Fluke 1550C Calibration Manual

Insulation Tester
Performance Test Procedures
11
Output Voltage Test
In Table 4, the UUT output voltage is checked with various loads applied. In this test a
voltmeter with a high-voltage probe must be connected to the load resistor to measure the
UUT output voltage. Use 15 80K-6 for voltages below 6 kV.
Table 4. Output Voltage Test
Reading Limits
Step Voltage Range Load Resistor
Minimum Maximum
1 250 V 250 kΩ 250 V 275 V
2 250 V No Load 250 V 275 V
3 500 V 500 kΩ 500 V 550 V
4 500 V No Load 500 V 550 V
5 1 kV 1 MΩ 1000 V 1100 V
6 1 kV No Load 1000 V 1100 V
7 2.5 kV 2.5 MΩ 2500 V 2750 V
8 2.5 kV No Load 2500 V 2750 V
9 5 kV 5 MΩ 5000 V 5500 V
10 5 kV No Load 5000 V 5500 V
*11 10 kV No Load 10000 V 11000 V
*12 10 kV 10 MΩ 10000 V 11000 V
* 1555 only. Requires 80K-15 probe.
Short Circuit Current Test
To verify the UUT short circuit current, use the following procedure:
1. Connect an ammeter between the UUT + and - terminals.
2. Turn the UUT on and allow to startup.
3. Wait for Test Voltage to appear on the display and set the test voltage to 5000 V by
pushing
.
4. Push
 and note that the ammeter reading is within the reading limits referred to in
Table 5.
5. Push
 to discontinue the test.
Table 5. Short Circuit Current Test
Reading Limits
UUT Voltage Range
Minimum Maximum
1550C 5000 V 1.20 mA 1.80 mA
1555 10000 V 1.20 mA 1.80 mA

Fluke 1550C Specifications

General

Display type	-
Housing color	Grey, Yellow
Maximum voltage	5000 V
AC voltage range	250 - 5000 V
Operating altitude	0 - 2000 m
Overload protection	Yes
Storage temperature (T-T)	-20 - 65 °C
Operating temperature (T-T)	-20 - 50 °C
Operating relative humidity (H-H)	0 - 80 %
International Protection (IP) code	IP40
Battery technology	Sealed Lead Acid (VRLA)
Number of batteries supported	1

Weight and Dimensions

Depth	277 mm
Width	269 mm
Height	160 mm
Weight	3700 g