NEBS Certified Telecom Grade Power Protection

PDI’s inverters are the industry standard for telecom and critical environment power pro-

tection. 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 mod-

ules are packaged into a receiver cabinet allowing rapid and safe exchange of any compo-

nent without interruption to the critical load.

S4 DC TO AC INVERTER

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3.5 KVA TO 21 KVAN + 1 INVERTER

Features That Make a Difference Redundant Controller Modules: If the primary

controller module is ever compromised the second-

ary module continues to provide uninterrupted

performance.

Digital Calibration & Self Diagnostics: All calibra-

tion is electronically regulated ensuring precise

power regulation over the lifetime of the S4.

Redundant 3.5 kVA Inverter Modules: Permits

power modules to be quickly replaced while keep-

ing the load on inverter power.

Front replaceable fan assemblies: Allows fans to

be swapped easily by technicians without system

downtime.

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.

Rack mount receiver cabinet with rapid change

connector system: Swap components on-line safely

and quickly without wiring connections using the

integrated plug connections.

*NEBS certification on single phase output models

only

Features • Constructed to NEBS /Telecom industry standards*

• 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 fail-ure including redundant controller module

• Full front accessibility

• Low profile: 21 kVA in 24U with static switch

• Telcom grade filtering / clean DC input < 30 dBrnc/no ripple current

• Precision output voltage regulation (< 2% THD)

• Integrated static bypass for added reli-ability

• Robust 300% overload capability

• LCD status display module

• Available as a complete power system with AC distribution and maintenance bypass integrated into a telecom rack

• Universal voltage and frequencies

• International agency certifications (UL, CE, TUV)

TECHNICAL SPECIFICATIONS

Power Distribution, Inc. | 4200 Oakleys Court | Richmond, VA 23223

800.225.4838 | 804.737.1703 fax | web site: www.pdicorp.com

©2013 PDI

Electrical Characteristics Input voltage -40 to -60 VDC (-48 VDC nominal)Output voltage 100/110/115/120/200/208/210/220/240 VAC (selectable)Output waveform High Resolution True Sine WaveFrequency 50/60 Hz (selectable) ±0.02% maximumInverter technology Pulse Width Modulation / IGBT inverterVoltage regulation < ±0.9%Efficiency > 88% typical (on-line mode), 97% (standby mode)Overload capacity up to 110% continuous / 300 % for 4 cyclesTransient response <4% voltage change on instantaneous 0 to 100% load changesOperating modes On-line (standard); Standby (selectable)EMI emission < 30 dBrncTotal Harmonic Distortion <1% for linear loads /<3% for non-linear loads with crest factor of 3:1Output power factor 0.6 to 0.9 lagging or leadingDC noise feedback < 30 dBrncCalibration Digitally controlled automatic self calibrationTransfer time (with static switch) < 3 msecOver-current protection Integrated DC breaker with front accessRemote alarm indication Form C dry contact relay card (optional) / serial port (RS232) / RTU Modbus (optional)Display 2 x 20 LCD display with LED status bar

Environmental Characteristics Operating temperature -10° C to + 55° CStorage temperature -40° C to + 75° COperating altitude up to 10,000 feet above sea level without deratingAudible noise Less than 50 dBA per Type 2, IEC and ANSI SI.4

Agency CertificationsListings UL /CSA 60950, EN60950, CE, TUV, FCC Class A

Model Description - Inverter Modules OnlySystem

Capacity(kVA)

InverterCapacity

Quantityof

Inverters

Power(kVA/KW)

DC Input(Max. A)

Out. Amps@ 115 VAC

SystemWeight(app.)

HeatRejection

(Max. BTUs)

DC Breaker(A suggested)

AC Input CB(A suggested@ 115 VAC)

Height17.0”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 Maintenance Bypass Module• Rack Mount AC Distribution Panel w/ Alarm Indication (20 pole / 10 pole w/ indication) • Alarm relay card• Rack Mounting Kits (19”, 23”, 25” and 26” versions) • Redundant Controller Card• Circuit Breakers for AC Distribution (5,10,15,20,30,40,60 Amps, Single Phase) • RTU Modbus Communications

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