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KEPCO, INC. 

   

 131-38 SANFORD AVENUE 

 

  FLUSHING, NY. 11355 U.S.A.

 

  TEL (718) 461-7000

   

 FAX (718) 767-1102

  

http://www.kepcopower.com   

 

 email: [email protected]

 083013

228-1563 REV 10

5

III — SPECIFICATIONS

The following specifications apply to all HSF-1UR 50 Watt
Series models (also refer to Table 1) except where noted.
Other models are also available; consult your Kepco repre-
sentative for their specifications.

INPUT: 

Voltage: 120V a-c/240V a-c nominal; Range 95-264V

a-c; 125-370V d-c. (polarity insensitive; consult

factory)

Frequency: Nominal 50-60 Hz; Range 47-440Hz (at

440Hz leakage current exceeds UL/VDE safety

spec.limit).

Current (nominal output at rated load):

  -1UR: 

1.0A a-c typ., 1.2A a-c max (120V a-c rms input); 

0.5A a-c typ., 0.7A a-c max. (240V a-c rms input)

Options T, C, X and Y, all except 3.3V model: 

0.7A rms max. (100-120 Va-c input); 

0.4A rms max. (200-240 Va-c input).

  Options T, C, X and Y, 3.3V model: 

0.6A rms max. (100-120 Va-c input); 

0.3A rms max. (200-240 Va-c input).

Initial Turn-on Surge: (one-half of first input cycle):

@120V a-c rms, 45A max., 

@240V a-c rms, 90A max.

Brownout Voltage: 85V a-c, 110V d-c

Switching Frequency: 120KHz typical, nominal load

STABILIZATION: 

Source Effect: Range 95-132V a-c or 

190-265V a-c, 0.2% typ.; 0.3% max.

Load Effect: Range 10%-100% load, 0.5% typ.; 1.5%

max.

Temperature Effect: Range 0

o

 to 40

o

C, 0.5% typ.;

1.0% max.

Combined Effect: 0.9% typ.; 1.8% max. (includes

source, load, and temperature effects).

Time Effect: 0.2% typ.; 0.5% max. (1/2 hr-8 hr at

25

o

C).

RECOVERY CHARACTERISTICS:  

  A step load

change from 50% to 100% produces less than +4% output
excursion. Recovery occurs to 1% of the original
setting in <2 ms (load change t

or t

f

 equal to or greater

than 50

µ

sec).

START-UP TIME:  

500 ms. maximum. 

HOLDUP TIME:  

-1UR: 20 ms. typ. (120V a-c), 15 ms. min (100V a-c);
 Options T, C, X and Y, all except 3.3V and 28V mod-

els: 30ms typ. (20ms min.); 

Options T, C, X and Y, 3.3V model: 

55ms typ., 40ms min.; 

Options T, C, X and Y, 28V model: 

35ms typ., 25ms min.

DIELECTRIC STRENGTH: 

 

Between input and output: 2KV a-c (3KV a-c for

Options T, C, X and Y) for one minute.

Between input and output with Y-capacitor removed:

3.75KV a-c for one minute.

Between input and case (ground): 2KV a-c for one

minute.

INSULATION RESISTANCE: 

 Between input and

ground, output and ground, input and output;

100 Megohms min. (500V d-c).

LEAKAGE CURRENT  

-1UR Models:

UL method, 120V a-c: 0.5 mA maximum; 

VDE method, 240V a-c: 0.75 mA maximum.

Options T, C, X and Y:

120V a-c and 60 Hz (in conformance with Den-An):

0.28mA typ, 0.45mA max; 

240V d-c and 60 Hz (in conformance with IEC 950

and UL1950)0.38mA typ, 0.6mA max.

SAFETY:  

UL 60950-1, 1st Edition, 2007-10-31; CSA

C22.2 No. 60950-1-03, 1st Edition, 2006-07; EN 60950.
Units are CE marked per the Low Voltage Directive (LVD),
73/23/EEC and 93/68/EEC. [The standards do not apply
with DC input operation]

EMI:  

Designed to meet FCC Class B (100-120V a-c) and

VDE 0871 Class B (220-240V a-c).

VIBRATION:  

(non-operating, one hour on each one of

the three axes): 5-10 Hz, 10 mm amplitude, 10-55

Hz, 2g acceleration.

SHOCK:  

(non-operating, one-half sinusoidal pulse, three

shocks to each axis): Acceleration: 20g, Duration:

11ms +5ms

OPERATING TEMPERATURE:  

See Figure 5.

STORAGE TEMPERATURE:  

-40

o

C to +75

o

C.

OPERATING AND STORAGE RELATIVE 

HUMIDITY:  

up to 95% (wet bulb temp. <35

o

C non-con-

densing).

Summary of Contents for HSF-1UR 50W Series

Page 1: ...od els is a Kepco RKW power supply 28V model not avail able T option 1URT models use a Kepco RTW power supply instead of the RKW T option models weigh less and have improved efficiency input current specifications All volt ages are available C option 1URC models include a current sensing resis tor allowing external current monitoring within 10 con tact Kepco if greater accuracy required In additio...

Page 2: ...T CURRENT NOMINAL 3 10A 10A 4 3A 3 5A 2 2A 3 2A Peak 8 1 8A 1 1A CURRENT LIMIT 4 10 5A min 10 5A min 4 5A min 3 68A min 3 3A 2 3A 9 min 1 9A min 1 15A min OUTPUT POWER MAX 5 33W 50W 51 6W 52 5W 52 8W 50 4W 52 8W SHORT CIRCUIT CURRENT 4 15A 15 5 9 12 6A 5 6A 5 4A 4 5 9 3A 9 2 5A 2 4A 1 7A 9 RIPPLE AND NOISE mV p p 0 40 C 10 100 LOAD switching typ 80 80 100 100 100 150 200 spike noise d c 50MHz 120 ...

Page 3: ... drop across REQ is measured across IMON pins requires millivoltmeter range 0 to 250mV Accuracy is 10 contact Kepco if greater accuracy is required There is no isolation between IMON alarm circuit and d c out put Refer to the applicable RA 19 1U Manual for details ALARM CIRCUIT The HSF 1UR includes an isolated internal relay offering normally closed and normally open contacts referenced to an isol...

Page 4: ...indicates that forced current share is no longer work ing units are simply in current share mode If forced cur rent sharing at less than 10 nominal current per supply is needed contact Kepco application engineering Remote sensing is recommended For master slave oper ation to work properly each unit should be adjusted to 40 mV optimum less than the next paralleled unit unit 1 is adjusted to VOUT un...

Page 5: ...ces less than 4 output excursion Recovery occurs to within 1 of the original setting in 2 ms load change tr or tf equal to or greater than 50µsec START UP TIME 500 ms maximum HOLDUP TIME 1UR 20 ms typ 120V a c 15 ms min 100V a c Options T C X and Y all except 3 3V and 28V mod els 30ms typ 20ms min Options T C X and Y 3 3V model 55ms typ 40ms min Options T C X and Y 28V model 35ms typ 25ms min DIEL...

Page 6: ... Adapter CAUTION The ON OFF switch must be set to OFF before removing the unit from the rack adapter V OPERATION Turn the unit on using the front panel POWER switch see Figure 6 CAUTION DO NOT repeatedly toggle the POWER on off switch as this may cause unit to fault When output voltage is available the VDC ON LED is on green All 50W models use convection cooling and do not include a fan While moni...

Page 7: ...MENSIONS ARE IN INCHES DIMENSIONS IN BRACKETS ARE IN MILLIMETERS FRONT PANEL KEPCO DUAL TONE GRAY C FRONT PANEL 0 090 THK ALUM 6061 T6 A BACKPLATE 0 064 THK ALUM 5052 H32 3 MODULE IS KEYED AS SHOWN IN DETAIL 0 591 15 0 1 MATERIAL B PCB 0 063 THK FR 4 2 FINISH KEY PIN LOCATION 48 VOLTS 28 VOLTS 24 VOLTS 15 VOLTS 5 VOLTS 3 3 VOLTS 12 VOLTS 0 129 3 3 3 755 95 4 0 303 7 7 0 690 17 5 4 275 108 6 0 260 ...

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