ETC ELTS2 User manual

Part Number: 1096M1210 Rev: B
Released: 2021-07
Emergency Lighting
Transfer System
Model: ELTS2
Installation and User
Operation Manual

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marked and not marked, are the property of their respective owners.
ETC intends this document, whether printed or electronic, to be provided in its entirety.

Table of Contents i
Table of Contents
Section 1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . .1
Compliance and Standards . . . . . . . . . . . . . . . . . . . . . .1
Warnings and Notice Conventions . . . . . . . . . . . . . . . .1
Contacting ETC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Type D (Discrete Feed) Overview. . . . . . . . . . . . . . . . . . . . . . . .4
Type M (Main Feed) Overview. . . . . . . . . . . . . . . . . . . . . . . . . .5
Standard Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Product Variants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Section 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . .8
Installation Requirements . . . . . . . . . . . . . . . . . . . . . . .8
Installation Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Clearance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Sense Feed Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Transfer Switch Specification. . . . . . . . . . . . . . . . . . . . . . . . . .11
Prepare for Installation . . . . . . . . . . . . . . . . . . . . . . . .11
Verify Contents of the Shipping Carton . . . . . . . . . . . . . . . . .11
Parts and Specialty Tools Required . . . . . . . . . . . . . . . . . . . . .11
Cable Specification and Conduit Access . . . . . . . . . . . . . . . . .11
Install the ELTS2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Determine the Installation Location . . . . . . . . . . . . . . . . . . . .14
Install Mounting Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Rough-In Conduit and Cable . . . . . . . . . . . . . . . . . . . . . . . . . .16
Connect Emergency Discrete Inputs for
Type D (Discrete Feed) Unit . . . . . . . . . . . . . . . . . . . . .19
Connect Emergency Discrete Input Wires to the
Terminal Strip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Connect Emergency Mains for
Type M (Main Feed) Unit . . . . . . . . . . . . . . . . . . . . . . .20
Connect Mains Feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Connect Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Connect Normal Input Wires to the Transfer Switch . . . . . . .21
Connect Load Output Wires to the Terminal Strip. . . . . . . . .22
Connect 120 VAC Sense Power Wiring . . . . . . . . . . . . . . . . . .23
Connect 240 and 277 VAC Sense Power Wiring . . . . . . . . . . .24
Connect Fire Alarm and Remote Station Wiring . . . . . . . . . .25

ii ELTS2 Installation and User Operation Manual
Power Up and Check System . . . . . . . . . . . . . . . . . . . .26
Power Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Check System Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Manual Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Automatic Operation Test . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Section 3 Operation. . . . . . . . . . . . . . . . . . . . . . . . . .29
How the ELTS2 Works . . . . . . . . . . . . . . . . . . . . . . . . .29
How the ELTS2 Determines a Power Failure. . . . . . . . . . . . . .29
How Time Delays Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Fire Alarm Contact Input Operation . . . . . . . . . . . . . . . . . . . .30
Local and Remote Control Station Operation . . . . . . . . . . . .30
Adjust the Power Transfer Delays . . . . . . . . . . . . . . . . . . . . . .31
Test the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Local and Remote Key Switch Test . . . . . . . . . . . . . . . . . . . . .32
Fire Alarm Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Manual Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Appendix A Side Mount Hardware Installation . . . . . .35
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Install the Side Mount Hardware Kit. . . . . . . . . . . . . .35

Introduction 1
Section 1
Introduction
Welcome to the Emergency Lighting Transfer System (ELTS2) Installation and User Operation Manual.
This manual contains the procedures for safe and efficient installation and user operation of the
UL 1008 listed Emergency Lighting Transfer System.
Compliance and Standards
See the ELTS2 datasheet at etcconnect.com for compliance information.
Warnings and Notice Conventions
These symbols are used throughout this document to alert you to danger or important information.
Please email comments about this manual to: [email protected]
Note:
Notes are helpful hints and information that is supplemental to the main text.
CAUTION:
A Caution statement indicates situations where there may be undefined or
unwanted consequences of an action, potential for data loss or an equipment
problem.
WARNING: A Warning statement indicates situations where damage may occur, people
may be harmed, or there are serious or dangerous consequences of an action.
WARNING: RISK OF ELECTRIC SHOCK! This warning statement indicates situations where
there is a risk of electric shock.

2ELTS2 Installation and User Operation Manual
Contacting ETC
If you are having difficulties, and your problem is not addressed by this document, try the ETC
support website at support.etcconnect.com or the main ETC website at etcconnect.com. If
none of these resources are sufficient, contact ETC Technical Services directly at one of the
offices identified below. Emergency service is available from all ETC offices outside of normal
business hours.
When calling for help, please have the following information handy:
• Product model and serial number
• A reference list of other components in your system
ETC, Inc.
Americas
Technical Services Department
3031 Pleasant View Road
Middleton, WI 53562
800-775-4382 (USA, toll-free)
[phone]
[email protected]
ETC GmbH
Germany, Austria, Switzerland, Eastern
Europe, and Russia
Technical Services Department
Ohmstrasse 3
83607 Holzkirchen, Germany
[phone]
[e-mail]
ETC Austin
High End Systems Products
Technical Services Department
2105 Gracy Farms Lane
Austin, TX 78758 USA
800-890-8989 (USA, toll-free)
[phone]
[email protected]
ETC France
France
Zone Urbaparc -
Bâtiment E
6 Boulevard de la Libération
Saint-Denis, 93200
[phone]
[email protected]
ETC Ltd
Europe, Middle East, and Africa
Technical Services Department
26-28 Victoria Industrial Estate
Victoria Road,
London W3 6UU England
[phone]
[email protected]
ETC Asia
Asia
Technical Services Department
Room 1801, 18/F
Tower 1, Phase 1 Enterprise Square
9 Sheung Yuet Road
Kowloon Bay, Kowloon, Hong Kong
[phone]
[email protected]

Introduction 3
Product Overview
The ETC Emergency Lighting Transfer System (ELTS2) is a UL 1008 Listed emergency load transfer
switch designed to switch lighting loads from one power source to another when there is a power
failure or other emergency situation present.
When a normal power failure is detected the ELTS2 automatically transfers the load (both hot and
neutral conductors) of the associated output to a separate emergency power source. When normal
power is restored the ELTS2 reconnects the load to normal power. The local control panel includes a
test key switch and LED indicators that clearly display the system status.
The ELTS2 is available in two panel sizes as standard:
• Small enclosure for two to twelve 20 A circuits of emergency AC lighting loads
• Large enclosure for two to twenty-four 20 A circuits of emergency AC lighting loads
The ELTS2 is available with optional discrete (Type D) emergency branch circuit feeds from an external
circuit breaker panel (by others) or emergency main feed (Type M) with built-in branch circuit
distribution.
Each transfer switch includes a pair of contactors, one for two 20 A circuits of
normal power and one for two 20 A circuits of emergency power. The two
contactors in the assembly are connected by a mechanical interlock in a manner
that ensures the circuits break from normal power before making the transfer
to emergency power and vice versa.
As shown: ELTS2-1-D-277-24
Large NEMA 1 cabinet with 24 Discrete
emergency circuits
As shown: ELTS2-1-M-3P-12
Small NEMA 1 cabinet with Main feed and
12 emergency circuits
(Illustrations shown without internal wiring for clarity.)

4ELTS2 Installation and User Operation Manual
Type D (Discrete Feed) Overview
With Type D ELTS2 units, each 20 A emergency circuit (hot and neutral conductors) are independently
fed from an adjacent emergency branch circuit breaker panel (by others). Normal 20 A circuits are fed
from an adjacent dimmer rack or branch circuit panel. Normal sense power wiring must be run from an
external 10–20 A circuit breaker.
Note:
The sense feed power consumption is essentially none.
ELTS2
TYPE D - DISCRETE FEED
NEMA 1 ENCLOSURE
HOUSELIGHTS
NORMAL EMERGENCY
AUTO
HOUSELIGHTS
NORMAL EMERGENCY
AUTO
HOUSELIGHTS
NORMAL EMERGENCY
AUTO
REMOTE
STATIONS
HOUSELIGHTS
NORMAL EMERGENCY
AUTO
FIRE ALARM
(5) 16 AWG
24 V CLASS 2
(2) 16 AWG
CLASS 2
(DRY CONTACT INPUT)
HOUSELIGHTS
NORMAL EMERGENCY
AUTO
NORMAL SENSE
1 OR 3Ø & N
VIA 10–20 A
CIRCUIT BREAKER
(BY OTHERS)
NORMAL POWER
SOURCE
SENSE FEED
(BY OTHERS)
NORMAL (ONLY) LIGHTING LOADS NORMAL/EMERGENCY LIGHTING LOADS
DIMMER/RELAY OUTPUT TO NORMAL/EMERGENCY LIGHTING LOADS
EMERGENCY POWER
SOURCE
(GENERATOR, INVERTER OR
SECOND UTILITY)
EMERGENCY LIGHTING
CIRCUIT FEEDS
EMERGENCY
BRANCH
CIRCUIT PANEL
(BY OTHERS)
FIRE ALARM
NORMAL MODE EMERGENCY MODE
AUTO
NORMAL
POWER
EMERGENCY
POWER
recent
and
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thru
help
0
Fault-
Fault+
Power
Link
Power
Aux
Error
DMXA
Power
DMXB
Ethernet
1
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DIMMER
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BREAKER
PANEL

Introduction 5
Type M (Main Feed) Overview
With Type M ELTS2 units, emergency mains are connected to phase lugs within the unit. Mains power
is distributed through factory wiring to built-in branch circuit distribution and overcurrent protection.
Normal 20 A circuits are fed from an adjacent dimmer rack or branch circuit panel. Normal sense
power wiring must be run from an external 10–20 A circuit breaker.
NORMAL SENSE
1 OR 3Ø & N
VIA 10–20 A
CIRCUIT BREAKER
(BY OTHERS)
NORMAL POWER
SOURCE
EMERGENCY POWER
SOURCE
GENERATOR, INVERTER,
OR SECOND UTILITY
NORMAL (ONLY) LIGHTING LOADS
SENSE FEED
(BY OTHERS)
DIMMER/RELAY OUTPUT TO NORMAL/
EMERGENCY LIGHTING LOADS
NORMAL/EMERGENCY LIGHTING LOADS
HOUSELIGHTS
NORMAL EMERGENCY
AUTO
HOUSELIGHTS
NORMAL EMERGENCY
AUTO
HOUSELIGHTS
NORMAL EMERGENCY
AUTO
REMOTE
STATIONS
HOUSELIGHTS
NORMAL EMERGENCY
AUTO
FIRE ALARM
(5) 16 AWG
24 V CLASS 2
(2) 16 AWG
CLASS 2
(DRY CONTACT INPUT)
HOUSELIGHTS
NORMAL EMERGENCY
AUTO
NORMAL
POWER
AUTO EMERGENCY
POWER
NORMAL MODE
FIRE ALARM
EMERGENCY MODE
! WARNING!
Toreduce the risk of electric
shockor injury to persons,
disconnectall sources of
supplybefore servicing.
ELTS2
TYPE M - MAIN FEED
NEMA 4 ENCLOSURE
recent
and
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thru
help
0
Fault-
Fault+
Power
Link
Power
Aux
Error
DMXA
Power
DMXB
Ethernet
1
2
abc
3
def
4
ghi
5
jkl
6
mno
7
pqrs
8
tuv
9
wxyz
DIMMER
RACK
OR
CIRCUIT
BREAKER
PANEL

6ELTS2 Installation and User Operation Manual
Standard Features
• The ELTS2 has a highly visible integrated local control station with a three-position test key switch
(Auto, Normal Power, and Emergency Power) for system test. The local station also includes a full
complement of system status indicators including:
• The ELTS2 enclosure provides ample space for contractor wiring.
- Standard NEMA 1 rated enclosure is 14 gauge welded steel enclosure with a hinged locking
door.
- Optional NEMA 4 rated enclosure is watertight and includes a hinged locking door.
• 240 and 277 VAC units are provided with integral transformers to step down normal phase A and
emergency phase A feeds to 120 V for the control electronics.
• ELTS2 units are provided with 20 A fuses for branch circuit protection.
• Dual inline pin (DIP) switches on the control electronics are provided for user-selectable timing
delays for power transfer between:
- the loss of normal power and the transfer to emergency power
- the restoration of normal power and the transfer from emergency power back to normal
power
• A normally closed dry contact closure is provided for Fire Alarm input.
• Up to five remote stations may be used per ELTS2 system. Remote stations include a key switch
for switching between normal and emergency states. Each station also includes two LEDs
illuminating the active ELTS2 state: Normal Mode or Emergency Mode.
• After normal power is restored the transfer switches return to the state previous to the power
loss.
• A transfer switch consists of a pair of contactors: One for normal inputs and one for emergency
inputs.
- Each contactor provides connection for line and neutral of two 20 A circuits on the input side.
- The two contactors in the assembly are connected by a mechanical interlock, which ensures
the circuits break from normal power before making the transfer to emergency power.
- Transfer Switches are rated for any mix of loads including tungsten, fluorescent, and discharge
lamps (in general terms, for resistive, capacitive, and inductive loads).
- Transfer Switches are rated for 6,000 cycles at full tungsten load.
F IRE A LARM
N ORMAL M ODE
E MERGENCY M ODE
N ORMAL
P OWER
E MERGENCY
P OWER
A UTO
• Normal Mode: Green LED
• Emergency Mode: Red LED
• Fire Alarm: Red LED