Product description： UPS is the most fundamental guarantee for equipment and network systems with increasing informatization and automation. For AC and DC UPS systems, batteries are extremely important as emergency power sources. Some batteries fail prematurely due to poor materials or structures, process defects, improper use, etc. The tester can be used as a discharging load. In the online mode, it can discharge with a set constant current through continuous control of the discharge current. Operating conditions Cooling Forced air cooling Temperature Operating temperature: -5~50℃; storage temperature: -40~70℃ Humidity Relative humidity: 0~90% (40±2℃) altitude Rated altitude: 4,000 m Noise ﹤60dB Battery charging and discharging instrument Technical index： Operating power supply Voltage In the case of a 48 V charger: single-phase three-wire system; 220V AC (–20%~+30%); frequency: 45~65Hz In the case of a 110 V charger: three-phase three-wire system; 380 VAC (–20%~+30%); frequency: 45~65Hz In the case of a 220 V charger: three-phase three-wire system; 380 VAC (–20%~+30%); frequency: 45~65Hz Withstand voltage test Input--casing: 2200Vdc 1min Input--output: 2200Vdc 1min Output--casing: 700Vdc 1min Safety Compliance line with EN610950 Common faults and methods: No. Fault Solution 1 The buzzer sounds when the discharge cable is being connected. The discharge cable is inversely connected. 2 The discharge current is normal; the voltage does not drop. The battery pack is not separated from the system. 3 The discharge current is out of control. Inspect and make sure the internal and external current sensors are correct.