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    臺灣標準電機SEW儀器儀表--ST-2551 Insulation Testers Up To 1 kV Digital

        
     
    ST-2551   Insulation Testers
    Up To 1 kV (Digital)  
    ST-2551
    FEATURES
     
     A LCD indicated instrument for Insulation (M Ohm), Continuity (Ohm) and AC Voltage.
     Instant operation is possible with a push button.
     In additon, for continuous measurement of M Ohm or ACV, a convenient timer is provided iwth automatic power off after three to five minutes to save the battery power.
     LED (red) indication when testing insulation and continuity.
     Use of a high efficiency and accurate DC-DC converter.
     Auto ranging.
     Most suitable for insulation resistance measurement of electrical household appliances, power line distribution and installation.
      CAT II 600V.
    SPECIFICATIONS
     
    INSULATION RESISTANCE
    Test Voltage (DC V) 250V/500V/1000V
    Output Voltage Open Circuit + 10%
    Measuring Ranges (Auto) 0-20/0-200/0-2000M Ohm
    Accuracy 0-20M Ohm : +/- (1.5%rdg+2dgt), 0-200M Ohm : +/- (2.5%rdg+2dgt), 0-2000M Ohm : +/- (5%rdg+3dgt)
    CONTINUITY TEST RANGES
    Measuring Ranges 20 Ohm/200 Ohm/2K Ohm
    Short Circuit Current 15.5/11/2.7 mA
    Accuracy 20 Ohm : +/- (2%rdg+4dgt), 200 Ohm : +/- (1.5%rdg+2dgt), 2K Ohm : +/- (1.5%rdg+2dgt)
    Buzzer Sounds Below 8 Ohm/10 Ohm/40 Ohm
    AC VOLTAGE RANGE
    Range 0-600V AC
    Accuracy +/- (1.5%rdg+2dgt)
    GENERAL
    Dispaly LCD 3-1/2 (2000 counts)
    Impedance 10M Ohm
    Power Source 1.5V (SUM-3) x 6 Type AA
    Dimensions 163(L) x 100(W) x 50(D)mm
    Weight Approx. 480g (battery included)
    Accessories Test eads, heavy-duty case, instruction manual, batteries