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Zico DT-5500 Instruction Manual

Digital insulation tester

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DIGITAL INSULATION TESTER
INSTRUCTION MANUAL
1
SAFETY INFORMATION
Read the following safety information carefully before
attempting to operate or service the meter.
To avoid damages to the instrument do not apply the
signals which exceed the maximum limits shown in the
technical specifications tables.
Do not use the meter or test leads if they look damaged.
Use extreme caution when working around bare
conductors or bus bars.
Accidental contact with the conductor could result in
electric shock.
Use the meter only as specified in this manual;
otherwise, the protection provided by the meter may be
impaired.
Read the operating instructions before use and follow
all safety Information.
Caution when working with voltages above 60V DC or
30V AC RMS. Such voltages pose a shock hazard.
Before taking resistance measurements or testing
acoustic continuity, disconnect circuit from main power
supply and all loads from the circuit.
2

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Summary of Contents for Zico DT-5500

  • Page 1 SAFETY INFORMATION DIGITAL INSULATION TESTER Read the following safety information carefully before  INSTRUCTION MANUAL attempting to operate or service the meter. To avoid damages to the instrument do not apply the  signals which exceed the maximum limits shown in the technical specifications tables.
  • Page 2: Specifications

    Safety symbols: Display: Large LCD with dual display Measurement Range: 200Ω, 200kΩ, 200MΩ/100V, Caution refer to this manual before using the meter. 200MΩ/100V, 2000MΩ/100V, 750V/ACV, 1000V/DCV. Dangerous voltages. Sampling Rate: 2.5 times per second. Zero Adjustment: Automatic adjustment. Meter is protected throughout by double insulation or Over Range Indicator: Number 1 of highest digit is reinforced insulation.
  • Page 3 1-2 Electrical Specifications AC Voltage (40Hz~400Hz) Accuracies are specified in the way: Range Resolution Accuracy Input Overload ±(…% of reading +…digits) at 23ºC±5ºC,below 80% RH. Impedance Protection 750V +(1.2%+10) 10MΩ 750Vrms OHMS Range Resolution Accuracy Max. open Overload Meg OHMS Circuit Protection Range...
  • Page 4: Parts And Controls

    2. PARTS & CONTROLS 3. BATTERY REPLACEMENT 3-1 How to connect test leads. a). On MΩ Range: Connect the red test lead into the “VΩ” terminal and the black lead into the “COM” terminal. b) On 200Ω and ACV Range: Connect the red test lead into the “VΩ”...
  • Page 5: Ac/Dc Voltage Measurements

    displayed the insulation resistance. Section VII indicated Many normal components of an installation are likely to that subdivision of large installations might be necessary be damaged if tested at 100V. Examples are power factor because of the large number of parallel insulation correction capacitors, low voltage mineral insulated resistance.
  • Page 6 d). Read the voltage value on LCD. commutator and separately test the armature, field coils and 7. POWER TOOLS AND AMALL brush rigging by connecting one megohmmeter lead to each APPLIANCES of them individually, leaving the other connected to the grounded motor housing.
  • Page 7 CABLES Disconnect the cable from the line. Also disconnect opposite end to avoid errors due to leakage from other equipment. Check each conductor to ground and /or lead sheath by connecting one megohmmeter lead to a ground and /or lead sheather and the other megohmmeter lead to each of the conductors in turn.