Principle Of Measurement And Resistance; Equipment And Environment - Fluke 1535 Calibration Manual

Principle of Measurement and Resistance

The Tester uses these formulas to measure insulation parameters and display the results:
Ohm's Law
Capacitance (Charge)
PI (Polarization Index)
DAR (Dielectric Absorption Ratio)
DD (Dielectric Discharge)

Equipment and Environment

Before you start the verification procedures or make calibration adjustments, refer to this section for the
equipment, system, and setup requirements.
See Table 2 for a list of requirements for the verification tests and calibration adjustment.
Equipment
High Voltage Meter
Current Source
Capacitors
Calibrator
Resistors
PC
USB Cable (1537 only)
Probe Fixture (1535 only)
R =
C =
PI =
DAR
DD
I = current after 1-minute discharge
V = voltage at moment before discharge
C = measured object capacitor
Table 2. Equipment Requirements
Description
±
3 kV, 1 %
±
1 nA to 50 nA, 5 %
μ ±
50 nA to 400 A, 1 %
μ ±
0.1 F, 3 kV, 10 %
μ ±
2 F, 3 kV, 10 %
DC voltage: -600 V to 600 V
±
Accuracy: 0.5 %
AC voltage: 0 V to 600 V
45 Hz to 500 Hz
±
Accuracy: 0.5 %
Ω Ω
OHM: 0 k to 60 k
±
Accuracy: 0.5 %
Ω Ω ±
200 k to 50 G , 3 kV, 1 %
Ω ±
500 G , 3 kV, 5 %
With serial communication
software
USB A to mini B
See Figure 1.
Principle of Measurement and Resistance
V
-- -
I
Q
--- -
V
R
10min
--------------- -
R
1min
R
1min
= ------------- -
R
15s
I
= -------------
×
V C
Recommended
Model
Fluke 5320A and
Fluke 8846
Keithley 6220
WIMA SNMKP Series
Fluke 5522A
Combinations of:
OHMITE Slim-Mox Series
and Ultra-Mox Series
Recommended software:
Tera Term
Fluke PN 4499448
Insulation Tester
Used on:
Verification Calibration
Tests Adjustment
X X
X
X X
X X
X
X
X
X
9