Rockwell/AB - Power Monitor PM3000 - CR4 Discussion Thread

2 comments

nelson1 Associate Join Date: Dec 2007 Location: Dubai Posts: 32 Good Answers: 1	Rockwell/AB - Power Monitor PM3000 11/02/2011 5:44 AM
	We have installed Allen Bradley power monitor PM3000 with input voltage of 3.3KV and configured with 2PT's and 3 CT's and the following parameters are only shown: 1. L1 and L3 = 3.3KV 2. L2 = 0 KV We try several choices/setting below with negative result: Your choices include the following: • Delta 3 CT • Delta 2 CT • Direct Delta 3 CT • Direct Delta 2 CT • Open Delta 3 CT • Open Delta 2 CT • Wye Need your feedback on how we can configure and achieved our objective to display all the parameters(L1,L2,L3, KW-hours etc.) See attach wiring diagram: Thanks in advance for your feedback -Nelson __________________ nlp
	Register to Reply
	Pathfinder Tags: power monitor Rockwell/AB

Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

PeterT Guru Join Date: May 2010 Location: Liverpool, NY Posts: 957 Good Answers: 131	#1 Re: Rockwell/AB - Power Monitor PM3000 11/02/2011 9:46 AM
	By the schematic & wiring diagram you provided, you should choose Open Delta 3 CTs. The PTs are configured in an "open delta" arrangement, with windings forming two sides of a 3-phase delta transformer circuit. Check your wiring carefully - your snapshot of the diagram is rather small and fuzzy, so I cannot make out all the connections, but if it doesn't work you may have something wired wrong. __________________ To get the right answers, first you need to ask the right questions.
	Register to Reply

JRaef Guru Join Date: Sep 2006 Location: California, USA, where the Godless live next door to God. Posts: 4658 Good Answers: 796	#2 Re: Rockwell/AB - Power Monitor PM3000 11/02/2011 10:37 AM
	If you are reading 0 volts on L2, the configuration of your CTs (*CURRENT* Transformers) has absolutely nothing to do with that. You have made a mistake on the wiring of your PTs (*POTENTIAL* Transformers, as in Voltage Potential) . __________________ All I every really wanted to be, was... A LUMBERJACK!.
	Register to Reply

Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Rockwell/AB - Power Monitor PM3000