CEPS-850
Central Emergency Power System
Battery Pack Eliminator & Generator Backup
Emergency tubes operate at full 2800 lumen output during power failure
Simple, self-contained 850W inverter safely & silently
replaces up to 25 emergency fluorescent battery packs.
Standard Battery Packs provide only 600-1000 lumen per tube.
Compatible with all fluorescent ballasts, incandescents, CFL’s, halogens, and LED loads
Automatic Transfer Output: When utility power is present, emergency lights are powered by
utility power through contact A. When utility power fails, emergency lights are powered by
inverter/battery derived power through contact B.
Patented Automatic Diagnostics: EPC-A-1 includes a patented automatic test feature which
keeps emergency lighting load on for 2.5 seconds when room switch is turned off, proving that
emergency power source, ballast tubes are operating properly. Eliminates costly, time consuming
monthly testing of individual emergency lights, complies with NFPA101, NEC and UL 924.
Individual Control: Control up to 25 emergency lighting zones from a single CEPS-850 using up
to 25 EPC-A-1 controls. Designated emergency light fixtures can then be used as regular light
fixtures, which are turned on and off by the same room switch or control.
Simple, Easy Installation: Typical installation time: one person, four hours. No startup fee or
maintenance contract required.
The CEPS-850 Inverter System consists of a surface-mounted panel, relay control logic, rechargeable batteries,
power supply, and a modular inverter, which converts DC battery power to pure sine-wave AC power.
EN
C Y CI
CHARGER
U I TS
TEST
RC
EM E RG
Utility Supervision
Buzzer
UTILITY
INVERTER
120VAC
UTILITY
POWER
INPUT
10A
ISO9001
CHARGER
120VAC or 277VAC
EMERGENCY
OUTPUT
A
B
ISO9001
BATTERIES
Charger
LED (RED)
Utility Power
Supervision & Test
Note:
Utility Power
1000W inverter
LED (GREEN)
capacity and 1500W inrush
overload. System rated at 850W for
increased reliability and 25 year life expectancy.
Quick
Disconnect
ISO9001
INVERTER
10A
Inverter
LED (BLUE)
UL
®
UL924 LISTED
EMERGENCY LIGHTING
EQUIPMENT
73PK
CEPS-850 Theory of Operation
During normal times, when utility power is available, voltage and current are supplied through contact A
to the inverter power line, which supplies the emergency light fixtures. During a general power failure, the
CEPS-850 automatically transfers to stand-by batteries in the panel, which provide DC power to an
inverter, which in turn supplies AC voltage and current through contact B to the inverter power line.
The inverter power line runs throughout the building and feeds emergency lighting in any area which
experiences a utility power branch circuit interruption. Locally mounted EPC-A-1 power controls allow a
room switch or other controls to simultaneously turn regular and emergency light fixtures on and off.
Inverter Powerline Diagram
CEPS-850
B
A
Inverter
To Regular
Utility Power
Feed
JB
EPC-A-1
EPC-A-1
JB
JB
JB
Room Switch
or Control
Room Switch
or Control
Battery
EPC-A-1
EPC-A-1
To
Utility Power
Source
To
Utility Power
Source
EPC-A-1 Dual Voltage Control Module
size is approximately 2.5”X1.5”X1.5”
installed inside 4-11/16” Junction Box
with all wiring connections.
Room Switch
or Control
To
Utility Power
Source
Designated Emergency
Light Fixtures
Regular
Light Fixtures
Up to 25
F32T8 tubes
EPC-A-1
or 850W can
JB
be connected
to 1 LVS
inverter
Room Switch
or Control
To
Utility Power
Source
For dimming
controls, replace
EPC-A-1 with
EPC-D-F or other
2 Conductors + Ground
3 Conductors + Ground
For complete controls theory of operation and wiring diagrams,
please see www.lvscontrols.com #1 - #11
UL924 Listed - Meets or exceeds all NEC, NFPA101, and
UL emergency lighting requirements
All emergency lighting supplied from one convenient
power source.
Pure sine wave output, 120V or 277V output available
(GFCI Standard on 120V output)
Operates incandescent, LED, fluorescent, halogen,
induction, & CFL loads with switched & dimmed controls.
Low battery voltage disconnect
Features
Electronic & fused overload, reverse polarity, short,
over-temperature protection
Custom engineered metal cabinet 24”X24”X7”
Light Beige Color, Epoxy Painted
Momentary test switch for simulating utility power failure.
Sealed Lead Calcium Batteries by ISO9001 Manufacturer
Audible alert supervises input power, to ensure CEPS850 is never left uncharged. Visible LED indicators
supervise input, output, and charging circuits.
Modular Construction - All components field-replacable
Designed for 25 year trouble-free operation
Stock item, ready to ship nationwide
3 year warranty on components
6 year pro-rata warranty on batteries
Easy Installation - One-man installation, 4 hours typical
LVS, Inc. 2555 Nicholson Street, San Leandro, CA 94577-4216
Phone: 510-352-9600
1-800-982-4587 Fax: 510-352-6707
www.lvscontrols.com
How to Control Individual Emergency Lights
with Model EPC-A-1
On the left side of the wiring diagram below, notice that the emergency light is always powered by the
CEPS-850 power source but is controlled by a room switch fed with regular power. Following the wiring shown,
# 1 and # 4 Regular Hot and Neutral are connected to a room light circuit or panel. Please notice #1 and #4 are
to sense regular utility power and when this power is present the Green LED is on. When regular power is interrupted R-1 relay coil (inside the EPC-A-1) is de-energized, and R-1 contact (inside EPC-A-1) closes.
When R-1 contact closes, emergency hot power will flow from # 5 to # 6 Emergency Switch Leg, which will turn
on the emergency lights. The above emergency current flow is in accordance with UL924 Safety Rules and
Requirements, which state emergency light must come on automatically when regular power is interrupted
regardless if room switch position is on or off.
To turn this emergency light on and off, a room switch is connected to adjacent light circuit line hot, as shown.
When switch is closed, terminal # 3 becomes hot and energizes R-2 relay coil (inside unit). When coil is energized
R-2 relay contact (inside unit) opens and R-1 relay coil is de-energized, which closes R-1 relay contact. Current
will flow from emergency hot #5 to #6 and emergency light will be on.
EPC-A-1 has a patented automatic diagnostic test feature which keeps the emergency light load on for 2.5
seconds when the room switch is turned off, proving that emergency power, ballast and tubes are operating properly. This eliminates costly & time consuming monthly testing of individual emergency lights and complies with
NFPA101, NEC and UL 924 requirements.
Typical EPC-A-1 Wiring Diagram with CEPS-850 Inverter System
EPC-A-1
CEPS-850
5
Emergency Hot
A
B
Emergency
Neutral
Emergency
Light
6
R-1 R-1
R-2
Inverter
Battery
Green
LED
R-2
20A Utility
Power
Source
1 120V Regular Hot
277V
2
3
Room Switch or
other control
Occupancy
Sensor Contact
or Photocell
(optional)
Regular Light
4
Regular Utility
Power Feed
Regular Neutral
For clarity not all internal components are shown.
How to select an inverter & its controls
1. Calculate the expected emergency load and multiply by 1.5 for future expansion or to allow use of some 2 lamp
fixtures instead of single lamp fixtures for brighter emergency light levels in hallways.
2. Check if components such as inverter, charger, and batteries are manufactured by an ISO9001 certified source.
3. Review overload, surge capabilties and MTBF (Mean Time Between Failures).
4. Inverter and controls should be designed to allow switching regular & emergency lights ON & OFF from the same
switches, time clocks, digital controls, photocells, and occupancy sensors, in at least 20 areas.
5. Controls should be designed with an automatic diagnostic feature which eliminates monthly testing of individual
emergency light fixtures.
6. System should be of modular construction, with field-replaceable parts, and no components weighing over 50 lbs.
LVS, Inc. 2555 Nicholson Street, San Leandro, CA 94577-4216
Phone: 510-352-9600
1-800-982-4587 Fax: 510-352-6707
www.lvscontrols.com
Emergency Lighting Cost Comparison
The major costs associated with emergency fluorescent
battery packs are Monthly Testing & Replacements.
FACT: NFPA101 requires monthly testing of emergency lighting units. Additionally, a 90
minute annual test is required. In total, 11 monthly tests and 1 annual test are required.
FACT: Periodically throughout a building’s 25 year lifecycle, batteries must be replaced due
to aging. This process occurs every 6 years. Battery pack replacement involves exchanging
the entire unit, a costly, wasteful and time consuming procedure.
Typical replacement cost: $150 per battery pack.
Battery Packs:
A Wasteful Cycle
Light Levels: Single fixture ghost light,
typical: 600-1400 lumen per tube
Testing: Monthly manual testing of each fixture
required, using a ladder or infrared test system.
Maintenance: Every 6 years
entire fluorescent battery pack
must be replaced...
Fixtures must be serviced at
night (over-time) in order to
avoid occupant disruption.
Throw everything away and buy
a new pack again and again ...
Every six years :
Again & Again...
CEPS-850: A Green,
Justifiable Investment
Light Levels: Silently & safely replaces up to 25
emergency fluorescent battery packs, 850W of
emergency light at full lumen output
(2800 lumen per tube)
Testing: The CEPS-850 uses the EPC-A-1’s
patented automatic diagnostic to eliminate monthly
required testing on emergency light fixtures.
Maintenance: When needed,
batteries can be replaced by
maintenance department.
Servicing is quick and easy
and can be done during the
day-time, from a central
location, without replacing
anything else.
Typical Applications for CEPS-850
Schools | Hotels/Motels | Offices | Theatres | Stores
Court Houses | Clinics | Houses of Worship | Rest Homes
Generator Backup for hallways & other egress lighting
UL
®
UL924 LISTED
EMERGENCY LIGHTING
EQUIPMENT
73PK