HSF(A) 300W 040215
3
FIGURE 2. POWER RATING VS. TEMPERATURE
TABLE 2. HSF 300W (A, AM) OUTPUT RATINGS AND SPECIFICATIONS
HSF (A, AM) MODEL
5-60A, AM
12-27A, AM
15-22A, AM
24-14A, AM
28-12A, AM
48-7A, AM
Output Volts d-c (nominal)
5
12
15
24
28
48
Output
Adjustment
Range
(1)
(Volts d-c)
(2)
SW1 pos 7 OFF
(default)
2 to 5.5
4.8 to 13.8
6 to 17.4
9.6 to 28.2
9.6 to 29.0
19.2 to 52.2
SW1 pos 7 ON
0 to 5.5
0 to 13.8
0 to 17.4
0 to 28.2
0 to 29.0
0 to 52.2
Output Current (nominal) (Amps)
60
27
22
14
12
7
Maximum Output Power (Watts)
(3)
300
300
300
300
300
300
Current Limit Setting (Amps)
(4)(5)
63
28.4
23.1
16.7
16.7
7.4
Overvoltage Protection (OVP)
(Volts d-c)
(6)
5.75 - 6.75
14.5 - 16.9
18.3 - 21.3
29.5 - 34.3
29.5 - 34.3
54.7 - 63.9
Efficiency
(% typ.)
AC Input 100V
71
76
77
80
80
81
AC Input 200V
73
79
80
83
83
84
Maximum Ripple
& Noise
(7)
(mV, p-p)
0°C
70°C
120
150
150
150
150
350
-10°C
0°C
180
200
200
200
200
400
(1)
To adjust output voltage down to approximately 0V requires that DIP SW1, position 7 be set to ON. Refer to Table 5 for mini-
mum conditions required to maintain proper operation of alarm relay, meter (AM Models only) and VDC ON/ALARM indica-
tor.
(2)
Using trimpot to attain voltages outside the specified adjustment range may trigger overvoltage (PAR 3.6.1) faults. Recovery
is by removing, and after approximately 40 seconds, reapplying AC input power or by reset (open and close) at ±RC termi-
nals (no delay).
(3)
See Figure 2 for power derating.
(4)
CAUTION: The unit may be damaged if operated under overcurrent or shorted conditions for more than 30 seconds. If cur-
rent exceeds limit (5% of nominal), output voltage starts to drop. If overload condition continues, current up to 130% of nom-
inal may be experienced.
(5)
Constant current limit with automatic recovery, except 5V model: constant current limit with hiccup and automatic recovery
(see PAR. 3.6.2).
(6)
When overvoltage is detected, output is shut OFF. Recovery is by removing, and after approximately 40 seconds, reapplying
AC input power or by reset (open and close) at ±RC terminals (no delay).
(7)
Measure with JEITA RC-9131A probe, bandwidth of scope: 100MHz.
!
