Fluke 1550B User Manual

MegOhmMeter
Making Measurements
11
Options to Consider Before Making an Insulation Test
In addition to performing a basic insulation test, the Meter includes a series of
features/functions that allow you to more precisely tailor the test to your
requirements. These include defining a test voltage, selecting a ramp test,
setting a time limit (duration) for the test, measuring polarization index (PI),
measuring dielectric absorption ratio (DAR), and measuring capacitance. Each
of these features is described in the following paragraphs. These features can
be used in combination and should be set, cleared, or accounted for (as
appropriate) before initiating an insulation test.
Selecting a Pre-set Test Voltage
To select a pre-set test voltage:
1. With the Meter turned on, press the H button to select TEST VOLTAGE.
00k
0
0M
G
V
0G
T
00G
GT
Mk
00M
M
500V
Test Voltage Display
ASW05F.EPS
2. Press the V or d button to scroll through the pre-set test voltage options
(250 V, 500 V, 1000 V, 2500 V, and 5000 V).
The selected test voltage appears in the upper-right of the display.
Note
The actual test voltage can be up to 10 % higher than the
selected test voltage.

Fluke 1550B Specifications

General

Insulation Test Voltage	250 V, 500 V, 1000 V, 2500 V, 5000 V
Safety Rating	CAT III 1000 V, CAT IV 600 V
Live Circuit Detection	Yes
Guard Terminal	Yes
Operating Temperature	-20°C to 50°C
Storage Temperature	-40°C to 60°C
Display	Digital
Power Supply	12 V rechargeable lead-acid battery
Test Voltage Accuracy	±2%
Automatic Calculation	DAR, PI