NJBK6

Relay Protection Relay NJBK6 Series Motor Protection Relay 1. General NJBK6 series motor protection relay is used to provide overload, phase failure, three-phase current unbalance and locked rotor protection for AC motors with a frequency of AC 50Hz, a rated insulation voltage of below 690V and a rated operational current of 1A~36A that operate continuously or intermittently. Standards: IEC 60947-4-1 2. Type designation N JBK 6 - 36 / □ / □ / □ Type of operation delay Rated control supply voltage Setting current code Frame size Design sequence No. Motor protection relay Company code 3. Operation conditions 3.1 Altitude: should not exceed 2000m; 3.2 Ambient tempeature: -5℃~+40℃, and the average temperature in 24h should not exceed +35℃； 3.3 Atmospheric conditions: The relative air humidity should not exceed 50% at the maximum temperature of +40℃. The relative humidity may be higher at lower temperatures, for example, the air humidity can be up to 90% at +20℃. Special measures should be taken if condensation occurs on the product occasionally due to temperature variation; 3.4 Pollution degree: 3; 3.5 The inclination between the mounting plane and the vertical plane should not exceed ±5°； 3.6 In non-explosive media that do not contain a sufficient amount of gas or conductive dust to cause metal corrosion or insulation failure; 3.7 In places with rain and snow protection equipment and not full of vapor; 3.8 In places where there is no significant shake, impact or vibration; 3.9 ...