Honeywell AT72D Manual


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Side 1/12
INSTALLATION INSTRUCTIONS
69-1641EF-01
AT20, AT40, AT72D, AT87, AT88
AT Transformers
APPLICATION
The AT20, AT40, AT72, AT87 and AT88 TRADELIN
Transformers are step-down transformers used
primarily for powering 24 Vac control systems. They
can be used in any 24 Vac application that does not
exceed the transformer volt-ampere (VA) rating.
The TRADELINE® Transformers will replace all
equivalent Honeywell and competitive transformers
with similar primary voltage requirements, equal or
smaller VA ratings and similar mounting
configurations.
Transformer voltage ratings (primary and secondary),
wiring connection type, and fusing are listed in Table
1.
The transformers are Underwriters Laboratories Inc.
component recognized and Canadian Standards
Association listed and meet NEC Class 2 not wet,
Class 3 wet requirements as specified by NEMA
Standard DC-20.
SPECIFICATIONS
Models:
See Table 1.
Table 1. Transformer Model and Electrical Specifications.
a
Transformer complies with 24 volt NEMA Standard DC-20.
b
Available with female quick-connect terminals on all leadwires.
c
Thermal fuses in primary on 208V/240V models for overload protection.
Model
Primary Secondary Output at
100 Percent
Power
Rating
Overload
Protection
Voltage and
Frequency
Wiring
Connection Voltage
Wiring
Connection
AT20
a
120 Vac, 50/60 Hz Two 9 in. (229 mm)
leadwires
24 Vac Two 9 in. (229 mm)
leadwires
20 VA Energy
Limited
c
AT40
a
120 Vac, 50/60 Hz 40 VA
240 Vac, 50/60 Hz
AT72D
a
120 Vac, 50/60 Hz Two screw
terminals
240 Vac, 50/60 Hz Three 9 in. (229
mm) leadwires
AT87A
a
120 Vac, 50/60 Hz Two 13 in. (330
mm) leadwires
50 VA
208 Vac, 50/60 Hz
240 Vac, 50/60 Hz
AT88A 120Vac, 50/60 Hz Two 12 in. (305
mm) leadwires
24 Vac Two 12 in. (305
mm) leadwires
75 VA Fuse in
secondary
208/240 Vac,
50/60 Hz
400 Vac, 50/60 Hz
480 Vac, 50/60
Hz
b


Produkt Specifikationer

Mærke: Honeywell
Kategori: Ikke kategoriseret
Model: AT72D

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