HTC DIT-90 Manual

Digital Insulation Tester
Model: DIT-90
1. SPECIFICATIONS
1.1 General Specifications
Display: 3 ½ digit liquid crystal display (LCD) 20mm
height with a maximum reading of 1999.
Over range Indication : (1) or (-1) is displayed at MSD
Low Battery : Displayed when the battery voltage drops is low.
Safety standard : Meets the requirement of IEC 1010 for installation
category II, 1000V phase to earth.
Measurement rate: 2.5 measurements per second.
Operating condition : 0°C to + 50°C, 0-75% RH
Storage conditions : -20°C to + 60°C, 0-80% RH with battery removed.
Accuracy : ± (3% rdg + 2dgt ) Accuracy specifications at 23±
5°C, less than 75% RH.
Power Supply : 9 volts (6 x 1.5V) battery, Eveready type 1015 or
equivalent. OR Power Adaptor 9V, 1.5 A
Dimensions: 139 x 99 x 54mm (approx)
Weight : 395gms including battery, Eveready type 1015 or
equivalent.
Accessories : Test leads (pair) X 1, 1.5V battery (installed) X
carrying case X 1.
Dielectric Strength : 3.5kV @ 50Hz for 1 min. between input terminals
and case.
Insulation Resistance : More than 50MΩ at 500V between circuit and case.
1.2 Electrical Specifications
Accuracies are ±(% reading plus number of digits) at 23 ± 5°C, and
humidity of less than 75% RH
□
DIT-90A
Model NO.
1000V
Rated Voltage
2000MΩ
Range（MAX.）
1MΩ
Resolution
Max. No. load
Voltage
Short Circuit
Current
Accuracy
2. SAFETY INFORMATION
1. The circuit under test must be de energized and isolated before
connections are made.
2. Circuit connections must not be touched during a test.
3. After insulation tests capacitive circuits must be allowed to be
discharged.
4. Test leads must be in good order, clean and have no cracked or
broken insulation.
5. Do not push the test button before all connections and preparations
are done. The instrument must only be used by suitable trained and
competent persons.
Warning and safety symbols
manual before using the meter.
voltages. C€ Comply with IEC1010 – 1.
1
□ □ □
DIT-90B DIT-90C DIT-90D
1000V 500V 500V
200MΩ 2000MΩ 200MΩ
0.1MΩ 1 MΩ 0.1 MΩ
± 25% of rated voltage
<2 mA
± (3%rdg + 2dgt)
Caution refer to this
Dangerous
□
DIT-90E
100V
200MΩ
0.1 MΩ