User's Manual

Introduction

The Fluke Models 1503, 1507, and 1508 are battery-powered insulation testers (hereafter,

Tester or UUT). These Testers meet CAT IV IEC 61010 standards. The IEC 61010

standard defines four measurement categories (CAT I to IV) based on the magnitude of

danger from transient impulses. CAT IV Testers protect against transients from the

primary supply level (overhead or underground utility service).

Although this manual contains calibration information for Models 1503, 1507, and 1508,

all illustrations and examples assume use of Model 1507. Table 1 provides a description

of all the symbols used in this manual.

The information provided in this manual includes the following:

• Warnings and Safety Information

• Specifications

• Basic Maintenance

• Performance Test Procedures

• Calibration Adjustment Procedure

• Replaceable Parts and Accessories

The information provided in this manual should only be used by qualified personnel. For

complete operating instructions and additional safety information, refer to the 1507/1503

Insulation Testers Users Manual or the 1508 Insulation Tester Users Manual.

Safety Information

XWWarning

To avoid possible electric shock or personal injury, follow these

guidelines:

• Use the Tester only as specified in this manual or the protection

provided by the Tester might be impaired.

• Do not use the Tester or test leads if they appear damaged, or if the

Tester is not operating properly. If in doubt, have the Tester serviced.

• Always use the proper terminal, switch position, and range for

measurements before connecting Tester to circuit under test.

• Verify the Tester’s operation by measuring a known voltage.

• Do not apply more than the rated voltage as marked on the Tester,

between the terminals or between any terminal and earth ground.

• Use caution with voltages above 30 V ac rms, 42 V ac peak, or 60 V dc.

These voltages pose a shock hazard.

• Replace the battery as soon as the low battery indicator (b) appears.

• Disconnect circuit power and discharge all high-voltage capacitors

before testing resistance, continuity, diodes, or capacitance.

• Do not use the Tester around explosive gas or vapor.

• When using the test leads, keep your fingers behind the finger guards.

• Remove test leads from the Tester before opening the Tester case or

battery door. Never operate the Tester with the cover removed or the

battery door open.