Supported System Types

EM3555	ZL0093-0A
Supported System Types	11/2011

The meter has a number of different possible system wiring configurations (see Wiring Diagrams). To configure the meter, set the System Type via the User Interface or Modbus register 130. The System Type tells the meter which of its current and voltage inputs are valid, which are to be ignored, and if neutral is connected. Setting the correct System Type prevents unwanted energy accumulation on unused inputs, selects the formula to calculate the Theoretical Maximum System Power, and determines which phase loss algorithm is to be used. The phase loss algorithm is configured as a percent of the Line-to-Line System Voltage (except when in System Type 10) and also calculates the expected Line to Neutral voltages for system types that have Neutral (12 & 40).

Values that are not valid in a particular System Type will display as “----” on the

User Interface or as QNAN in the Modbus registers.

Table 3 Supported system types

	CTs		Voltage Connections			System Type		Phase Loss Measurements			Wiring Diagram

Number	Qty	ID	Qty	ID	Type	Modbus	User	VLL	VLN	Balance	Diagram number
of wires						Register	Interface:
						130	SETUP>
							S SYS

Single-Phase Wiring

1	A	2	A, N	L-N	10	1L + 1n		AN		1
1	A	2	A, B	L-L	11	2L	AB			2
2	A, B	3	A, B, N	L-L with N	12	2L + 1n	AB	AN, BN	AN-BN	3

Three-Phase Wiring

3	A, B,	3	A, B, C	Delta	31	3L	AB, BC,		AB-BC-CA	4
	C						CA
3	A, B,	4	A, B,	Grounded Wye	40	3L + 1n	AB, BC,	AN, BN,	AN-BN-CN &	5, 6
	C		C, N				CA	CN	AB-BC-CA

8	© 2011 Schneider Electric All Rights Reserved.

EM3555 specifications

Schneider Electric EM3555 is a highly efficient energy monitoring device that plays a crucial role in optimizing energy management across various applications. As part of Schneider Electric’s extensive range of products, the EM3555 is designed for professionals who seek robust solutions for monitoring energy usage and improving operational efficiency.

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In terms of technology, the EM3555 incorporates the latest communication protocols, including Modbus RTU. This feature facilitates seamless integration with existing systems, enabling users to collect and analyze data efficiently. Furthermore, the EM3555 can be connected to Schneider's EcoStruxure platform, which offers advanced analytics and insights into energy usage, harnessing the power of IoT for smarter energy management.

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