Getting Started; Precautions; Password - ABB DPU 1500R Instruction Book

Getting Started

Precautions

Take the following precautions when using the ABB Distribution Protection Unit 1500R:
1. Incorrect wiring may result in damage. Be sure wiring agrees with connection diagram before energizing.
2. Apply only the rated control voltage marked on the unit.
3. High-potential tests are not recommended. If a control wire insulation test is required, fully withdraw the DPU1500R
from its case and perform only a DC high-potential test. Surge capacitors installed in the unit do not allow AC
high-potential testing.
4. Follow test procedures to verify proper operation. To avoid personal shock, use caution when working with
energized equipment. Only competent technicians familiar with good safety practices should service these devices.
5. In the event the self-checking function detects a system failure, the protective functions are disabled and the
alarm contacts are actuated. Replace the unit as soon as possible.

Password

6. A correct password is required to make changes to the relay settings and to test the output contacts. The preset
factory password is four blank spaces. Once you have chosen a new password and entered it into the system,
access will be denied if the password is forgotten. If you forget the password, contact the factory.
WARNING: Removal of the relay from the case exposes the user to dangerous voltages. Use extreme care.
Do not insert hands or other foreign objects into the case.
This instruction booklet contains the information to properly install, operate and test the DPU1500R but does not
purport to cover all details or variations in equipment, nor to provide for every possible contingency to be met in conjunction
with installation, operation or maintenance. Should particular problems arise which are not sufficiently covered for the
purchaser's purposes, please contact ABB Automation Inc.
.
Modbus® is a registered trademark of Modicon, Inc.
INCOM™ is a registered trademark of Cutler Hammer.
Introduction
ABB Distribution Protection Unit 1500R
Page xi