Programmable DC power supply has the advantages of low voltage and large current, not only in the range of 0-10V, the maximum current up to 50kA, instantaneous current rise time is less than 5ms, less than 2ms, less than 1ms optional, very suitable for a variety of low-voltage electrical testing requirements. Not only that, the AC constant current source is also a commonly used test power supply for low-voltage appliances. The voltage is 20V/10V/5V constant voltage. The output capacity can be 300VA-30KVA or 1kVA-300kVA.

 

500kw load bank
 

We will look in detail at the rated on-off and off-off capability tests, where programmable DC power can be used.

Tests to verify that the switchgear has a specified ability to switch on and off under specified conditions of use. During the test, the resistor and reactor are connected to the load terminal of the switch under test to simulate the actual load (such as the motor load).

Short circuit on and off ability test is to verify the low voltage electrical equipment under the condition of load short circuit on and off ability test.

Measure the voltage drop at both ends of the measured part after the contact or conductive loop passes the programmable DC supply current. The purpose of measurement is to evaluate the resistance value at both ends of the measured part. The resistance value indirectly determines the assembly quality and heating temperature rise of the appliance. For example, for the contacts of small relays, thermocouples are generally not used to measure the temperature of the contacts, but to measure the voltage drop at both ends of the contacts for detection.

Measure the voltage drop at both ends of the measured part after the contact or conductive loop is connected to the programmable DC power supply. The purpose of measurement is to evaluate the resistance value at both ends of the measured part. The resistance value indirectly determines the assembly quality and heating temperature rise of the appliance. For example, for the contacts of small relays, thermocouples are generally not used to measure the temperature of the contacts, but to measure the voltage drop at both ends of the contacts for detection.