
480W Single Output Switching Power Supply
HEP-480 series
5
■ Features ■ Applications
Universal AC input / Full range(up to 305VAC)
Built-in active PFC function
High efficiency up to 95%
Fanless design, cooling by free air convection
-55~+65 wide operating range℃
Aluminum case and filling with heat-conducted silicone
IP65 design, optional IP68 rated model available
Meet 6KV surge immunity level
Withstand 10G vibration test
Operating altitude up to 5000 meters (Note.7)
Protections: Short circuit / Overload / Over voltage
/ Over temperature
6 years warranty
■ Description
HEP-480 is a 480W industrial AC/DC power supply featuring the outstanding capability to operate under
highly humid, dusty, oily, and high-vibration harsh environment. The entire series is housed with the
aluminum case and fully potted with heat-conducted silicone. Thanks to state-of-the-art design, the working
efficiency is up to 95%, enabling HEP-480 perfectly work between -55 and +65 under free air convection.℃℃
IP65
IP68
(optional)
Outdoor telecommunication equipment
Outdoor electronic signage and billboard
Petroleum plant or mine shaft facility
■ Model Encoding
HEP -- 480 24 A
Function mode option
Output voltage
Output wattage
Series name
A : Standard model, IP65, Vo and o level can be adjustedI
through internal potentiometer.
{
Blank : Optional model, IP68, with fixed Vo and o level.I
File Name:HEP-480-SPEC 2018-03-30

SPECIFICATION
MODEL
DC VO LTAG E
RATED CURRENT
RATED POWER
RIPPLE & NOISE (max.)
VOLTAGE ADJ. RANGE
OUTPUT
INPUT
PROTECTION
ENVIRONMENT
SAFETY &
EMC
NOTE
CURRENT ADJ. RANGE
VOLTAGE TOLERANCE
LINE REGULATION
LOAD REGULATION
SETUP, RISE TIME
HOLD UP TIME (Typ.)
VOLTAGE RANGE
FREQUENCY RANGE
POWER FACTOR (Typ.)
EFFICIENCY (Typ.)
AC CURRENT (Typ.) 5A / 115VAC 2.45A / 230VAC 2A/277VAC
INRUSH CURRENT(Typ.)
LEAKAGE CURRENT
OVER CURRENT
SHORT CIRCUIT
OVER VOLTAGE
OVER TEMPERATURE
WORKING TEMP.
WORKING HUMIDITY
STORAGE TEMP., HUMIDITY
TEMP. COEFFICIENT
VIBRATION
SAFETY STANDARDS
WITHSTAND VOLTAGE
ISOLATION RESISTANCE
EMC EMISSION
EMC IMMUNITY
MTBF
DIMENSIONOTHERS
PACKING
1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25 of ambient temperature.℃
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor.
3. Tolerance : includes set up tolerance, line regulation and load regulation.
4. Length of set up time is measured at cold first start. Turning ON/OFF the power supply may lead to increase of the setup time.
5. Derating may be needed under low input voltages. Please refer to the STATIC CHARACTERISTICS for more details.
6. The power supply shall be regarded as one component of the final system. The EMC performance will be affected by the complete system installation
and/or configuration, the final system manufacturers must re-verify overall EMC directive with the complete installation and/or configuration.
7. The water protection level test for the IP68 rating is performed 1000mm below the surface of the water for 1 month.
8. Please refer to the warranty statement on MEAN WELL's website at http://www.meanwell.com
9. The ambient temperature derating of 3.5 /1000m with fanless models and of 5 /1000m with fan models for operating altitude higher than 2000m(6500ft).℃℃
480W Single Output Switching Power Supply
HEP-480-24 HEP-480-36 HEP-480-48 HEP-480-54
24V 36V 48V 54V
20A 13.3A 10A 8.9A
480W 478.8W 480W 480.6W
Note.2
200mVp-p 250mVp-p 250mVp-p 350mVp-p
Adjusted forA-type only (via built-in potentiometer)
Note.5
20.4 ~ 25.2V 30.6 ~ 37.8V 40.8 ~ 50.4V 45.9 ~ 56.7V
Adjusted forA-type only (via built-in potentiometer)
10 ~ 20A 6.6 ~ 13.3A 5 ~ 10A 4.4 ~ 8.9A
Note.3
±1.0% ±1.0% ±1.0% ±1.0%
±0.5% ±0.5% ±0.5% ±0.5%
±0.5% ±0.5% ±0.5% ±0.5%
Note.4
500ms, 80ms 115VAC/230VAC
16ms 115VAC/230VAC
Note.5
90 ~ 305VAC 127 ~ 431VDC
47 ~ 63Hz
PF 0.98/115VAC, PF 0.97/230VAC, PF 0.95/277VAC at full load≧≧≧
94% 95% 94.5% 95%
COLD START 35A at 230VAC
<0.75mA / 277VAC
105 ~ 125%
Constant current limiting, recovers automatically after fault condition is removed
Constant current limiting, recovers automatically after fault condition is removed
27 ~ 33V 40 ~ 50V 53 ~ 63V 60 ~ 70V
Shut down output voltage, re-power on to recover
Shut down voltage,output re-power on to recover
-55 ~ +65 (Refer to "Derating Curve")℃
20 ~ 95% RH non-condensing
-60 ~ +80 , 10 ~ 95% RH non-condensing℃
0.02%/ (0 ~ 60 )
±℃ ℃
20 ~ 500Hz, 10G 12min./1cycle, period for 72min. each along X, Y, Z axes
Note.7
UL60950-1 EAC TP TC 004, IP65 (or IP68 for HEP-480 Blank-Type), approved ; design refer to TUV EN60950-1
I/P-O/P:3.75KVAC I/P-FG:2KVAC O/P-FG:1.5KVAC
I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25 / 70% RH
Compliance to ,EN55032 (CISPR32) Class B, EN61000-3-2,-3 EAC TP TC 020
Compliance to , industry level (surge 6KV), criteria A,
89.8K hrs min. MIL-HDBK-217F (25 )
262*125*43.8mm (L*W*H)
2.8Kg;4pcs/11.5Kg/0.55CUFT
EN61000-4-2,3,4,5,6,8,11, EN55024 light EAC TP TC 020
℃
HEP-480 series
℃
File Name:HEP-480-SPEC 2018-03-30

Block Diagram
480W Single Output Switching Power Supply
HEP-480 series
PFC fosc : 45KHz
PWM fosc : 55KHz
RECTIFIERS
&
FILTER
FG
I/P
EMI FILTER
&
RECTIFIERS
PFC
CIRCUIT
O.L.P.
PFC
CONTROL
O.T.P.
POWER
SWITCHING
PWM
CONTROL
Derating Curve Static Characteristics
LOAD (%)
100
230VAC
80
60
40
20
1VAC10
LOAD (%)
100
90
80
70
60
50
40
+V
-V
O.L.P.
DETECTION
CIRCUIT
O.V.P.
-55 -25 -10 0 15 30 50 60 65 70
AMBIENT TEMPERATURE ( )℃ INPUT VOLTAGE (V) 60Hz
(HORIZONTAL)
90 110 125 135 145 155 165 175 180 200 230 305
File Name:HEP-480-SPEC 2018-03-30

480W Single Output Switching Power Supply
HEP-480 series
Mechanical Specification
A-Type (standard model)
For 24V,36V
FG (Green/Yellow)
AC/L(Brown)
AC/N(Blue)
SJOW 17AWG 3C & H05RN-F××3 1.0mm
300 20±
13.4
8.9
15
78
125
2
15
tc
: Max. Case Temperature
262
235.2
tc
58
113.8
Vo
ADJ.
Io
ADJ.
Case No. 251 Unit:mm
ψ×4.5 4PL
300 20±
SJO W 17AWG 2C & H05RN -F××2 1.0mm
SJO W 17AWG 2C & H05RN -F××2 1.0mm
Vo+(Brown)
Vo-(Blue)
2
Vo+(Brown)
Vo-(Blue)
2
43.8
For Others
FG (Green/Yellow)
AC/L(Brown)
AC/N(Blue)
SJOW 17AWG 3C & H05RN-F××3 1.0mm
300 20±
13.4
8.9
15
78
125
2
15
tc
: Max. Case Temperature
262
235.2
tc
58
113.8
Vo
ADJ.
Io
ADJ.
ψ×4.5 4PL
300 20±
SJO W 17AWG 2C & H05RN -F××2 1.0mm
Vo+(Brown)
Vo-(Blue)
2
43.8
File Name:HEP-480-SPEC 2018-03-30

Blank-Type (optional model)
For 24V,36V
FG (Green/Yellow)
AC/L(Brown)
AC/N(Blue)
SJOW 17AWG 3C & H05RN-F××3 1.0mm
480W Single Output Switching Power Supply
262
235.2
tc
58
300 20±
13.4
8.9
15
78
125
2
15
tc
: Max. Case Temperature
113.8
HEP-480 series
ψ×4.5 4PL
300 20±
Vo+(Brown)
Vo-(Blue)
SJO W 17AWG 2C & H05RN -F××2 1.0mm
SJO W 17AWG 2C & H05RN -F××2 1.0mm
2
Vo+(Brown)
Vo-(Blue)
2
43.8
For Others
13.4
8.9
15
FG (Green/Yellow)
AC/L(Brown)
AC/N(Blue)
SJOW 17AWG 3C & H05RN-F××3 1.0mm
300 20±
2
: Max. Case Temperature
INSTALLATION MANUAL
Please refer to : http://www.meanwell.com/manual.html
262
235.2
ψ×4.5 4PL
78
125
15
tc
tc
58
113.8
300 20±
SJO W 17AWG 2C & H05RN -F××2 1.0mm
Vo+(Brown)
Vo-(Blue)
2
43.8
File Name:HEP-480-SPEC 2018-03-30