Hammond 720 370 VA 1,250V C.T. Plate Transformer, 115V Primary
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Create Free Business AccountKey Features
- 370 VA (CCS) high voltage plate transformer
- 1,250V C.T. R.M.S. secondary: 300ma CCS, 450ma ICAS
- 115 VAC, 50/60 Hz primary (Black & Black input leads)
- Runs full wave bridge or full wave C.T.
- Enclosed 4 hole chassis mount with minimum 6" leads
- Class A insulation (105 degrees C); Hi-Pot tested at minimum twice secondary voltage
- CSA certified (209651); RoHS and REACH compliant
The 720 is a 700 Series high voltage (plate) transformer rated 370 VA, with a single 115 VAC, 50/60 Hz primary and a 1,250V C.T. R.M.S. high voltage secondary. It suits builders and service technicians who need a centre-tapped plate winding for a rectified high voltage supply running from a 115 VAC line.
The high voltage secondary is rated 300ma under CCS (Continuous Commercial Service) and 450ma under ICAS (Intermittent Commercial or Amateur Service); the 370 VA figure is a CCS rating. The unit can be run in either a full wave bridge or a full wave C.T. rectifier circuit, and the series design guide gives the voltage and current factors for each rectifier and filter arrangement.
Construction is enclosed with a 4 hole chassis mount and minimum 6" long leads. Insulation is Class A (105 degrees C), each design is Hi-Pot tested at a minimum of twice the secondary voltage, and the series is CSA certified (209651). The part is listed as RoHS and REACH compliant.
Primary wiring for the 720 is simple: the 115 VAC input is on the Black and Black leads. The same 370 VA, 1,250V C.T. rating is also offered as the 720A, which has a dual 117/234 VAC primary. Shipping weight is 12 lbs (5.44 kg).
Ideal For
- High voltage plate supplies for vacuum tube equipment
- Full wave bridge rectified high voltage DC supplies
- Full wave centre-tapped (C.T.) rectifier supplies
- Amateur radio (ICAS) intermittent service
Overview
| Series | 700 Series - High Voltage (Plate) - 259 VA to 1610 VA |
| Description | Transformer, high voltage, 370VA, 115 VAC to 1,250V C.T. @ 300ma., 700 series |
| Part Number | 720 |
| Short Description | 115V 50/60Hz 1250VCT 370VA |
| 117/234 VAC Primary Equivalent | 720A |
Electrical
| Frequency | 50/60 Hz |
| Hi-Pot Test | Minimum of twice secondary voltage |
| Primary Voltage | 115 VAC |
| Power Rating (VA) | 370 (CCS rating) |
| Primary Input Leads | Black & Black |
| Rectifier Configurations | Full wave bridge or full wave C.T. |
| H.V. Secondary Current (CCS) | 300ma. |
| H.V. Secondary Current (ICAS) | 450ma. |
| AC High Voltage Secondary (R.M.S.) | 1,250V C.T. |
Identifiers
| UPC | 623980286105 |
| UNSPSC | 39121301 |
Packaging & Shipping
| Shipping Weight | 12 lbs (5.44 kg) |
| Weight (Series Table) | 12 lbs |
Construction & Finish
| Lead Length | Minimum 6" long leads |
| Insulation Class | Class A (105 degrees C) |
| Enclosure / Mounting | Enclosed, 4 hole chassis mount |
Compliance & Certifications
| CSA | Certified (209651) |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
What are the ratings of the 720?▾
The 720 is rated 370 VA (a CCS rating) with a 115 VAC, 50/60 Hz primary and a 1,250V C.T. R.M.S. secondary rated 300ma. CCS and 450ma. ICAS.
What do CCS and ICAS mean?▾
CCS is Continuous Commercial Service and ICAS is Intermittent Commercial or Amateur Service. The VA rating is specified as CCS.
How is the 720 primary connected?▾
It is a 115 VAC only model; the input is on the Black and Black leads.
What rectifier circuits can it be used with?▾
The unit can be run full wave bridge or full wave C.T.
What is the difference between the 720 and 720A?▾
Both are rated 370 VA with a 1,250V C.T. secondary. The 720 has a 115 VAC primary; the 720A has a dual 117/234 VAC primary.
What certifications does it carry?▾
The 700 Series is CSA certified (209651), and the part is listed as RoHS and REACH compliant.
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