Qualifications required for electrical fire detection:
1. Metrology approval certificate issued by the Bureau of Quality and Technical Supervision. Obtaining this certificate means that the data you issue is legally recognized.
2. The fee producer certificate issued by the Price Bureau shows that the fire inspection fee is still a government-guided price, not a market-oriented behavior. This certificate shows that you can charge for fire detection.
3. The fire detection license issued by the fire department is the proof that the industry department recognizes your behavior in this industry. Any service involving the fire protection industry, including fire detection, technical consultation, intermediary services, etc. , need to be approved by the fire department. Otherwise, the fire department can punish according to the fire law.
Matters needing attention in electrical fire detection:
1, temperature is the key factor to reflect whether the electrical circuit is normal or not, because the abnormal circuit temperature indicates that there must be something wrong with the electrical circuit and equipment. Therefore, we must pay attention to the temperature of the circuit.
2. The neutral current consists of three-phase unbalanced load current and harmonic current of cubic and odd nonlinear load current. When the cross section of the neutral line is the same as the cross section of the phase line, the effective value of the neutral line current should not exceed the phase line current; When the cross section of the neutral line is twice that of the phase line, the effective value of the neutral line current should not exceed twice that of the phase line current.