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S4 DC TO AC INVERTER
3.5 KVA TO 21 KVA
N + 1 INVERTER
NEBS Certified Telecom Grade Power Protection
PDI’s inverters are the industry standard for telecom and critical environment power protection. At the heart of the S4 are scalable 3.5 kVA inverter power modules which can be
stacked in a N+1 redundant configuration up to 21 kVA. This modular scalability makes
the S4 ideal for overlay applications where future power growth is anticipated. All modules are packaged into a receiver cabinet allowing rapid and safe exchange of any component without interruption to the critical load.
Features That Make a Difference
Features
Redundant Controller Modules: If the primary
controller module is ever compromised the secondary module continues to provide uninterrupted
performance.
• Constructed to NEBS /Telecom industry
standards*
Digital Calibration & Self Diagnostics: All calibration is electronically regulated ensuring precise
power regulation over the lifetime of the S4.
• True Modular Scalability: 3.5 kVA-21 kVA
(3.5 kVA modules) – add modules as your
system grows
• Parallel for N+1 redundancy or capacity
• Proven reliability: no single points of failure including redundant controller module
Redundant 3.5 kVA Inverter Modules: Permits
power modules to be quickly replaced while keeping the load on inverter power.
• Full front accessibility
Front replaceable fan assemblies: Allows fans to
be swapped easily by technicians without system
downtime.
• Telcom grade filtering / clean DC input
< 30 dBrnc/no ripple current
Integrated Electronic Static Transfer Switch:
Provides six sigma reliability by adding a third
layer of protection by seamlessly transferring to a
bypass source power if required.
• Low profile: 21 kVA in 24U with static
switch
• Precision output voltage regulation
(< 2% THD)
• Integrated static bypass for added reliability
• Robust 300% overload capability
• LCD status display module
Rack mount receiver cabinet with rapid change
connector system: Swap components on-line safely
and quickly without wiring connections using the
integrated plug connections.
• Available as a complete power system
with AC distribution and maintenance
bypass integrated into a telecom rack
*NEBS certification on single phase output models
only
• International agency certifications (UL,
CE, TUV)
• Universal voltage and frequencies
TECHNICAL SPECIFICATIONS
Electrical Characteristics
Input voltage
Output voltage
Output waveform
Frequency
Inverter technology
Voltage regulation
Efficiency
Overload capacity
Transient response
Operating modes
EMI emission
Total Harmonic Distortion
Output power factor
DC noise feedback
Calibration
Transfer time (with static switch)
Over-current protection
Remote alarm indication
Display
-40 to -60 VDC (-48 VDC nominal)
100/110/115/120/200/208/210/220/240 VAC (selectable)
High Resolution True Sine Wave
50/60 Hz (selectable) ±0.02% maximum
Pulse Width Modulation / IGBT inverter
< ±0.9%
> 88% typical (on-line mode), 97% (standby mode)
up to 110% continuous / 300 % for 4 cycles
<4% voltage change on instantaneous 0 to 100% load changes
On-line (standard); Standby (selectable)
< 30 dBrnc
<1% for linear loads /<3% for non-linear loads with crest factor of 3:1
0.6 to 0.9 lagging or leading
< 30 dBrnc
Digitally controlled automatic self calibration
< 3 msec
Integrated DC breaker with front access
Form C dry contact relay card (optional) / serial port (RS232) / RTU Modbus (optional)
2 x 20 LCD display with LED status bar
Environmental Characteristics
Operating temperature
Storage temperature
Operating altitude
Audible noise
-10° C to + 55° C
-40° C to + 75° C
up to 10,000 feet above sea level without derating
Less than 50 dBA per Type 2, IEC and ANSI SI.4
Agency Certifications
Listings
UL /CSA 60950, EN60950, CE, TUV, FCC Class A
Model Description - Inverter Modules Only
System
Capacity
(kVA)
7
14
21
Inverter
Capacity
Quantity
of
Inverters
Power
(kVA/KW)
DC Input
(Max. A)
Out. Amps
@ 115 VAC
System
Weight
(app.)
Heat
Rejection
(Max. BTUs)
DC Breaker
(A suggested)
AC Input CB
(A suggested
@ 115 VAC)
Height
17.0”W x
18.0”D
3.5 kVA
1
3.5/3.0
88
26
114 lbs.
1807
125
30
21.0”
7.0 kVA
2
7.0/6.0
176
52
182 lbs.
3614
250
60
21.0”
10.5 kVA
3
10.5/9.0
265
78
241 lbs.
5421
375
100
31.5”
14.0 kVA
4
14.0/12.0
353
104
299 lbs.
7227
500
125
31.5”
17.5 kVA
5
17.5/15.0
441
130
357 lbs.
9034
650
150
42.0”
21.0 kVA
6
21.0/18.0
529
157
418 lbs.
10841
750
200
42.0”
Options
•
•
•
•
23” Open Frame Relay Rack
Rack Mount AC Distribution Panel w/ Alarm Indication (20 pole / 10 pole w/ indication)
Rack Mounting Kits (19”, 23”, 25” and 26” versions) Circuit Breakers for AC Distribution (5,10,15,20,30,40,60 Amps, Single Phase)
•
•
•
•
Rack Mount Maintenance Bypass Module
Alarm relay card
Redundant Controller Card
RTU Modbus Communications
Power Distribution, Inc. | 4200 Oakleys Court | Richmond, VA 23223
800.225.4838 | 804.737.1703 fax | web site: www.pdicorp.com
©2013 PDI