Open Frame Power Supply


27.6V 60W / PJU-27V60WCBA

Highlights & Features

  • Universal AC input voltage range
  • Zero switch over time from loss of AC to battery operation
  • Protection against reverse polarity battery connection
  • Built-in diagnostic monitoring for AC OK and Battery Low status
  • Overvoltage / Overcurrent / Over Temperature / Short circuit Protections
  • Built-in over current and short circuit protection in Buffering (battery discharging) mode operation
Dimensions (L x W x D) : 
103.4 x 62 x 37 mm
4.07" x 2.44" x 1.46"
Unit Weight : 
0.25 kg (0.55 lb)
Nominal Output Voltage
Output Current
Output Voltage Adjustment Range
Output Power
Line Regulation
< 0.5% (90-264Vac @ 100% load)
Load Regulation
< 1.0% (90-264Vac @ 0-100% load)
< 100mVpp
Start-up Time
< 3,000ms @ 115Vac (100% load),
< 1,500ms @ 230Vac (100% load)
Hold-up Time
> 10ms @ 115Vac (100% load)
Dynamic Response (Overshoot & Undershoot O/P Voltage)
± 5%, @ 115-264Vac input, 0-100% load (Slew Rate: 0.1A/μS, 50% duty cycle @ 5Hz to 1kHz)
Start-up with Capacitive Loads
3,600μF at 27.6V/2.15A
Rise Time
< 50ms @nominal input
Nominal Input Voltage
Input Voltage Range
For power de-rating at 90-115Vac
Nominal Input Frequency
Input Frequency Range
Input Current
< 1.2A @ 115Vac, < 0.8A @ 230Vac
Efficiency at 100% load
> 88.0% @ 115Vac
> 89.0% @ 230Vac
Max Inrush Current
< 60A @ 115Vac & 230Vac (Cold Start)
Leakage Current
IEC/EN 60950-1: < 0.5mA / 1.0mA @ 264Vac (TN/TT system / IT system)
IEC/EN 62368-1: < 1.0mA / 2.0mA @ 264Vac (TN/TT system / IT system)
Max Power Dissipation
No Load:
< 0.50W @ 115Vac
< 0.65W @ 230Vac

100% Load: < 9W @ 115Vac & 230Vac
103.4 x 62 x 37 mm
4.07" x 2.44" x 1.46"
Unit Weight
0.25 kg (0.55 lb)
Case Chassis / Cover
Green LED: DC OK
Cooling System
Noise Sound Pressure Level (SPL)
< 25dBA (1 Meter from power supply)
Operating Temperature
-20°C to +70°C
Storage Temperature
-40°C to +85°C
Power De-rating
See datasheet
Operating Humidity
5 to 95% RH (Non-Condensing)
Shock Test (Non-Operating)
IEC 60068-2-27, Half Sine Wave: 50G for a duration of 11ms; 3 times per direction, 9 times in total
Shock (Operating)
IEC 60068-2-27, Half Sine Wave: 10G for a duration of 11ms; 1 time in X axis
Vibration Test (Non-Operating)
IEC 60068-2-6, Random: 5-500Hz; 2.09Grms; 20 min per axis for all X, Y, Z directions
Vibration (Operating)
IEC 60068-2-6, Sine Wave: 10-500Hz; 2G peak; displacement of 0.35mm; 60 min per axis for all X, Y, Z directions
Operating Altitude
0 to 5,000 Meters (16,400 ft.)
Pollution Degree
Over Voltage Category
<34.8V, Latch Mode
Overload / Overcurrent
105-160% of rated load current, Hiccup mode, Non-Latching (Auto recovery)
Over Temperature
Latch mode
Short Circuit
Hiccup Mode, Non-Latching (Auto-recovery when the fault is removed)
Degree of Protection
18.0V ± 0.3V
Protection Against Shock
Class I with Primary Earth connection
Battery Polarity Protection
Wrong Battery Voltage Protection
Yes, 32Vdc Max will not cause damage to the unit
> 700,000 hrs. as per Telcordia SR-332
I/P: 115Vac & 230Vac, Ta: 25°C
O/P: 13.8V/4.3A for 13V model and 27.6V/2.15A for 27V model
Expected Cap Life Time
10 years (115Vac & 230Vac, 50% load @ 35°C)
Electrical Safety
SIQ Bauart: EN 60950-1, EN 62368-1
UL/cUL recognized: UL 60950-1 and CSA C22.2 No. 60950-1 (File No. E191395), UL 62368-1 and CSA C22.2 No. 62368-1 (File No. E191395)
CCC: GB4943.1
CB scheme: IEC 60950-1, IEC 62368-1
In conformance with EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU
Galvanic Isolation
Input to Output: 3.0KVac
Input to Ground: 1.5KVac
Output to Ground: 0.5KVac
Safety Entry Low Voltage
SELV (EN 60950-1, EN 62368-1)
Material and Parts
RoHS Directive (2011/65/EU)
(CE & RE)
CISPR 32, EN 55032, FCC Title 47: Class B GB9254.1
EN 55024
Harmonic Current Emissions
IEC/EN 61000-3-2, Class A, GB17625.1
Voltage Fluctuation and Flicker
IEC/EN 61000-3-3


Datasheet Uploaded on 22-Apr-2019 1.1 MB
.DXF Uploaded on 04-Feb-2019 1.2 MB
Manual Uploaded on 31-Jan-2019 1.6 MB
Mechanical Drawing Uploaded on 31-Jan-2019 296 KB
.STP Uploaded on 04-Feb-2019 10.8 MB
Image Uploaded on 01-Feb-2019 345 KB


CB Uploaded on 31-Jan-2019 1.0 MB
CCC Uploaded on 31-Jan-2019 1.4 MB
CE Uploaded on 31-Jan-2019 188 KB
REACH Uploaded on 18-Dec-2018 545 KB
RoHS Uploaded on 18-Dec-2018 380 KB
SIQ Uploaded on 31-Jan-2019 2.7 MB
UL Uploaded on 31-Jan-2019 68 KB
We use cookies to provide the best user experience for those who visit our website. By using this website you agree to the placement of cookies and our Privacy Policy . ACCEPT