
HT
50
Libertyville, IL (847) 680-7400
HT Series
High Performance
RFI Power Line Filters
for Medical Equipment
UL Recognized
CSA Certified
VDE Approved
HT Series
HT series power line filters provide superior common-
mode and premium differential-mode attenuation to RFI
noise on the frequency range from 10kHz to 30MHz, for
IEC601 and UL544 patient-connected equipment, as well
as all other electronic equipment that cannot tolerate any
leakage current.
They are a size- and cost-effective solution to the
problem of meeting both medical leakage current limits
and conducted emissions limits in equipment with high
noise sources (such as switching power supplies). HT
series filters can ensure compliance to the following
Conducted Emissions standards:
German FTZ Decree #243/1991, Quasi-peak and
Averaging limits.
European Normalized Standards based on EN55022,
Level A (in many cases, Level B also).
FCC Part 15, Computing Devices, Class B.
FCC Part 18, ISMEquipment, Industrial and
Consumer.
They also provide premium susceptibility protection to
medical equipment, permitting error-free operation in
noisy environments and enabling compliance to IEC801-6
and the FDA guidelines.
Electrical Schematics
6 Amp
10 Amp
15 Amp
Specifications
Maximum leakage current, each
line-to-ground
@ 120 VAC 60 Hz:
2A
@ 250 VAC 50 Hz:
5A
Hipot rating (one minute):
line-to-ground
1500 VAC
line-to-line
1450 VDC
Operating frequency:
50/60 Hz
Rated voltage:
120/250 VAC
Rated current:
@120 VAC
@ 250 VAC
6EHT
6A
5A
10EHT
10A
8A
15EHT
15A
12A
Minimum insertion loss in dB:
Resistor location for reference only.
Line-to-ground in 50 ohm circuit
Current
Frequency MHz
Rating .01 .02 .05 .08 .15
.5
1
2
5 10 20 30
6A
16 23 32 41
46 41
33 26 15
9
6
2
10A
9 15 24 30
36 42
34 22 11 12
8
15A
4
9 18 22
27 41
34 22 12 15
5
2
Line-to-line in 50 ohm circuit
Current
Frequency MHz
Rating .01 .02 .05 .08 .15
.5
.1
2
5 10 20 30
6A
4
1 14 45
51 70
70 65 55 47 37 37
10A
7
8 17 32
52 70
70 70 65 55 40 35
15A
12 16 15 10
51 70
70 70 70 70 65 55
HT1
HT7
HT6
HT3
Recommended Panel Cutout (HT7 & HT7M)
Line Cord
Line Cord No. GA400
7 1/2 foot, 3-conductor line cord to mate with T7 models
Panel Cutout (Back Mount)