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UT581/582 INSTRUCTION MANUAL
2. Characteristics
2.0 This tester is suitable for using under single phase 230 V / 50 Hz.
(Operational Voltage Scope: 195 – 253 V)
2.1 It uses micro-controller with high accuracy, reliability and satiability.
2.2 Connectivity Checking: 3-LED Lamp signal is correct or not .
Correct connectivity: P-E & P-N display
two green light signal on but red light is off, If
not, you may incorrect to connect it.
2.3 Phrase Switch Selection: Can select positive (0°) or negative (180°)
semi-cycle commencing testing.
2.4 Over-range display“OL”indication. “OL mS” signal will be displayed on
LCD under the time limitation of the testing condition of over the time
limit.
2.5 Auto-data hold: Data hold for a while after each testing transaction.
2.6 Fast Trip Fixed: Current250mA (MAX: 40mS)(UT581 only).
2.7 AUTO RAMP Test: AUTO RAMP can test the trip test and trop current
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