PXe-BLS Dual Redundancy AC Power Supply with redundancy for mission critical systems

PX-BLS Series Mission Critical AC Power Sources

PX Electronics PX-BLS AC power supply with redundancy for critical systems is a high-reliability AC power system designed for environments where performance and uptime are non-negotiable.

Key Features:

True mission-critical design — Engineered for continuous, stable power in aerospace, defense, medical, and industrial applications.
Clean and precise output — Pure sine wave power with low harmonic distortion ensures sensitive equipment operates flawlessly.
Advanced protection — Safeguards against overload, short circuit, over-voltage, and thermal conditions.
Flexible performance — Wide input/output voltage and frequency options to meet global standards and custom requirements.
Operator-friendly — Intuitive controls with LCD/LED monitoring for real-time system status.

Ideal for: mission-critical test labs, avionics, defence systems, medical facilities, and industrial platforms where downtime is not an option. The PX-BLS AC power supply with redundancy for critical systems is a reliable choice.

Click here to view the PX-BLS series inverter datasheet

AC power supply with redundancy and fail-safe operation

Applications

Telecom base station/ Cable TV Equipment
Communication Station
Computer data centre
SCADA Networks and Data Equipment
Phone and cell base stations
Radio Base stations / Cell Sites
Monitoring centre room
City WIFI device
Emergency communication systems
Railway & metro networks
Distributed Antenna Systems
Building Management Systems
Fire Alarm Systems
Power utilities System Control Scada
Power plant control and data systems
Power monitoring systems
Solar power system PV comms
Wind energy system

Features

True sine wave output (THD% < 2.5%)
Large 128*64 digital LCD display
Standard 19” Rack mount case
Volt-free contact: DC input fault, AC input fault
System/Status reporting, fault reporting, by-pass
RS232, RS485, Modbus RTU and TCIP comms Ports
Power-on self-test, Soft start for output
Auto switch function: DC to AC, AC bypass in 5mS
Audible and visual alarm
Automatic start temperature control fan
Build in voltage regulator Stabilize AC voltage
Maintenance bypass / DC available
Protection : Short circuit protection, over load protection, battery over/under voltage protection,
Unattended operation: the system switches automatically to ensure continuous AC Power to the critical load
Automatic selection between DC input and AC input

PX-BLS Back Panel

Comms Background Program

Hardware structure and working principle

AC power supply mode

Namely AC inverter working mode: the inverter employs mains for load when there is mains and

switches to inverter working mode when the mains is abnormal.

DC power supply mode

Namely DC-dominated inverter working mode: under normal condition,

DC-dominated inverter is under inverter output status all the time; in case

of DC fault, it switches to mains by-pass.

Technical Index (VA)			1KVA	2KVA	3KVA	4KVA	5KVA	6KVA	8KVA	10KVA
INPUT	22Vdc—28Vdc		Rate Voltage 24Vdc, Power off Voltage:≤20Vdc, ≥30Vdc,
	45.5Vdc—57Vdc		Rate Voltage 48Vdc, Power off voltage≤40Vdc, ≥60Vdc
	104Vdc—131Vdc		Rate Voltage 110Vdc, Power off voltage≤90Vdc, ≥135Vdc,
	208Vdc—260Vdc		Rate Voltage 220Vdc, Power off voltage≤180Vdc, ≥275Vdc,
	24Vdc input Max current		42A/42A	83A/83A	125A/125A	X	X	X	X	X
	48Vdc input Max current		21A/21A	42A/42A	63A/63A	83A/83A	104A/104A	125A/125A	167A/X	208A/X
	110Vdc input Max current		9A/9A	18A/18A	27A/27A	36A/36A	45A/45A	55A/55A	72A/X	90A/X
	220Vdc input Max current		4.5A/4.5A	9A/9A	13.5A/13.5A	18A/18A	22.5A/22.5A	27A/27A	36A/X	45A/X
	By-pass	Voltage Range	180Vac~260VAC /90Vac~132Vac
		Current	4.5A/8.3A	9.1A/16.5A	13.6A/26A	18.2A/33A	22.7A/41A	27.2A/50A	36.3A/x	45.4A/x
		By-pass Transient time	≤5ms
	frequency		50/60Hz
AC OUTPUT	Output Capacity(VA)		1KVA	2KVA	3KVA	4KVA	5KVA	6KVA	8KVA	10KVA
	Rated output Power(W)		0.8KW	1.6KW	2.4KW	3.2KW	4KW	4.8KW	6.4KW	8KW
	Rated Output current		3.6A	7.3A	11A	14.5A	18.2A	21.8A	29A	36.3A
	Output Voltage		220Vac(±10V)/110V(±5V) ,Adjustable LCD display
	Output Voltage precision（V）		220V±1.5%/110V±1.5%
	Power factor		＞0.8
	Inversion efficiency（80%）		≥85%（80% liner Load）
	Over load		100%-120% 60s ,121%-150% 10s
	Dynamic response time		Dynamic response time: < 5% Vnom for load change 0% to 100%, transient time < 5ms
	Waveform		Pure sine wave
	By-pass Switch time		≤5ms
	Output Frequency precision		50Hz/60Hz
	Output Frequency		50-60Hz(auto sync with bypass input)
	THD		≤3%
Indication	LCD display		Input and output Voltage, Frequency ,Output Current,Temperature,Percentage,LOGO etc.
Indication	Inverter Status		Normal Mains, Normal Inversion, Battery Under-voltage and output overload
COMPLIANCE	LVD		EN 60950-1
COMPLIANCE	EMC/EMI		EN 61000-6-3; EN 61000-6-1 ;IEC 61000-6-2 and IEC 61000-6-4
Cooling	Temperature control		2 Fans		4 Fans		6 Fans		4 Fans
Color	Black /Customizable
Dimensions			482mm/347mm/88mm W/D/H 2U			482mm/430mm/88mm W/D/H 2U			482mm/470mm/176mm 4U
Protection	Internal Protection		Overload Protection, Over temperature protection, Short circuit protection, Input ac voltage limit protection ,Reverse polarity on dc input side
	Input DC Voltage Alarm		Battery Under-voltage,
	LCD Audible and visual alarm		false Red LED light and Beebe
	Temperature		Temperature control fan
	Alarm record		standard is 1000 events (alarms), minimum is 100
Interface	5 Routes Dry relay contact		For remote indication of alarm / shut down conditions
	RS232& RS485		Both of available, For remote operation and monitoring
	Option		SNMP ,TCP/IP
Dielectric strength	between output and input		3500Vdc/10mA//1min . No flashover, no breakdown
	between input and chassis		3500Vdc/10mA//1min . No flashover, no breakdown
	between output and chassis		750Vdc/10mA//1min. No flashover, no breakdown
	Dielectric strength		1500Vac.1 minutes (Input and output)
Working Environment	Noise(1m)		≤40dB
	Operating Environment Temperature		-20℃~+50℃
	Humidity		0~90%, No moisture condensation
	Operating Altitude (m)		Altitude Full power up to 2000m.derating -2% / 100m, max altitude 5000m
	Humidity		5…95%, non condensing

Quality

We are committed to providing products that meet international quality requirements. PX Electronic certifies that all products meet or exceed their published specification, European & USA safety requirements.

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