Download CONTROLLED POWER COMPANY

4kW Emergency Lighting Inverter
EL-M Series
ELM_guide_spec
17 Oct 05
Part I of IX
1.0
General
This specification describes the features and design of an emergency lighting inverter system which is
single phase, continuous duty, and features a seamless transfer inverter. The system shall be designed to supply
reliable, isolated, clean, regulated emergency power for emergency lighting and associated controls. A ferroresonant transformer, microprocessor controlled solid state PWM inverter and long lasting battery pack must
provide immunity to all line disturbances and power interruptions with no break in AC output power. Power factor
correction and harmonic attenuation shall be provided.
A synchronous inverter must produce a true uninterrupted output in any mode of operation. A self-diagnostic
monitoring alarm system shall continuously advise system status.
1.1
Standards
The systems shall be designed in accordance with:
American National Standards Institute (ANSI C57.110)
Institute of Electrical and Electronic Engineers (IEEE 519-1992 and IEEE C62.41-1991)
National Electric Code (NEC)
National Fire Protection Association (NFPA Article 70)
Underwriters Laboratories (U/L) 924, 1449, 1778
FCC Article 15, Section J, Class A
1.1.1
1.2
Listings
The system shall be listed to U/L standards UL924 and UL1778.
Submittals
1.2.1
The manufacturer shall supply documentation for the installation of the system, including wiring
diagrams and cabinet outlines showing dimensions, weights, BTUs, input/output connection
locations and required clearances. Product certificates, signed by the manufacturer of the system,
certifying that the product furnished complies with the requirement shall be provided.
1.2.2
The manufacturer shall provide ISO9001 “Quality Assurance Articles” certification documents.
1.2.3
The supplier shall be a US based manufacturer of Emergency Lighting Inverter Systems with 5
years experience or greater in design and fabrication of Emergency Lighting Inverter Systems.
1.2.4
Factory test results shall be provided to show compliance with the requirements.
Part II
2.0
Manufacturers
2.1.1
The equipment specified shall be the EL Series emergency lighting inverter system, manufactured
by Controlled Power Company, or those manufactures that can clearly justify compliance to all the
requirements. Exceptions will be classified as non-compliant and subject to a no bid status.
2.2
Manufactured Units
2.2.1
The system shall include an output ferroresonant transformer, microprocessor controlled PWM
inverter, highly filtered current and voltage limited precision battery charger, membrane diagnostic
display, output power distribution, pre-wired & pre-tested batteries in a matching enclosure and an
external wall mounted make before break maintenance bypass switch. The inverter and battery
cabinets shall be provided on lockable casters. The battery cabinet shall be designed to plug into
the inverter cabinet via a factory provided DC connector.
2.2.2
Automatic system operating functions shall include:
A. Normal Operation: The load shall be supplied with voltage regulated & isolated power derived
from the ferroresonant transformer. When utility AC power is present, the battery charger shall
maintain a ripple free float charge on the batteries.
B. Emergency Operation: Upon the failure or unacceptable deviation of commercial AC power,
battery power shall be converted by the PWM inverter and filtered through the on-line
ferroresonant transformer. There shall be no break or interruption of power to the load upon
failure or restoration of the commercial AC power. Any transfer time resulting in a break in
power is unacceptable.
C. Automatic Restart: In the case of a commercial power outage that exceeds the 90 minute
battery run time required, the output of the inverter shall shut off, but automatically restart once
commercial AC power returns. Recharging of the batteries shall then commence immediately.
D. Automatic Switched Output Power Bus: A section of the output emergency power is
maintained in the off condition. Upon a loss and restoration of input power, this section will
automatically activate and de-activate. (optional)
E. Timed Automatic Switched Output Power Bus: A section of the output emergency power is
maintained in the off condition. Upon a loss of input power, this section will activate when the
programmable pre-set delay-on timer times out. Following restoration of input power, the
programmable delay-off timer will maintain the output emergency power active until the offtimer times out. (optional)
2.3
2.4
Maintenance Bypass/Isolation Switch
2.3.1
The system shall include an external, wrap around, wall mounted, make-before-break maintenance
bypass switch.
2.3.2
The maintenance bypass switch shall provide complete isolation of the inverter output terminals
from the lighting circuits.
2.3.3
When the lighting circuits are supplied from the utility through the maintenance bypass switch, the
AC input terminals of the inverter system shall remain energized to permit lighting inverter
operational testing, while the lighting inverter output terminals remain isolated from the load.
Internal Bypass Switch (Optional)
2.4.1
If the input AC nominal voltage is different from the specified AC nominal output voltage, then an
internal make before break bypass switch shall be provided. The specified voltage transformation
must be maintained through the internal ferroresonant transformer.
Part III
3.0
Performance Specifications
3.1
The system shall operate continuously at full output without derating while subjected to ambient
temperatures of 0ºC to 40ºC.
3.1.1
The system shall emit a maximum of 50dB to 55dB acoustical
noise measured at 1 meter.
3.1.2
The system shall be capable of continuous full load operation at the specified Kwatt, with a self
correcting power factor greater than 0.95 (approaching unity).
3.1.3
Input Voltage Range:
The unit shall operate from 1, 60Hertz power, 2 wire plus ground. The system shall accept
Standard nominal voltages of (208 or 240) or (277)vac, as specified.
3.1.3.1 Output Voltage Range:
The unit shall deliver 1, 60Hertz power. The system output shall provide
Standard nominal voltages of (120, 120/277, 120/240) vac, as specified.
3.1.4
The inverter shall produce 4kW Kwatts with a nominal output voltage.
3.1.5
Operating Frequency:
The unit shall operate from a 60 Hertz, + 2.5Hz AC source.
3.16
The output frequency shall be 60Hz, plus or minus 0.2 Hz under full range load while in the
battery operation mode.
3.2
The unit shall operate, without battery usage, from an input range of +10% to -15% from
nominal.
3.2.1
Voltage Regulation:
The voltage regulation of the inverter shall be ± 3% from output nominal.
3.2.2
Overload Rating:
The system shall provide for an overload of 125% for ten (10) minutes.
3.2.3
Efficiency at rated load shall be 90%.
3.3.
Output Harmonic Distortion:
The output shall be maximum 3% THD for any single harmonic. Reflected, load generated
harmonics shall be attenuated to 23dB at the system input. The system shall be capable of nonlinear loads with a crest factors of 3:1.
3.3.1
Input Current Distortion:
The input current distortion shall be below 5% THD.
3.4.
Voltage Spikes and Electrical Noise:
The system shall have 3000:1 spike (noise) attenuation and will exceed ANSI/IEEE C62.41
requirement for a category B3 wave.
3.41
3.42
Common Mode Noise Attenuation: 120dB (L-G)
Transverse Mode Noise Attenuation: 70dB (L-L) (3dB @ 1KHz; -20dB per decade)
3.5
The system shall be capable of withstanding a 150% surge without the need of switching to a
static bypass.
3.6
The system shall contain an integral, K-30 rated ferroresonant isolation transformer.
Part IV
4.0
Charging / Discharging Circuit
4.1
The system shall incorporate sealed, maintenance free, gas recombinant, self venting, suspended
electrolyte batteries, with no gel contaminant. The batteries shall be pre-packaged and pre-tested,
provided in a separate enclosure designed to plug into the inverter via a DC connector. Backup
time will be a minimum of 90 minutes per U/L 924.
4.2
The capacity of the internal charger shall be adequate to recharge fully discharged batteries to 90%
+ capacity in 24 hours. External battery chargers will not be accepted.
4.3
The battery charger shall be a two (2) stage, temperature compensated type. The charger shall be
sized and matched to the inverter system.
4.4
The internal battery charger shall be highly filtered, current limited and voltage regulated and
sustain a float charge on the batteries continuously affording maximum battery life. Charging
current shall not exceed the battery manufacture's specifications of 25% of the amp hour rating.
4.5
The battery charger shall maintain the float voltage to 2.27 VPC, with a final voltage of 1.75 VPC.
The manufacturer will factory test and provide test results with inverter system.
4.6
(Reserved)
Part V
5.0
Output Distribution
5.1
The inverter shall include input and output terminals for hardwired connections. The terminals
shall have easy access. The manufacturer will provide the recommended input and output conduit
knockouts.
5.2
(Optional) Output branch normally ON, Normally OFF and Timed Normally OFF circuit breakers
shall be flush mounted on the rear of the enclosure. Load connections shall be made at the breaker,
neutral bus and ground bus as indicated on manufacturer’s drawings.
Part VI
6.0
Reliability
6.1
The transformer shall have a reliability of 200,000 hours MTBF and the total system shall have a
reliability 100,000 hours MTBF.
Part VII
7.0
Display Monitor and Diagnostics
7.1
DISPLAY
7.1.1 Digital, 3 digit, bright LED providing system parameters:
Input Voltage
Output Voltage
Percent of Load
Percent of Battery Capacity
Percent of Battery Charger
7.1.2 LED indicators providing system status:
System On (Green)
Low Battery Warning (Red)
System On Battery (Yellow)
7.1.3 Alarms (Red)
Low output
Overload
Over temperature
Low battery shutdown
Output shutdown
Low battery
High output
Frequency fault
Shorted SCR shutdown
Check battery
Inverter on
Remote/emergency power off shutdown
7.1.4 Audible Alarm
Switch selectable
7.2 COMMUNICATIONS INTERFACE
7.2.1 Status and alarm port. Used for network protection and unattended, automatic
shutdown for all LAN/WAN systems such as Novell, LAN Manager, OS/2 and
others including UNIX and ZENIX operating systems.
7.2.2 Full duplex ASCII, RS/232 Serial Port. This port provides over 60 operating,
diagnostic and performance characteristics.
7.3
PROTECTION
The system shall be capable of being shutdown by the following:
Battery Discharged
Automatic Shutdown Software
Manual Restart Required
Remote/Emergency Power Off
Overtemp
Manual Restart Push Button
Part VIII
8.0
Salient Characteristics
8.1
Cabinet construction for inverter and battery:
The cabinet shall be constructed from formed and welded 14-gauge steel. The surface shall be pretreated prior to painting. The finish shall be baked enamel.
8.2
Inverter cabinets shall be: 22 inches wide, 32 inches deep, 44 inches tall for 5KW to 8KW units.
Inverter cabinets shall be: 33 inches wide, 36 inches deep, 52 inches tall for 10KW to 18KW units.
8.2
Battery cabinets shall be: 22 inches wide, 33 inches deep, 44 inches tall for 5kW and 5.4kW units.
Battery cabinets shall be: 33 inches wide, 40 inches deep, 52 inches tall for 6kW to 18kW units.
There shall be two (2) external battery cabinets required for 16kW and 18kW sizes.
Part IX
9.0
WARRANTY
9.1
The manufacturer shall guarantee all systems to be free from material defects and workmanship for
a period of 1 year following shipment from the factory. During the 1 year period, a factory trained
and authorized service engineer will perform an annual preventative maintenance inspection to
include a full 90 minute battery run test and document the test to comply with NFPA 101 and
applicable annual code requirements.
9.2
Battery warranty shall be 15 years; prorated.