Hammond HX54A 240:120 Potential Transformer, 100VA Thermal Rating
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Create Free Business AccountKey Features
- 240:120 ratio for 240 V nominal line voltage systems
- 1.2% accuracy over a 0-20 VA burden; thermal rating 100
- Used with 150 V full scale AC voltmeters
- Primary insulated for 4.0 kV rms test; for L.V. switchgear and motor control
- 50/60 Hz; 240 V nominal may be exceeded by 25% at 60 Hz
- Open "Type H" construction; 55 degree C rise, Class 105 insulation
- CSA certified (209651); RoHS and REACH compliant
The HX54A is an instrument potential (voltage) transformer from the EX-HX-VT series with a 240:120 ratio for 240 V nominal line voltage systems. Used with a 150 Volt full scale AC voltmeter, it lets electricians and panel builders measure line voltage on low-voltage switchgear and motor control equipment.
It is rated 1.2% accuracy over a 0-20 VA burden, with a thermal rating of 100 (listed as 100VA in the short description). That is a higher burden and thermal rating than the VT55A, the series' other 240:120 model. The primary is insulated for a 4.0 kV rms test, and the transformer operates at 50/60 Hz. For 60 Hz operation, the 240 V nominal line voltage may be exceeded by 25%.
Construction is open, "Type H", with a 55 degree C rise, Class 105 insulation system. The series is CSA certified (209651). Overall dimensions are A 3.75 in (95 mm), B 4.00 in (102 mm) and C 3.13 in (80 mm), with mounting centers of 3.13 in (80 mm) by 3.13 in (80 mm) and mounting slots of 0.22 in (6 mm) by 0.44 in (11 mm).
The HX54A has a listed shipping weight of 6.7 lbs (3.04 kg), with the series table giving 6.6 lb. It is RoHS and REACH compliant.
Ideal For
- Voltage metering on 240 V systems with a 150 V voltmeter
- Low-voltage switchgear instrumentation
- Motor control center voltage monitoring
Mounting
| Mounting Slot G | 0.22 in (6 mm) |
| Mounting Slot H | 0.44 in (11 mm) |
| Mounting Center D | 3.13 in (80 mm) |
| Mounting Center E | 3.13 in (80 mm) |
Overview
| Series | EX-HX-VT Series (HX) |
| Product Type | Potential transformer, instrument |
| Short Description | VOLTAGE TRANS 100VA 240 |
Dimensions
| Overall Dimension A | 3.75 in (95 mm) |
| Overall Dimension B | 4.00 in (102 mm) |
| Overall Dimension C | 3.13 in (80 mm) |
Electrical
| VA | 0-20 |
| Accuracy | 1.2% |
| Frequency | 50/60 Hz |
| Thermal Rating | 100 |
| Ratio (Pri./Sec.) | 240:120 |
| Meter Compatibility | 150 Volt full scale A.C. voltmeters |
| Nominal Line Voltage | 240 |
| Overvoltage Allowance | Nominal 240 V may be exceeded by 25% for 60 Hz operation |
| Primary Insulation Test | 4.0 KV rms |
Identifiers
| UPC | 623980952796 |
| UNSPSC | 39121301 |
Packaging & Shipping
| Shipping Weight | 6.7 lbs (3.04 kg) |
| Ship Wt. (Series Table) | 6.6 lb |
Construction & Finish
| Construction | Open construction - "Type H" |
| Insulation System | 55 degree C rise, Class 105 |
Compliance & Certifications
| CSA | Certified (209651) |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
What is the HX54A used for?▾
It is used with 150 Volt full scale AC voltmeters to measure the voltage of 240 V systems, and is suitable for L.V. switchgear and motor control use.
What is the ratio and accuracy?▾
240:120 with 1.2% accuracy over a 0-20 VA burden.
How does the HX54A differ from the VT55A?▾
Both are 240:120, 1.2% models. The HX54A is rated 0-20 VA with a thermal rating of 100, while the VT55A is rated 0-8 VA with a thermal rating of 50; the HX54A is also larger (A 3.75 in vs 3.00 in).
Can the line voltage exceed 240 V?▾
For 60 Hz operation, the nominal 240 V line voltage may be exceeded by 25%.
What certifications does it have?▾
The series is CSA certified (209651), and the HX54A is RoHS and REACH compliant.
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