ACME ELECTRIC
•
MILWAUKEE, WI
•
800.334.5214
•
acmetransformer.com
133
GENERAL
ELECTRICAL CONNECTION DIAGRAMS
ACME
®
TR NSF RMER
™
ACCESSORIE
Suffix
Tap Arrangement
– 1S
Two 5% (–) BNFC Taps
One 5% (+) ANFC Tap
– 2S
and
One 5% (–) BNFC Tap
Two 2-1/2% (+) ANFC Taps
– 3S
and
Four 2-1/2%(–) BNFC Taps
Two 2-1/2% (+) ANFC Taps
– 4S
and
Two 2-1/2% (–) BNFC Taps
Two 5% (+) ANFC Taps
– 5S
and
Two 5% (–) BNFC Taps
kVA
Mounting Position
Illustration
27.0 –
Bottom of
220.0
the case
Figure 1
275.0 –
Top Flange of the
750
Core Bracket
Figure 2
COIL 1
COIL 3
THERMAL SWITCH
.625 (1.6 cm) H DIA.
EPOXY-RING
CORE
EPOXY LAYER
TERMINAL BLOCK
H
.5H
(1.3 cm)
COIL 2
Figure 2
COIL 1 COIL 2 COIL 3
CORE
BOTTOM OF CASE
Required on:
Ventilated Units:
1Ø, 37.5 and 50 kVA
3Ø, 30, 45 and 75 kVA
Catalog Number: PL-79912
Encapsulated Units:
3Ø dit., 11 kVA — 20 kVA
3Ø std. distribution — 15 kVA
Catalog Number: PL-79911
Wall mounting brackets are not
required on:
1Ø units — 25 kVA and below
3Ø units — 9 kVA and below
The catalog number suffix provides tap
information as outlined in chart below:
If the catalog number has no suffix,
there are no taps available.
EXAMPLE: T-2-53019-3S
The suffix 3S indicates the unit has two 2.5%
(+) ANFC taps and four 2.5% (–) BNFC taps.
Acme Thermal Switch Kits are designed for usewith single and three
phase drive isolation and distribution transformers. Thermal switch kits
are available for one or three sensor systems.
Thermal sensors can be field or factory installed in the transformer
winding ducts to detect abnormal temperatures. The thermal sensors
are a normally closed contact that opens at 200°C ± 10°C and has a
current capacity of 5 amps @ 120V or 2.5 amps @ 240V. This contact
can activate any number of different types of alarms or mechanisms
that could warn of a potential failure.
Figure 1
Thermal Switch Kits
Catalog Number: PL-79900
Wall Mounting Brackets
Standard Taps
