Dongan Electric Manufacturing Series 21HG Catalog Page

Series 21HG - Hospital Isolation Transformers

Series 21HG - Medical Isolation Transformers are
designed for installations requiring the use of an
isolated, single phase power supply in nonhazard­ous areas of health care facilities. They feature low
leakage current values of 20 to 50 microamperes
demanded in hospital line isolation applications.

The low prole series feature “pancake” designs to
t shallow wire ways and enclosures for operating

rooms and other demanding hospital environments.
All Series 21HG feature electrostatic shields and
convenient wire lead termination. Other termina­tions are avalilable by consulting the factory or your
Dongan® Representative.

Series 21HG are UL Recognized under Standards
UL1047 and UL 506, File E155483.

Features

• UL Recognized, File E155483.

• Complies with UL Standards 506 & 1047.

• Core and Coil designs, 60 Hertz.

• UL Recognized 200°C insulation system

File E100887.

• Single Phase designs in sizes:
3 kVA to 15 kVA - Low Prole Style.

15 kVA to 37.5 kVA - Upright Style.

• Ground terminal and electrostatic shield

provided on all units.

• All Copper windings.

• Leakage current values range from 20 to 50

microamperes depending on kVA size and
secondary voltage.

• Consult factory for desired voltage combina­tions and kVA sizes not listed.

General Information

Pri. Volts

Sec. Volts

kVA

Cap.

3 -0313 -0301 -0305 -0302 -0308 -0304 12.50 15.00 5.00 11.25 12.75 55
5 -0513 -0501 -0505 -0502 -0508 -0504 12.50 15.00 5.00 11.25 12.75 90

7.5 -0713 -0701 -0705 -0702 -0708 -0704 14.50 17.00 5.50 13.25 15.25 100
10 -1013 -1001 -1005 -1002 -1008 -1004 14.50 17.00 7.00 13.25 15.25 135
15 -1513 -1501 -1505 -1502 -1508 -1504 14.50 17.00 7.00 13.25 15.25 145

15 -1513FM -1501FM -1505FM -1502FM -1508FM -1504FM 18.00 13.00 7.50 10.00 6.25 145
25 -2513FM -2501FM -2505FM -2502FM -2508FM -2504FM 18.00 13.00 8.75 10.00 6.88 190

37.5 -3713FM -3701FM -3705FM -3702FM -3708FM -3704FM 18.00 13.00 10.50 10.00 8.50 290

120 208 240 277 277 480

120 120 120 120 208 120

60 Hz 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz

Catalog
Number

Catalog
Number

Choose Sufx below for prope

Choose Sufx below for proper voltage / kVA combinaton

Catalog
Number

Low Prole Series, Prex 21HG

Upright Series, Prex 21HG

Catalog
Number

r voltage / kVA combination

Catalog
Number

Catalog
Number A B C

Dimensions (inches)

Mounting

D E

Series 21HG

Weight

(lbs)

Low Prole Series - Wall Mount

Dimensions & weights may change. Consult factory for certied drawings.

Upright Series - Floor Mount

23