YF-610J Technical Specification: Output Capacity: Linear 1KVA AC Input: a) Single Phase 2 Wire (1P2W); b) 220V + 10%; c) 50/60Hz + 5Hz; AC Output: a) Single Phase (1P2W); b) Voltage: Low Grade 0V ~ 150V (L~N); High Grade 0V ~ 300V (L~N) c) Frequency: 47 ~ 63Hz, 50 Hz, 60 Hz, 120 Hz, 240 Hz, 400 Hz d) Maximum Current: Low Grade: 8.4A; High Grade: 4.2A. Frequency Stability: <0.01% Load Regulating Rate: <0.5% Waveform Distortion: <0.3% Indicative Resolution a), 4-digit Digital Frequency Meter Resolution 0.1Hz b, 4-digit Digital Voltmeter Resolution 0.1Vc, 4-digit Digital Amperometer Resolution 0.001A (1MA) d, 4-digit Digital Power, Power Factor Meter Resolution 1W/0.001 Protection Function: Electronic Circuit Rapid Detection of Overvoltage, Overcurrent, Overcurrent Cooling device of pressure, over-high temperature-short circuit and automatic escape protection and alarm device: forced fan cooling environment: a) working temperature: 0 ~45 ~b) relative humidity: 10~90%.