Schneider Electric iEM3200, iEM3300, iEM3100 User Manual

iEM3100 / iEM3200 / iEM3300 series

Energy meters User manual

DOCA0005EN-04 04/2014

www.schneider-electric.com

iEM3100 / iEM3200 / iEM3300 series user manual

The information provided in this documentation contains general descriptions and/or technical characteristics of the performance of the products contained herein. This documentation is not intended as a substitute for and is not to be used for determining suitability or reliability of these products for specific user applications. It is the duty of any such user or integrator to perform the appropriate and complete risk analysis, evaluation and testing of the products with respect to the relevant specific application or use thereof. Neither Schneider Electric nor any of its affiliates or subsidiaries shall be responsible or liable for misuse of the information contained herein. If you have any suggestions for improvements or amendments or have found errors in this publication, please notify us.

No part of this document may be reproduced in any form or by any means, electronic or mechanical, including photocopying, without express written permission of Schneider Electric.

All pertinent state, regional, and local safety regulations must be observed when installing and using this product. For reasons of safety and to help ensure compliance with documented system data, only the manufacturer should perform repairs to components.

When devices are used for applications with technical safety requirements, the relevant instructions must be followed.

Failure to use Schneider Electric software or approved software with our hardware products may result in injury, harm, or improper operating results.

Failure to observe this information can result in injury or equipment damage.

© 2014 Schneider Electric. All rights reserved.

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iEM3100 / iEM3200 / iEM3300 series user manual

Safety information

Important information

Read these instructions carefully and look at the equipment to become familiar with the device before trying to install, operate, service or maintain it. The following special messages may appear throughout this bulletin or on the equipment to warn of potential hazards or to call attention to information that clarifies or simplifies a procedure.

The addition of either symbol to a “Danger” or “Warning” safety label indicates that an electrical hazard exists which will result in personal injury if the instructions are not followed.

This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.

DANGER

DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING

WARNING indicates a potentially hazardous situation which, if not avoided, can result in death or serious injury.

CAUTION

CAUTION indicates a potentially hazardous situation which, if not avoided, can result in minor or moderate injury.

NOTICE

NOTICE is used to address practices not related to physical injury. The safety alert symbol shall not be used with this signal word.

Please note

Electrical equipment should be installed, operated, serviced and maintained only by qualified personnel. No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material.

A qualified person is one who has skills and knowledge related to the construction, installation, and operation of electrical equipment and has received safety training to recognize and avoid the hazards involved.

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iEM3100 / iEM3200 / iEM3300 series user manual

Notices

FCC Part 15 notice

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

•Reorient or relocate the receiving antenna.

•Increase the separation between the equipment and receiver.

•Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.

•Consult the dealer or an experienced radio/TV technician for help.

This Class B digital apparatus complies with Canadian ICES-003.

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iEM3100 / iEM3200 / iEM3300 series user manual

About the book

Document scope

This manual is intended for use by designers, system builders and maintenance technicians with an understanding of electrical distribution systems and monitoring devices.

Validity note

The meters are used to measure the amount of active energy consumed by an installation or a part of an installation.

This function meets the requirements for:

•consumption monitoring,

•evaluation of energy items (cost, accounting, etc.).

This function may also satisfy the power-saving incentives implemented by many countries.

Related documents

Title of documentation	Reference number
Installation sheet: iEM3100 / iEM3110 / iEM3115	S1B46581 / S1B62907
Installation sheet: iEM3150 / iEM3155	S1B46583 / S1B62908
Installation sheet: iEM3200 / iEM3210 / iEM3215	S1B46598 / S1B62910
Installation sheet: iEM3250 / iEM3255	S1B46602 / S1B62911
Installation sheet: iEM3135	HRB68964 / HRB72100
Installation sheet: iEM3165	HRB68991 / HRB72106
Installation sheet: iEM3175	HRB68988 / HRB72103
Installation sheet: iEM3235	HRB68995 / HRB72108
Installation sheet: iEM3265	HRB69003 / HRB72111
Installation sheet: iEM3275	HRB68999 / HRB72109
Installation sheet iEM3310 / iEM3350	HRB91204 / HRB91205
Installation sheet iEM3335 / iEM3355 / iEM3365 / iEM3375	HRB91202 / HRB91203

You can download these technical publications and other technical information from www.schneiderelectric.com.

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iEM3100 / iEM3200 / iEM3300 series user manual

Contents
	Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 4
	Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5
	About the book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
	Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	.7
Chapter 1	Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9
Chapter 2	Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	11
	Overview of meter functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	11
	Typical applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13
Chapter 3	Hardware and installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	15
	Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	15
	Hardware overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	16
	DIN rail mounting and dismounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	22
	Input, output and communications wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	24
	Power system wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	26
Chapter 4	Front panel display and meter setup . . . . . . . . . . . . . . . . . . . . . . . . . .	33
	Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	33
	Data display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	33
	Resets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	36
	Multi Tariff feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	36
	Meter status information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	37
	The device clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	37
	Device configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	38
	Modifying parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	39
	Configuration mode menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	40
Chapter 5	Communications via Modbus RS-485 . . . . . . . . . . . . . . . . . . . . . . . . .	51
	Modbus communication overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	51
	Modbus functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	52
	Command interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	53
	Modbus register list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	57
	Read Device Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	61
Chapter 6	Communications via LonWorks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	63
	LonWorks communications overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	63
	LonWorks communication implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	63
	Standard network variable types (SNVTs) and configuration properties for reading
	data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	64
	Meter configuration properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	68
	Echelon LonMaker plug-in for data display and meter configuration . . . . . . . . . . .	71

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	iEM3100 / iEM3200 / iEM3300 series user manual
Chapter 7	Communications via M-Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	75
	M-Bus communications overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 75
	M-Bus protocol support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 76
	M-Bus protocol implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 76
	Variable data structure telegram information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 77
	Telegram information for data records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 79
	Telegram information for meter configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 82
	M-Bus tool for data display and meter configuration . . . . . . . . . . . . . . . . . . . . . . . .	. 85
Chapter 8	Communications via BACnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	89
	BACnet communications overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 89
	BACnet protocol support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 89
	BACnet communications implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 90
	BACnet object and property information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 91
Chapter 9	Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	97
	Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 97
	Mechanical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 99
	Environmental characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 99
	Measurement accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 99
	MID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	100
	Internal clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	100
	Modbus communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	100
	LonWorks communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	100
	M-Bus communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	101
	BACnet communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	101
Chapter 10	Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	103
	Diagnosis screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	103
	Diagnostic codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	104
Chapter 11	Power, energy and power factor . . . . . . . . . . . . . . . . . . . . . . . . . . . .	105
	Power (PQS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	105
	Energy delivered (imported) / energy received (exported) . . . . . . . . . . . . . . . . . . . .	106
	Power factor (PF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	106
	Power factor register format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	108

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iEM3100 / iEM3200 / iEM3300 series user manual	Safety precautions

Chapter 1 Safety precautions

Installation, wiring, testing and service must be performed in accordance with all local and national electrical codes.

Carefully read and follow the safety precautions outlined below.

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

•Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E in the USA or applicable local standards.

•This equipment must only be installed and serviced by qualified electrical personnel.

•Turn off all power supplying this device and the equipment in which it is installed before working on the device or equipment.

•Always use a properly rated voltage sensing device to confirm power is off.

•Before performing visual inspections, tests, or maintenance on this equipment, disconnect all sources of electric power. Assume that all circuits are live until they have been completely de-energized, tested and tagged. Pay particular attention to the design of the power system. Consider all power supply sources, particularly the potential for backfeed.

•Replace all devices, doors and covers before turning on power to this equipment.

•Do not exceed the device’s ratings for maximum limits.

Failure to follow these instructions will result in death or serious injury.

WARNING

UNINTENDED OPERATION

Do not use the meter for critical control or protection applications where human or equipment safety relies on the operation of the control circuit.

Failure to follow these instructions can result in death, serious injury or equipment damage.

WARNING

INACCURATE DATA RESULTS

•Do not rely solely on data displayed on the front panel or in software to determine if the device is functioning correctly or compliant with all applicable standards.

•Do not use data displayed on the front panel or in software as a substitute for proper workplace practices or equipment maintenance.

Failure to follow these instructions can result in death, serious injury or equipment damage.

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Safety precautions	iEM3100 / iEM3200 / iEM3300 series user manual

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iEM3100 / iEM3200 / iEM3300 series user manual		Overview
Chapter 2	Overview

What is in this chapter?

This chapter contains the following topics:

Overview of meter functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Typical applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Overview of meter functions

The meters provide the essential measurement capabilities (for example, current, voltage, and energy) required to monitor a 1- or 3-phase electrical installation.

The key features of the meters are:

•measurement of active and reactive energy,

•Multi Tariffs (up to 4) controlled by internal clock, digital inputs or communication,

•MID compliance for many of the meters,

•pulse outputs,

•display (current, voltage, and energy measurements),

•communications via Modbus, LonWorks, M-Bus or BACnet protocols.

Main characteristics

63 A meters

		Function	iEM3100	iEM3110	iEM3115	iEM3135	iEM3150	iEM3155	iEM3165	iEM3175
	Direct measurement (up to 63 A)		√	√	√	√	√	√	√	√
	Active Energy measurement accuracy class (total and		1	1	1	1	1	1	1	1
	partial kWh)
	Four Quadrant Energy measurements		–	–	–	√	–	√	√	√
	Electrical measurements (I, V, P, ...)		–	–	–	√	√	√	√	√
		Controlled by internal clock	–	–	4	4	–	4	4	4
	Multi Tariff	Controlled by digital input(s)	–	–	4	2	–	2	2	2
		Controlled by communications	–	–	–	4	–	4	4	4
	Measurement display (number of lines)		3	3	3	3	3	3	3	3
		Programmable (status, tariff	–	–	–	1	–	1	1	1
	Digital inputs	control, or input monitoring)
		Tariff control only	–	–	2	–	–	–	–	–
		Programmable (energy pulsing	–	–	–	1	–	1	1	–
	Digital outputs	or overload alarm)
		Pulse output only	–	1	–	–	–	–	–	–
	Overload alarm		–	–	–	√	–	√	√	√
		Modbus	–	–	–	–	√	√	–	–
	Communications	LonWorks	–	–	–	–	–	–	–	√
		M-Bus	–	–	–	√	–	–	–	–
		BACnet	–	–	–	–	–	–	√	–
	MID compliant		–	√	√	√	–	√	√	√
	Width (18 mm module in DIN rail mounting)		5	5	5	5	5	5	5	5

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Overview iEM3100 / iEM3200 / iEM3300 series user manual

125 A meters

		Function		iEM3300	iEM3310	iEM3335	iEM3350	iEM3355	iEM3365	iEM3375
Direct measurement (up to 125 A)				√	√	√	√	√	√	√
Active Energy measurement accuracy class (total and partial				1	1	1	1	1	1	1
kWh)
Four Quadrant Energy measurements				–	–	√	–	√	√	√
Electrical measurements (I, V, P, ...)				–	–	√	√	√	√	√
		Controlled by internal clock		–	–	4	–	4	4	4
Multi Tariff		Controlled by digital input(s)		–	–	2	–	2	2	2
		Controlled by communications		–	–	4	–	4	4	4
Measurement display (number of lines)				3	3	3	3	3	3	3
Digital inputs (programmable for status, tariff control, or input				–	–	1	–	1	1	1
monitoring)
		Programmable (energy pulsing or		–	–	1	–	1	1	–
Digital outputs		overload alarm)
		Pulse output only		–	1	–	–	–	–	–
Overload alarm				–	–	√	–	√	√	√
		Modbus		–	–	–	√	√	–	–
Communications		LonWorks		–	–	–	–	–	–	√
		M-Bus		–	–	√	–	–	–	–
		BACnet		–	–	–	–	–	√	–
MID compliant				–	√	√	–	√	√	√
Width (18 mm module in DIN rail mounting)				7	7	7	7	7	7	7
1 A / 5 A meters
	Function		iEM3200	iEM3210	iEM3215	iEM3235	iEM3250	iEM3255	iEM3265	iEM3275
Measurement inputs through CTs (1 A, 5 A)			√	√	√	√	√	√	√	√
Measurement inputs through VTs			–	–	–	√	√	√	√	√
Active Energy measurement accuracy class (total and			0.5S	0.5S	0.5S	0.5S	0.5S	0.5S	0.5S	0.5S
partial kWh)
Four Quadrant Energy measurements			–	–	–	√	–	√	√	√
Electrical measurements (I, V, P, ...)			–	–	–	√	√	√	√	√
		Controlled by internal clock	–	–	4	4	–	4	4	4
Multi Tariff		Controlled by digital input(s)	–	–	4	2	–	2	2	2
		Controlled by communications	–	–	–	4	–	4	4	4
Measurement display (number of lines)			3	3	3	3	3	3	3	3
		Programmable (status, tariff	–	–	–	1	–	1	1	1
Digital inputs		control, or input monitoring)
		Tariff control only	–	–	2	–	–	–	–	–
		Programmable (energy pulsing	–	–	–	1	–	1	1	–
Digital outputs		or overload alarm)
		Pulse output only	–	1	–	–	–	–	–	–

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iEM3100 / iEM3200 / iEM3300 series user manual									Overview
	Function		iEM3200	iEM3210	iEM3215	iEM3235	iEM3250	iEM3255	iEM3265	iEM3275
	Overload alarm		–	–	–	√	–	√	√	√
		Modbus	–	–	–	–	√	√	–	–
	Communications	LonWorks	–	–	–	–	–	–	–	√
		M-Bus	–	–	–	√	–	–	–	–
		BACnet	–	–	–	–	–	–	√	–
	MID compliant		–	√	√	√	–	√	√	√
	Width (18 mm module in DIN rail mounting)		5	5	5	5	5	5	5	5

Typical applications

This range is a cost effective solution to monitor feeder circuits. These meters can monitor energy consumption by usage, by zone or by feeder in the cabinet. They can be used to monitor feeders in a main switchboard or to monitor the main in a distribution cabinet.

iEM31•• and iEM33•• series

	Functions	Advantages
	Can directly measure feeders up to:	Saves installation time and space in the cabinet
	iEM31••: 63 A
		No wiring to manage
	iEM33••: 125 A
		Clear distribution network
	Embedded current transformers (CTs)
	Adapted to be installed with Acti9 iC65 (iEM31••) or Acti9 C120	Can be used in three-phase systems with or without neutral
	(iEM33••) circuit breakers
	Can be used for single-phase multi-circuit monitoring	3 single feeders can be monitored with a single meter
	iEM32•• series

Functions	Advantages
CT and VT connection	Can be used in low or medium voltage applications
Flexible configuration	Can be adapted to any distribution network with or without neutral

Typical applications

The following table presents some of the functions of the different meters, the advantages and main applications.

	Functions	Advantages	Applications	Meter
	Total and partial energy counters	Energy usage monitoring	Sub-billing management	All
			Metering applications
	Internal clock	Saves the date and time of last reset	Provides the timestamp of the last reset of the	All (except iEM3100 /
			partial energy accumulation	iEM3200 / iEM3300)
	Pulse output with a configurable	Collect pulses from the meter with a Smartlink	Remote monitoring of energy consumption	iEM3110 / iEM3310 /
	pulse weight of up to 1 pulse per		Integrate the meter in to a system monitoring of
		system, PLC or any basic acquisition system		iEM3210
	1 Wh		a large number of devices
				iEM3115 / iEM3135 /
			Energy demand management	iEM3155 / iEM3165 /
	Manages up to four tariffs,	Categorize energy consumption into On Peak and Off		iEM3175
	controlled by the digital input(s),	Peak, working days and weekends, or by different	Sub-billing management	iEM3215 / iEM3235 /
	internal clock or communications	electricity sources (for example, from the utility and	Identification of local energy consumption	iEM3255 / iEM3265 /
	(depending on meter model)	an electrical generator)		iEM3275
			behavior by zone, by usage or by feeder
				iEM3335 / iEM3355 /
				iEM3365 / iEM3375
				iEM3135 / iEM3155 /
	Measures essential electrical	Instantaneous measurements help you monitor the		iEM3165 / iEM3175
		imbalance between phases.	Monitoring of feeders or any sub-cabinet	iEM3235 / iEM3255 /
	parameters like current, average	Total power allows you to monitor the feeder load		iEM3265 / iEM3275
	voltage and total power.
		level.		iEM3335 / iEM3355 /
				iEM3365 / iEM3375

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	Overview		iEM3100 / iEM3200 / iEM3300 series user manual
	Functions	Advantages	Applications	Meter
	M-Bus communications	Communicate advanced parameters using	M-Bus network integration	iEM3135 / iEM3235 /
		M-Bus protocol		iEM3335
		Communicate advanced parameters using Modbus		iEM3150 / iEM3155
	Modbus communications		Modbus network integration	iEM3250 / iEM3255
		protocol
				iEM3350 / iEM3355
	BACnet communications	Communicate advanced parameters using BACnet	BACnet network integration	iEM3165 / iEM3265 /
		MS/TP protocol		iEM3365
	LonWorks communications	Communicate advanced parameters using LonWorks	LonWorks network integration	iEM3175 / iEM3275 /
		communications		iEM3375
		Identification of imported and exported active and	Ideal for facilities with back-up generators or
	Four quadrant calculation	reactive energy allows you to monitor energy flow in
			green power capabilities (for example, solar
		both directions: delivered from the utility and
			panels or wind turbines)
		produced on-site
				iEM3135 / iEM3155 /
			Manage energy consumption and make
	Measurement of active, reactive	Allows you to monitor energy consumption and	informed investment to reduce your energy bill	iEM3165/ iEM3175
	and apparent energy.	production	or penalties (for example, installing capacitor	iEM3235 / iEM3255 /
			banks)	iEM3265 / iEM3275
		Can be programmed to:	This allows for monitoring of:	iEM3335 / iEM3355 /
		Count pulses from other meters (gas, water, etc.)	WAGES	iEM3365 / iEM3375
	Programmable digital input	Monitor an external status	Intrusion (for example, doors opening) or
		Reset the partial energy accumulation and start a	equipment status
		new period of accumulation	Energy usage
		Can be programmed to:	This allows you to:	iEM3135 / iEM3155 /
			Collect pulses from the meter with a Smartlink	iEM3165
		be an active energy (kWh) pulse output, with a
	Programmable digital output		system, PLC or any basic acquisition system	iEM3235 / iEM3255 /
		configurable pulse weight
			Monitor power levels at a detailed level and to	iEM3265
		Alarm on a power overload at a configurable pickup
			help detect an overload before the circuit	iEM3335 / iEM3355 /
		setpoint
			breaker trips	iEM3365

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iEM3100 / iEM3200 / iEM3300 series user manual	Hardware and installation

Chapter 3 Hardware and installation

What is in this chapter?

This chapter contains the following topics:

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Hardware overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 DIN rail mounting and dismounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Input, output and communications wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Power system wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Dimensions

iEM31•• and iEM32•• meters

										A	Without communications
										B	With communications
mm
in									87
	ON
									3.43
500	/kWh							45
								1.77	95.0	101.5
				OK		ESC			3.74	4.00
					Config	Reset
N	N’	L1	L1’	L2	L2’	L3	L3’
								63.5
			90				69	2.50
			3.54				2.71

iEM33•• meters

										A	Without communications
										B	With communications
mm									93.8
in				ON
			200	/kWh				45	3.70
								1.77	103.2	108.4
						OK	ESC		4.06	4.27
						Config	Reset
N	N’	L1	L1’	L2	L2’	L3	L3’
			126.0					63.8
							69.3	2.51
			4.96				2.73

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Hardware and installation	iEM3100 / iEM3200 / iEM3300 series user manual

Hardware overview

All meters: Meter sealing points

All meters have sealing covers and sealing points to help prevent access to inputs and outputs and current and voltage connections.

A	Sealing points
B	Sealable covers
ESC
OK
iEM3100 / iEM3110 / iEM3115 - Direct measurement up to 63 A

The various features of the iEM3100 / iEM3110 / iEM3115 are shown in the diagram below:

C/-	T1	T2	S0+ S0-
			ON
		500	/kWh

				OK		ESC
					Config	Reset
N	N’	L1	L1’	L2	L2’	L3	L3’

A	Digital inputs for tariff control (iEM3115)
B	Display for measurement and configuration
C	Pulse output for remote transfer (iEM3110)
D	Cancel
E	Confirm
F	Scroll
G	Current and voltage inputs (direct measurement up to 63 A)
H	Energy pulsing LED (used to verify accuracy)
I	Status LED: on/off, error

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iEM3100 / iEM3200 / iEM3300 series user manual	Hardware and installation

iEM3135 - Direct measurement up to 63 A and M-Bus communications

The various features of the iEM3135 are shown in the diagram below:

M-Bus

C/- DI

C DO

ON 500 /kWh

OK	ESC
	Reset
	Config

A	Digital input
B	Digital output
C	Communication port
D	Communications LED
E	Display for measurement and configuration
F	Cancel
G	Confirm
H	Scroll
I	Current and voltage inputs (direct measurement up to 63 A)
J	Energy pulsing LED (used to verify accuracy)
K	Status LED: on/off, error

N N’ L1 L1’ L2

L2’

L3 L3’

iEM3150 / iEM3155 / iEM3165 - Direct measurement up to 63 A and Modbus or BACnet communications

The various features of the iEM3150 / iEM3155 / iEM3165 are shown in the diagram below:

0V D0/- D1/+

RS485

C/- DI N.C. C DO N.C.

ON 500 /kWh

OK	ESC
	Reset
	Config

A	Digital input (iEM3155/iEM3165)
B	Digital output (iEM3155/iEM3165)
C	Communication port
D	Communications LED
E	Display for measurement and configuration
F	Cancel
G	Confirm
H	Scroll
I	Current and voltage inputs (direct measurement up to 63 A)
J	Energy pulsing LED (used to verify accuracy)
K	Status LED: on/off, error

N N’ L1 L1’ L2

L2’

L3 L3’

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Hardware and installation	iEM3100 / iEM3200 / iEM3300 series user manual

iEM3175 - Direct measurement up to 63 A and LonWorks communications

The various features of the iEM3175 are shown in the diagram below:

LON

C/- DI	Service

ON 500 /kWh

OK	ESC
Neuron ID: 000000000000	Reset
S/N:0000000000	Config

A	Digital input
B	Communication port
C	Communications / LonWorks operations LED
D	Service pin
E	Display for measurement and configuration
F	Cancel
G	Confirm
H	Scroll
I	Current and voltage inputs (direct measurement up to 63 A)
J	Neuron ID
K	Energy pulsing LED (used to verify accuracy)
L	Status LED: on/off, error

N N’ L1 L1’ L2

L2’

L3 L3’

iEM3200 / iEM3210 / iEM3215 - Measurement with CTs

The various features of the listed meters (CTs 1 A or 5 A) are shown in the diagram below:

C/-

T1

T2

S0+ S0-

ON 5000 /kWh

						OK		ESC
							Config	Reset
					(I1)	(I2)		(I3)
V1	V2	V3	Vn	S1	S2	S1	S2	S1	S2

A	Digital inputs for tariff control (iEM3215)
B	Display for measurement and configuration
C	Pulse out for remote transfer (iEM3210)
D	Current inputs (CTs 1 A or 5 A)
E	Cancel
F	Confirm
G	Scroll
H	Voltage inputs
I	Energy pulsing LED (used to verify accuracy)
J	Status LED: on/off, error

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iEM3100 / iEM3200 / iEM3300 series user manual	Hardware and installation

iEM3235 - Measurement with CTs and M-Bus communications

The various features of the iEM3235 (CTs 1 A or 5 A with M-Bus communications) are shown in the diagram below:

	M-Bus
C/- DI	C DO

ON 5000 /kWh

		OK	ESC
		Config	Reset
	(I1)	(I2)	(I3)
V1 V2 V3 Vn	S1 S2	S1 S2	S1 S2

A	Digital input
B	Digital output
C	Communication port
D	Communications LED
E	Display for measurement and configuration
F	Current inputs (CTs 1 A and 5 A)
G	Cancel
H	Confirm
I	Scroll
J	Voltage inputs
K	Energy pulsing LED (used to verify accuracy)
L	Status LED: on/off, error

iEM3250 / iEM3255 / iEM3265 - Measurement with CTs and Modbus or BACnet communications

The various features of the iEM3250 / iEM3255 / iEM3265 (CTs 1 A or 5 A with Modbus or BACnet communication) are shown in the diagram below:

	0V	D0/- D1/+
		RS485
C/- DI N.C. C DO	N.C.
	ON
5000	/kWh

		OK	ESC
		Config	Reset
	(I1)	(I2)	(I3)
V1 V2 V3 Vn	S1 S2	S1 S2	S1 S2

A	Digital input (iEM3255/iEM3265)
B	Digital output (iEM3255/iEM3265)
C	Communication port
D	Communications LED
E	Display for measurement and configuration
F	Current inputs (CTs 1 A and 5 A)
G	Cancel
H	Confirm
I	Scroll
J	Voltage inputs
K	Energy pulsing LED (used to verify accuracy)
L	Status LED: on/off, error

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Hardware and installation	iEM3100 / iEM3200 / iEM3300 series user manual

iEM3275 - Measurement with CTs and LonWorks communications

The various features of the iEM3275 (CTs 1 A or 5 A with LonWorks communications) are shown in the diagram below:

LON

C/- DI

ON 5000 /kWh

Neuron ID: 000000000000		OK	ESC
		Config	Reset
S/N: 0000000000
	(I1)	(I2)	(I3)
V1 V2 V3 Vn	S1 S2	S1 S2	S1 S2

A	Digital input
B	Communication port
C	Communications / LonWorks operation LED
D	Service pin
E	Display for measurement and configuration
F	Current inputs (CTs 1 A and 5 A)
G	Cancel
H	Confirm
I	Scroll
J	Voltage inputs
K	Neuron ID
L	Energy pulsing LED (used to verify accuracy)
M	Status LED: on/off, error

iEM3300 / iEM3310 - Direct measurement up to 125 A

The various features of the iEM3300 / iEM3310 are shown in the diagram below:

S0+ S0-

ON 200 /kWh

OK	ESC
	Reset
	Config

A	Display for measurement and configuration
B	Pulse output for remote transfer (iEM3310)
C	Cancel
D	Confirm
E	Scroll
F	Current and voltage inputs (direct measurement up to 125 A)
G	Energy pulsing LED (used to verify accuracy)
H	Status LED: on/off, error

	N			N’			L1		L1’		L2

L2’

L3 L3’

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iEM3100 / iEM3200 / iEM3300 series user manual	Hardware and installation

iEM3335 - Direct measurement up to 125 A and M-Bus communications

The various features of the iEM3335 are shown in the diagram below:

C/- DI

C DO

ON 200 /kWh

OK	ESC
	Reset
	Config

A	Digital input
B	Digital output
C	Communication port
D	Communications LED
E	Display for measurement and configuration
F	Cancel
G	Confirm
H	Scroll
I	Current and voltage inputs (direct measurement up to 125 A)
J	Energy pulsing LED (used to verify accuracy)
K	Status LED: on/off, error

		N		N’			L1		L1’		L2

L2’

L3 L3’

iEM3350 / iEM3355 / iEM3365 - Direct measurement up to 125 A and Modbus or BACnet communications

The various features of the iEM3350 / iEM3355 / iEM3365 are shown in the diagram below:

				0V	D0/- D1/+
					RS485
		C/- DI	C DO
				ON
			200	/kWh
						OK	ESC
						Config	Reset
N	N’	L1	L1’	L2	L2’	L3	L3’

A	Digital input (iEM3355 / iEM3365)
B	Digital output (iEM3355 / iEM3365)
C	Communication port
D	Communications LED
E	Display for measurement and configuration
F	Cancel
G	Confirm
H	Scroll
I	Current and voltage inputs (direct measurement up to 125 A)
J	Energy pulsing LED (used to verify accuracy)
K	Status LED: on/off, error

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Hardware and installation	iEM3100 / iEM3200 / iEM3300 series user manual

iEM3375 - Direct measurement up to 125 A and LonWorks communications

The various features of the iEM3375 are shown in the diagram below:

		C/- DI					Service
				ON
			200	/kWh
Neuron ID: 000000000000					OK		ESC
S/N:0000000000						Config	Reset
N	N’	L1	L1’	L2	L2’	L3	L3’

A	Digital input
B	Communication port
C	Communications / LonWorks operations LED
D	Service pin
E	Display for measurement and configuration
F	Cancel
G	Confirm
H	Scroll
I	Current and voltage inputs (direct measurement up to 125 A)
J	Neuron ID
K	Energy pulsing LED (used to verify accuracy)
L	Status LED: on/off, error

DIN rail mounting and dismounting

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

•Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E in the USA or applicable local standards.

•This equipment must only be installed and serviced by qualified electrical personnel.

•Turn off all power supplying this device and the equipment in which it is installed before working on the device or equipment.

•Always use a properly rated voltage sensing device to confirm power is off.

•Replace all devices, doors and covers before turning on power to this equipment.

•Do not exceed the device’s ratings for maximum limits.

Failure to follow these instructions will result in death or serious injury.

Mounting the meter on a DIN rail

1. Position the 2 upper slots on the rear of the meter onto the DIN rail.

2.Press the meter against the DIN rail until the locking mechanism engages. The meter is now attached to the rail. Make sure that the device is not tilted following installation.

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iEM3100 / iEM3200 / iEM3300 series user manual	Hardware and installation

Click!

Dismounting the meter from a DIN rail

1.Use a flat-tip screwdriver (≤ 6.5 mm / 0.25 in) to lower the locking mechanism and release the meter.

2. Lift the meter out and up to free it from the DIN rail.

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Hardware and installation	iEM3100 / iEM3200 / iEM3300 series user manual

Input, output and communications wiring

This section describes the wiring of the digital inputs, digital and pulse outputs and the communications (as applicable).

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

•Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E in the USA or applicable local standards.

•This equipment must only be installed and serviced by qualified electrical personnel.

•Turn off all power supplying this device and the equipment in which it is installed before working on the device or equipment.

•Always use a properly rated voltage sensing device to confirm power is off.

•Replace all devices, doors and covers before turning on power to this equipment.

•Do not exceed the device’s ratings for maximum limits.

Failure to follow these instructions will result in death or serious injury.

WARNING

UNINTENDED OPERATION

Do not use the meter for critical control or protection applications where human or equipment safety relies on the operation of the control circuit.

Failure to follow these instructions can result in death, serious injury or equipment damage.

Related topics

•See “Power system wiring” on page 26 for information on wiring the voltage and current connections.

Pulse output wiring: iEM3110 / iEM3210 / iEM3310

	Rin
	Radd
5 – 30 V DC
+	-
	S0+ S0-

•The pulse output is compatible with S0 format.

•The pulse output can be directly connected to a 24 V DC (< 30 V DC) input on a Zelio or Twido PLC.

•The pulse output indicates the primary consumption with consideration of transformer ratios.

•For other concentrators, if V DC/Rin > 15 mA, add a resistor Radd = (V DC/0.01) - Rin Ω

Digital input wiring: iEM3115 / iEM3215

11 – 40 V DC
- +
C/- T1	T2

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iEM3100 / iEM3200 / iEM3300 series user manual	Hardware and installation

Digital input wiring: iEM3135 / iEM3155 / iEM3165 / iEM3175 / iEM3235 / iEM3255 / iEM3265 / iEM3275 / iEM3335 / iEM3355 / iEM3365 / iEM3375

11 – 40 V DC

-	+
	C/- DI	N.C.
• The digital input and output are electrically independent.

Digital output wiring: iEM3135 / iEM3155 / iEM3165 / iEM3235 / iEM3255 / iEM3265 / iEM3335 / iEM3355 / iEM3365

5 – 40 V DC

-/+ +/-

Load

CDO N.C.

•The programmable digital output is compatible with S0 format when configured as a pulse output.

•The digital output is polarity-independent.

•The digital input and output are electrically independent.

Modbus RS-485 communications wiring: iEM3150 / iEM3155 / iEM3250 / iEM3255 / iEM3350 / iEM3355

0 V

D0 = A’ / Rx-, A / Tx-

D1 = B’ / Rx+, B / Tx+

0V D0/- D1/+

BACnet RS-485 communications wiring: iEM3165 / iEM3265 / iEM3365

0 V

D0 = A’ / Rx-, A / Tx-

D1 = B’ / Rx+, B / Tx+

0V D0/- D1/+

M-Bus communications wiring: iEM3135 / iEM3235 / iEM3335

•The M-Bus communications connection is polarity-independent.

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Hardware and installation	iEM3100 / iEM3200 / iEM3300 series user manual

LonWorks communications wiring: iEM3175 / iEM3275 / iEM3375

Service

•The LON communications connection is polarity-independent.

Power system wiring

The diagrams below illustrate how to connect the meters to a single-phase or three-phase 3-wire or 4-wire power system.

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

•Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E in the USA or applicable local standards.

•This equipment must only be installed and serviced by qualified electrical personnel.

•Turn off all power supplying this device and the equipment in which it is installed before working on the device or equipment.

•Always use a properly rated voltage sensing device to confirm power is off.

•Replace all devices, doors and covers before turning on power to this equipment.

•Do not exceed the device’s ratings for maximum limits.

Failure to follow these instructions will result in death or serious injury.

Voltage input protection

The meter’s voltage inputs must be wired to fuses/breakers and a disconnect switch. If using a voltage transformer (VT), both primary and secondary sides of the VT must be fused and switched.

•Clearly label the device’s disconnect circuit mechanism and install it within easy reach of the operator.

•Fuses / circuit breakers must be:

—installed in accordance with all local and national electrical codes and standards, and

—rated for the installation voltage, available fault current, and sized for connected loads.

•Fuse for neutral is required if the source neutral connection is not grounded.

Current input protection for 1 A and 5 A meters

For all connected current inputs on 1 A and 5 A meters with external CTs, use a CT shorting block to short-circuit the secondary leads of the CTs before removing the current input connections to the meter.

NOTE: Ground any unused current inputs on 1 A and 5 A meters.

iEM31•• and iEM33•• devices associated with a contactor

Connection requirements for iEM3100 / iEM3110 / iEM3115 / iEM3135 / iEM3150 / iEM3155 / iEM3165 / iEM3175 / iEM3300 / iEM3310 / iEM3335 / iEM3350 / iEM3355 / iEM3365 / iEM3375:

•When the meter is associated with a contactor, connect the meter upstream of the contactor.

•The meter must be protected by a circuit breaker.

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iEM3100 / iEM3200 / iEM3300 series user manual	Hardware and installation

L	L
	iEM
iEM
Load	Load

Related topics

•See “Input, output and communications wiring” on page 24 for information on wiring the digital inputs, digital or pulse outputs and communications for your device.

63 A direct measurement meter wiring

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

• Do not allow the total additive current flowing through the device to exceed 63 A.

Failure to follow these instructions will result in death or serious injury.

Fuses and disconnect switch

Power system

Wiring

N

N’

L1 L1’ L2

L2’

L3

L3’

N

N’ L1 L1’ L2

L2’

L3

L3’

1PH2W L-N

L

L

N

≤277 V L-N

N

≤277 V L-N

N

N’ L1 L1’

L2

L2’ L3

L3’

1PH2W L-L

L1

L2

≤480 V L-L

N

N’

L1 L1’ L2

L2’

L3

L3’

N

N’ L1 L1’ L2

L2’

L3

L3’

1PH3W L-L-N

L1

L1

L2

L2

N

≤277 V L-N

N

≤277 V L-N

≤480 V L-L

≤480 V L-L

N

N’ L1 L1’

L2

L2’ L3

L3’

3PH3W

L1

L2

L3

≤480 V L-L

N

N’

L1 L1’ L2

L2’

L3

L3’

N

N’ L1 L1’ L2

L2’

L3

L3’

L1

L1

3PH4W

L2

L2

L3

L3

N

≤277 V L-N

N

≤277 V L-N

≤480 V L-L

≤480 V L-L

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Hardware and installation	iEM3100 / iEM3200 / iEM3300 series user manual

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

• Do not connect N’ to the load when setting the wiring type on the meter to 1PH4W Multi L-N.

Failure to follow these instructions will result in death or serious injury.

Power system			Wiring
N	N’	L1	L1’ L2 L2’	L3	L3’
1PH multiple loads with neutral (1PH4W Multi L-N)1

1The 1PH4W Multi L-N wiring type is only available on the iEM3135, iEM3150, iEM3155, iEM3165 and iEM3175.

125 A direct measurement meter wiring

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

• Do not allow the total additive current flowing through the device to exceed 125 A.

Failure to follow these instructions will result in death or serious injury.

Fuses and disconnect switch

Power system

Wiring

N

N’

L1 L1’ L2

L2’

L3

L3’

N

N’ L1 L1’ L2

L2’

L3

L3’

1PH2W L-N

L

L

N

≤277 V L-N

N

≤277 V L-N

N

N’ L1 L1’

L2

L2’ L3

L3’

1PH2W L-L

L1

L2

≤480 V L-L

N

N’

L1 L1’ L2

L2’

L3

L3’

N

N’ L1 L1’ L2

L2’

L3

L3’

1PH3W L-L-N

L1

L1

L2

L2

N

≤277 V L-N

N

≤277 V L-N

≤480 V L-L

≤480 V L-L

N

N’ L1 L1’

L2

L2’ L3

L3’

3PH3W

L1

L2

L3

≤480 V L-L

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iEM3100 / iEM3200 / iEM3300 series user manual	Hardware and installation

Power system						Wiring
	N	N’ L1 L1’ L2	L2’	L3	L3’	N	N’ L1 L1’ L2	L2’	L3	L3’
	L1					L1
3PH4W	L2					L2
	L3					L3
	N	≤277 V L-N				N	≤277 V L-N

≤480 V L-L

≤480 V L-L

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

• Do not connect N’ to the load when setting the wiring type on the meter to 1PH4W Multi L-N.

Failure to follow these instructions will result in death or serious injury.

Power system			Wiring
N	N’	L1	L1’ L2 L2’	L3	L3’
1PH multiple loads with neutral (1PH4W Multi L-N)1

1The 1PH4W Multi L-N wiring type is only available on the iEM3335, iEM3350, iEM3355, iEM3365 and iEM3375.

5 A / 1 A meter wiring

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

•Never short the secondary of a voltage transformer (VT).

•Never open circuit a current transformer (CT); use the shorting block to short circuit the leads of the CT before removing the connection from the meter.

•Always use grounded external CTs for current inputs.

Failure to follow these instructions will result in death or serious injury.

Single-phase systems with CTs
250 mA fuses and disconnect switch
Shorting block
Power system		Wiring
	V1 V2 V3Vn	(I1)	(I2)	(I3)
1PH2W L-N
		S1	S2
		≤277 V L-N

DOCA0005EN-04

29

Hardware and installation				iEM3100 / iEM3200 / iEM3300 series user manual
Power system					Wiring
		V1 V2 V3Vn			(I1)	(I2)	(I3)
1PH2W L-L
		L1			S1	S2
		L2			≤480 V L-L
		V1 V2 V3Vn			(I1)	(I2)	(I3)
1PH3W L-L-N					S1	S2
		L1
					S1		S2
		L2
		N			≤277 V L-N
					≤480 V L-L
2CTs					3CTs
V1 V2 V3Vn	(I1)	(I2)	(I3)				V1 V2 V3Vn	(I1)	(I2)	(I3)
1PH multiple loads with neutral
(1PH4W Multi L-N)1
	≤277 V L-N							≤277 V L-N
1The 1PH4W Multi L-N wiring type is only available on the iEM3235, iEM3250, iEM3255, iEM3265 and iEM3275

Three-phase systems with CTs

250 mA fuses and disconnect switch

Shorting block

indicates wiring for a balanced system

Power system	Wiring
1 CT	2CTs	3CTs
V1 V2 V3Vn	V1 V2 V3Vn	V1 V2 V3Vn
3PH3W
≤480 V L-L	≤480 V L-L	≤480 V L-L
1 CT	2 CTs	3CTs
V1 V2 V3Vn	V1 V2 V3Vn	V1 V2 V3Vn
3PH4W
≤277 V L-N	≤277 V L-N	≤277 V L-N
30		DOCA0005EN-04