Model 2088-20
Earth, Continuity, and Insulation Test Set
Description

The MI2088-20 is an excellent Earth resistance and Insulation test set. This unit also offers a wide range of additional measurements, such as; Resistivity, Continuity test, Ground resistance, and Varistor over-voltage protection devices.

• Insulation testing up to 29.9 GΩ with test voltages of 50 V to 1000V
• True RMS current measurement 0.1 to 200A (0.1 mA resolution)
• Three or four probe and clamp-on testing methods
• Internal storage for up to 1000 measurements
• EarthIso Link software – provides easy and fast arrangements of results is also included
• RS232 output
• Large, LCD display with backlight
• Battery operated
• 3-Year warranty

Technical Specifications
 
INSULATION RESISTANCE

Display range Riso (Un ≥ 250V):
Display range Riso (Un ≤ 250V):
Resolution:
Accuracy:
Nominal test voltage:
Generator current capability:
Display range (test voltage):

0 – 000 M to 29.9 GΩ
0 – 000 M to 199.9 MΩ
0.001, 0.01, 0.1, 1, 10, 100 MΩ
± 2 % + 2 digits …0 to 199.9 MΩ
50 to 1000 V in steps of 10 V
> 1 mA at Unom
0 to 1200 V
 
CONTINUITY OF PROTECTION CONDUCTORS (single measurement)

Display range:
Accuracy:
Test current:
Compensation of test leads (up to 5 Ω):
Automatic polarity exchange:

0.00 to 19.99, 20.0 to 199.9, 200 to 1999 Ω
± 2 % + 2 digits … ± 3 %
> 200 mA
Yes
Yes
 
CONTINUITY (continuous measurement)

Display range:
Accuracy:
Short-circuit test current:

0.0 to 199.9 Ω, 200 to 1999 Ω
± 3 % + 2 digits
< 7 mA
 
EARTH RESISTANCE (four-lead method)

Display range:
Resolution:
Basic accuracy:
Test voltage:
Short-circuit test current:
High noise rejection:
Automatic potential and current probe
resistance:

0 to 19.9 kΩ
0.01, 0.1, 1, 10 Ω
± 2 % + 3 digits … 0 to 2 kΩ
< 40 V / 125 Hz / sine wave
< 20 mA
Yes
Yes
     
EARTH RESISTANCE (four-lead method and clamp)

Display range:
Other characteristics:

 0 to 1.99 kΩ
See four-lead method
     
EARTH RESISTNACE (two test clamps)

Display range:
Basic Accuracy:

0 to 19.9 Ω, 20.0 to 100.0 Ω
± 10 % + 2 digits … ± 20 %
 
SPECIFIC EARTH RESISTANCE

Display range:
Calculation:
Distance between test rods:
Other characteristics:

0 to 1999 kΩm (kΩft.)
ρ = 2 π aRE
1 to 30 m (1 to 90 ft.)
See four-lead method
 
VOLTAGE AC / DC

Display range:
Accuracy:
Nominal frequency range:

 0 to 600 V
± 2 % + 2 digits
45 to 65 Hz, DC
 
CURRENT (True RMS) – Options A1018 and A1019

Measurement principle:
Display Range:
Resolution:
Basic accuracy:
Nominal frequency:

current clamp 1 A / 1 mA
0 to 200 A
0.1, 1 mA; 0.01, 0.1, 1 A
± 5 % + 5 digits … 0.5 mA to 200 A
50 / 60 Hz
 
VARISTOR OVERVOLTAGE PROTECTION DEVICES – Breakdown voltage

Measurement principle:
Display Range:
Accuracy:
Threshold current:

 DC voltage ramp (500 V/s)
50 to 1000 V
± 5 % + 10 V
1 mA
 
General

Power supply:
Visual and acoustic warnings:
Display:
Memory storage:
Computer connection:
Protection Classification:
Over-voltage Category:
Pollution Degree:
Protection Degree:
Working Temp. Range:
Max. Humidity:
Auto power off:
Dimensions:

Weight (unit only):

6 V (4 x 1.5 V IEC LR14)
Yes
Custom design LCD with backlight
Internally stores up to 1000 measurements
RS-232, standard D female
II - double insulation
CAT III / 300 V or CAT II / 600 V
2
IP 54
0 to 40 °C
85 % RH (0 to 40 °C)
Yes
4.3 in. (110 mm) x 10.4 in. (265 mm) x 7.3 in. (185 mm)
3.7 lbs. (1.7 kg)
Standard Accessories

• Instrument carry case, soft sided with shoulder strap
• Small soft sided carry case with shoulder strap
• Earth test lead set: 20 Meters (50 Meters available), include:
• General test cable (multicolor), 4 x 1 m (3.2 ft.)
• H test lead (blue), 20 m (65.6 ft.)
• S test lead (red), 20 m (65.6 ft.)
• ES test lead (green), 4.5 m (14.7 ft.)
• E test lead (black), 4.5 m (14.7 ft.)
• Earth test rods, Qty. 4
• Universal test cable (dual color), 2 x 1.5 m (4.9 ft.)
• Test tips – Red & Black, Qty. 1 ea.
• Alligator clip – Black, Qty. 1
• Batteries – Alkaline 1.5 V, Qty. 4
• RS-232 Cable
• EarthIso Link PC software package (for Windows 95 / 98 / 2000 / NT / XP)
• Handbook – “Measurements on electric installations in theory and practice”
• Operation manual
• Test Certificate

Optional Accessories


• A1018 		 
Low Range Clamp, 0.5 mA up to 200 A
• A1019


 

 Standard Range Clamp, 10 mA up to 200 A
 
SPECIFICATIONS ARE SUBJECT TO IMPROVEMENT AT ANY TIME.
     
         
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