电阻不得低于0.5 M Ω，泄漏电流每千瓦不大于0.5mA。并检测其功率，是否符合订货要求（偏差±5%），试验后，检查电加热器各部分是否完整无缺。每个电加热器应经制造厂质量检查部门检查合格，并附有合格证，方可发货。
After the assembly of each electric heater, the insulation resistance shall not be less than 50 m Ω measured with a 500 V megger at room temperature. And withstand 1500V withstand voltage test for 1min without breakdown or flashover. Then, the air shall be electrified and heated for 2-3min under the rated working voltage without overheating, and the insulation resistance shall not be less than 0.5m Ω, and the leakage current shall not be greater than 0.5mA per kilowatt. And check whether the power meets the order requirements (deviation ± 5%). After the test, check whether all parts of the electric heater are complete. Each electric heater shall be inspected to be qualified by the quality inspection department of the manufacturer and attached with the certificate before delivery.