What is the difference between 220v and 380v for hot runner coil heater? Is this a problem that customers often encounter when using them, does it affect temperature? Is the power consumption different? Which one is safer?
1. Under the same power submission, according to Ohm's law: P = UI, ie power (Watt) = voltage (volts) * current (A). The product itself does not change, the rated resistance of the heating tube is constant, it can be clearly seen that the current when using 220v and 380v is different.
2, the coil heater current is different, the required cable thickness is not the same, the electrical meter, switch, instrument, relay and other electrical components are also different choices, the above is the difference between the heating tube 220v and 380v.
Temperature, heating rate and power consumption are related to power. The heat generated at the same power and different rated voltages is the same. The same power consumption under the same working time conditions is the same. For safety, the voltage relationship is the same. Not big.
We need to know how much electricity is used in the coil heater, which is related to the rated power and the time of use.
1 kW electric heating appliance works once a hour,
For example, a 400 watt hot coil heater uses 400/1000 = 0.4 kWh for one hour, and 1000 kW = 2.5 kWh for 1 hour.
Note:
(1) kilowatt is the power unit, symbol: kw
(2) Watt is the power unit, symbol: w
(3) 1 kW = 1000 watts
(4) 1 kWh = 1 kWh