Schneider Electric E4800 manual Installing the Current Transformers

930-110-01-B.00	PowerLogicTM EM4800 Series
04/2011	Installation
Installing the Current Transformers	The three models of PowerLogic EM4800 meter use current transformers
	(CTs) with different secondary outputs. The PowerLogic EM4833 meter uses
	split-core 0.333V CTs (see Figure 12), and the PowerLogic EM4880 meter
	uses 80mA CTs only (see Figure 13) and is typically used where accuracy is
	important and long secondary CT wiring is required (up to 300 feet [91.44
	meters]). The PowerLogic EM4880 meter can also use a 5A CT if a 5A
	converter has first been installed.
	For instructions, see “Installing the CTs on the PowerLogic EM4833 and
	PowerLogic EM4880” on page 22, and “Installing 5A Converters and CTs on
	the PowerLogic EM4880” on page 23.
	The PowerLogic EM4805 uses 5A secondary CTs. For instructions, see
	“Installing the 5A CTs on the PowerLogic EM4805” on page 27.
	Current transformers connect to the PowerLogic EM4833 and PowerLogic
	EM4880 meters through the 50-conductor CT cable provided with the meter.
	Table 2 describes the CT wire pairs and the cable color scheme for each
	meter point. You can also find this information on the inside of the meter’s
	outer cover.
	Each CT has an X1 (positive) and X2 (neutral) wire pair and uses butt-splice
	connectors to attach the CT to a specific meter wire pair. The direction of the
	energy flow is indicated on the CT.
	Figure 12: PowerLogic EM4833 split-core 0.333V current transformer

DANGER

2

1

3

THIS SIDE T OWARDS SO UR

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	Legend:
	1	Source
	2	Energy flow
	3	Load
5	4	X1
	5	X2
	4

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