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Section 2
Phase CT Ratio .............................................................................................................................................. 2-1
VT Ratio ......................................................................................................................................................... 2-1
VT Conn ......................................................................................................................................................... 2-1
Line Impedances ............................................................................................................................................ 2-1
Line Length ..................................................................................................................................................... 2-1
Breaker Trip Fail Timer .................................................................................................................................... 2-1
Breaker Close Fail Timer ................................................................................................................................ 2-1
Slow Trip Time ................................................................................................................................................ 2-2
Phase Rotation ............................................................................................................................................... 2-2
Protection Mode ............................................................................................................................................. 2-2
Reset Mode .................................................................................................................................................... 2-2
ALT1, ALT2 Setting ......................................................................................................................................... 2-2
MDT Mode ...................................................................................................................................................... 2-2
Cold Load Time Mode ..................................................................................................................................... 2-3
79V (O->IU<) Time Mode ................................................................................................................................ 2-3
Voltage Display Mode ..................................................................................................................................... 2-3
Zone Sequence Coordination .......................................................................................................................... 2-3
Target Display Mode ....................................................................................................................................... 2-3
Local Edit ....................................................................................................................................................... 2-3
Remote Edit ................................................................................................................................................... 2-4
Meter Mode .................................................................................................................................................... 2-4
LCD Light ....................................................................................................................................................... 2-4
Unit ID ............................................................................................................................................................ 2-4
Demand Meter Constant ................................................................................................................................. 2-4
LCD Contrast .................................................................................................................................................. 2-4
Change Relay Password ................................................................................................................................. 2-4
Change Test Password ................................................................................................................................... 2-4
Section 3
Load Metering ................................................................................................................................................ 3-1
Energy Meter Rollover ................................................................................................................................... 3-1
Demand Metering .......................................................................................................................................... 3-2
Minimum/Maximum Metering ......................................................................................................................... 3-2
Section 4
Processor Specifications ................................................................................................................................ 4-1
Battery Backed-Up Clock ............................................................................................................................... 4-1
Ratings and Tolerances ................................................................................................................................. 4-3
Current Input Circuits ..................................................................................................................................... 4-3
Voltage Input Circuits ...................................................................................................................................... 4-3
Burden ............................................................................................................................................................ 4-3
Contact Input Circuits ..................................................................................................................................... 4-3
Control Power Requirements ........................................................................................................................... 4-3
Output Contact Ratings .................................................................................................................................. 4-3
Operating Temperature .................................................................................................................................... 4-4
Humidity ......................................................................................................................................................... 4-4
Transient Immunity ......................................................................................................................................... 4-4
Tolerances Over Temperature Range of -20° C to +55° C ................................................................................. 4-4
Dielectric ........................................................................................................................................................ 4-4
Weight (Standard DPU1500R Unit) ................................................................................................................. 4-4
Table of Contents
ABB Distribution Protection Unit 1500R
Page iii
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Table of Contents
