Frequency 50hz ¡¨¤2hz Outside magnetic field intensity: ¡¨¹0.025mt Warm-up: the time of warm-up: ¡y30 minutes Using condition: Environment temperature: 5¡æ¡-40¡æ Relative humidity 25%¡«85% Test current: 0.05a¡«120a Current range 1a, 10a, 100a Imax=120a Test voltage 50v¡-480v Voltage range: 50v, 100v, 200v, 400v Umax=480v Accuracy: Current: ¡¨¤0.05%rg 0.125¡«120a Voltage: ¡¨¤0.05%rg 40v¡«480v Power: Active power ¡¨¤0.05% (50v¡«480v, 0.2a¡«120a, cosØ¡y0.5) Reactive power ¡¨¤0.1% (50v¡«480v, 0.2a¡«120a) Apparent power ¡¨¤0.1% (50v¡«480v, 0.2a¡«120a) Power factor Measurement range: 0¡«¡¨¤1 Accuracy: ¡¨¤0.05%rg (cosØ¡y0.5) Phase: Measurement range: 0¡ã¡«360¡ã Accuracy: 0.05¡ã(50hz) Frequency: 0.03%rd (45hz¡«65hz) Pulse output: Ttl level Load ¡ê¾2kw High frequency output port: fh Low frequency output port: fl Affection of temperature: (5¡æ¡«40¡æ) Voltage, current and frequency: ¡¨¹¡¨¤15ppm/¡æ Power: ¡¨¹¡¨¤30ppm/¡æ Communication port: Rs232 Rs485 Power supply: Voltage: ac220v¡¨¤22v Frequency: 50hz¡¨¤2hz Power: 40va Dimension: 432mm¡¨¢131mm¡¨¢308mm Weight: 15kg