Hammond Transformers Model 274X (200 Series)

Classic Plate and Filament Power Transformer - 138 VA, 750V C.T. @ 126 mA, 5V @ 3 A Filament #1, 6.3V C.T. @ 5 A Filament #2

This high voltage primary transformer can be run full wave bridge or full wave C.T. These units are enclosed 4-hole chassis mount and have Class A insultation (105 C).

Features:

  • Primary 115 VAC, 60 Hz.
  • For "universal" primaries and/or 50/60 Hz. operation and other output voltage combinations please see Hammond’s 300 Series.
  • Enclosed, 4-hole, chassis mount.
  • Minimum 6" long leads.
  • Units can be run full wave bridge or full wave C.T.
  • Class A insulation (105 degrees C).
  • Hi-Pot test of 2,000V RMS.
  • Conservative designs - CSA certified (209651).

Choice #1 (115 VAC Input):

For those customers who need the 115V input - nothing has changed - simply use the White & Gray wires and tape the Black wire (see schematic on Series Spec Sheet in download section).

Choice #2 (125 VAC Input):

For those customers who are seeing too high a secondary voltage due to higher primary line voltages (roughly 125V input) - use the White & Black wire and tape the gray wire (see schematic on Series Spec Sheet in download section).

NOTE: Most of the "Z" mounts do not apply to choices #1 and #2 above. See their respective drawings, on the Series Spec Sheet in the download section, for available primary voltages.

CAUTION

NEVER connect power to BOTH the GRAY & BLACK wire - instantaneous destruction of the transformer will result!

Specifications:

  • Primary Voltage Rating: 115 VAC
  • Secondary Voltage Rating: 750 VAC CT
  • Operating Frequency: 60 Hz
  • Operating Temperature Range: 0 C to + 105 C
  • Power Rating: 138 VA
  • Secondary Current Rating: 126 mA
  • Filament #1 (VAC): 5V @ 3 A
  • Filament #2 (VAC): 6.3V C.T. @ 5 A
  • Primary Winding: Single
  • Secondary Winding: Dual
  • Shielding: Enclosed
  • Termination Style: Wire leads
  • Mounting Style: Chassis Mount 4-hole
  • Width: 3.13”
  • Depth: 3.5”
  • Height: 3.81”

Manufacturer's Warranty

Hammond Transformers Model 274X

SKU: HAMMOND-71968

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MSRP: CAD $168.38
CAD $126.28
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Unit of Measure: Each

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