Hammond PWDP13049 Alpha 91b/99 TPX-X168 C-Core Power Transformer
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224-955-1644Key Features
- Alpha Power P/N TPX-X168 power transformer for Alpha 91b and 99
- S1 0-2050 VAC @ 1.5A CCS high-voltage winding
- Low-voltage windings: 105 VAC, 310 VAC, 28 VCT and 13.3 VAC
- Dual 0-100-120 VAC primary, 50/60 Hz
- A-0516 C-core, Style 9
- Optional flipped coils for lead exits on the opposite side
- Approx. 37 lbs; REACH and RoHS compliant
PWDP13049 is the power transformer for the Alpha 91b and Alpha 99, matching Alpha Power part number TPX-X168. It is part of the Peter W Dahl Transformers series and serves owners and service shops maintaining these amplifiers.
The primary consists of two 0-100-120 VAC windings rated 50/60 Hz, single phase. Five secondaries are provided, all rated CCS:
- S1: 0-2050 VAC @ 1.5 A
- S2: 105 VAC @ 0.5 A
- S3: 310 VAC @ 0.5 A
- S4: 28 VCT @ 3.0 A
- S5: 13.3 VAC @ 7.2 A
It uses an A-0516 C-core, listed as Style 9, with a two-coil construction (top and bottom coils on each side) shown on the dimensional drawing, and weighs approximately 37 lbs (shipping 37 lbs / 16.78 kg). Drawing dimensions, taken from the Dahl specification and verified on a physical sample, include 6.075 in and 6.568 in coil-side values, 4.750 in and 6.000 in base values, and 5.750 in and 7.700 in side-view values. An option allows the coils to be flipped so the lead exits are on the opposite side to maintain chassis wall clearance, with additional lead length added.
Hipersil C-Core Style 8, 9 and 10 models need to be quoted by the office, so confirm pricing and availability for PWDP13049. It is REACH and RoHS compliant.
Ideal For
- Alpha 91b repair
- Alpha 99 power transformer replacement
- Alpha Power TPX-X168 replacement
Overview
| Series | PWDAHL Series (Peter W Dahl Transformers) |
| Description | ALPHA POWER P/N TPX-X168 ALPHA 91b AND 99 POWER TRANSFORMER |
| Part Number | PWDP13049 |
| Product Type | Power Transformer |
| Short Description | ALPHA POWER TPX-X168 |
| Original Part Number | Alpha Power TPX-X168 |
Dimensions
| Dimension Source | All dimensions from both Dahl specification and verified on physical sample |
| Drawing Dimension | 0.281 in |
| Base Dimensions (Drawing) | 4.750 in; 6.000 in |
| Height Dimension (Drawing) | 6.568 in |
| Approx. Weight (Series Table) | 37 lbs |
| Coil Side Dimensions (Drawing) | 6.075 in (3.263 in + 2.813 in) each side |
| Side View Dimensions (Drawing) | 5.750 in; 7.700 in |
Electrical
| Primary | 0-100-120 & 0-100-120 VAC 50/60 HZ 1 PH |
| Secondary S1 | 0-2050 VAC @ 1.5A CCS |
| Secondary S2 | 105 VAC @ 0.5A CCS |
| Secondary S3 | 310 VAC @ 0.5A CCS |
| Secondary S4 | 28 VCT @ 3.0A CCS |
| Secondary S5 | 13.3 VAC @ 7.2A CCS |
Identifiers
| UPC | 623980240381 |
| UNSPSC | 39121301 |
Packaging & Shipping
| Shipping Weight | 37 lbs (16.78 kg) |
Construction & Finish
| Core | A-0516/ C-CORE |
| Lead Exit Option | Coils can be flipped to have lead exits on opposite side of transformer to maintain chassis wall clearance; additional length added to leads |
| Coil Arrangement (Drawing) | Top coil and bottom coil on each side |
| Style (Per Series Style Sheet) | 9 |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
Which amplifiers use PWDP13049?▾
It is listed as Alpha Power P/N TPX-X168, the Alpha 91b and 99 power transformer.
What are the secondary ratings?▾
S1 0-2050 VAC @ 1.5A, S2 105 VAC @ 0.5A, S3 310 VAC @ 0.5A, S4 28 VCT @ 3.0A and S5 13.3 VAC @ 7.2A, all CCS.
Can I use it on 50 Hz mains outside North America?▾
Yes, the primary is listed as 0-100-120 & 0-100-120 VAC 50/60 Hz single phase.
Can the lead exits be moved to the other side?▾
The drawing shows an option to flip the coils so lead exits are on the opposite side to maintain chassis wall clearance, with additional length added to the leads.
How is it priced?▾
Hipersil C-Core models in Styles 8, 9 and 10 need to be quoted by the office; confirm pricing and availability by phone or e-mail.
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