Hammond 178MG1800 1800VA Medical Grade Isolation Transformer, 120V
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Create Free Business AccountKey Features
- 1800VA medical grade straight isolation, 120 VAC to 120 VAC, 50/60 Hz
- Leakage current under 100 uA via Faraday shield; floating AC output reduces noise coupling
- cULus listed to UL 60601-1 (1st Ed.) and CAN/CSA-C22.2 No. 601.1-M90 (R2005)
- Hospital grade NEMA 5-20P input on 12/3 SJTW / 6ft. cord
- 3 hospital grade Duplex 5-15R receptacles
- Input 15.63 A, output 15.00 A, 96% (min) full load efficiency
- Switch / circuit breaker combo plus automatic thermal cut out
- Vented 14 gauge steel housing, white powder paint, carrying handles
The Hammond 178MG1800 is a 1800VA medical grade plug-in line isolation transformer for straight isolation, 120 VAC to 120 VAC, rated 50/60 Hz. It is intended for non-patient connected indoor applications where sensitive electronics need protection, such as high end audio and studio use, medical electronics, and high end test equipment or laboratories. It is not intended to supply power to life support appliances.
Each unit provides complete line isolation and noise filtering and uses a Faraday shield to keep leakage current under 100 microamps, below UL60601-1 requirements. The floating AC output reduces noise coupling. The 178MG1800 is the 1800VA version, the highest capacity in the MG line. It draws 15.63 A and delivers 15.00 A at 120 VAC with 96% minimum full load efficiency, and it steps up to a NEMA 5-20P plug on a heavier 12/3 SJTW cord with three duplex receptacles.
Construction is a vented 14 gauge steel housing in white powder paint, with carrying handles, venting louvers and an external grounding stud with wingnut. Input is a hospital grade 3-wire grounded NEMA 5-20P plug on a 12/3 SJTW / 6ft. cord, and the output is 3 hospital grade Duplex 5-15R receptacles with North American pins. Protection comes from an on-off switch / circuit breaker combo plus a built in automatic thermal cut out.
The 178MG1800 is cULus listed to UL 60601-1 (1st Edition) and CAN/CSA-C22.2 No. 601.1-M90 (R2005), and is RoHS and REACH compliant. Every unit is 100% tested and inspected before packing. Input voltage tolerance is +/- 10%, and the shipping weight is 62 lbs (28.12 kg).
Ideal For
- High end audio / studio power isolation at 120V
- Medical electronics in non-patient connected indoor use
- High end test equipment and laboratory benches
- Reducing leakage current and noise to sensitive 120V electronics
Overview
| Series | 178, 240, 289, 298 "MG" Series; Straight Isolation (120 VAC to 120 VAC) |
| Description | Isolation transfortmer, medical grade, 1800VA, 120 VAC to 120 VAC, MG Series |
| Restriction | Not intended to be used to supply power to life support appliances |
| Intended Use | Non-patient connected indoor applications where protection of sensitive electronics is required |
| Product Type | Medical grade plug-in line isolation transformer |
| Short Description | MEDICAL LINE ISOLATION, 1800VA |
Dimensions
| Drawing Dimensions (Front View) | 7.150 in (181.60 mm); 7.702 in (195.62 mm) |
| Drawing Dimensions (Top/side Views) | 12.399 in (314.94 mm); 13.528 in (343.61 mm); 8.815 in (223.90 mm); 8.717 in (221.41 mm) |
Electrical
| Frequency | 50/60 Hz |
| Output Type | Floating AC output for reduced noise coupling |
| Power Rating | 1800 VA |
| Configuration | Straight isolation (120 VAC to 120 VAC) |
| Input Current | 15.63 A |
| Input Voltage | 120 VAC |
| Output Current | 15.00 A |
| Output Voltage | 120 VAC |
| Leakage Current | < 100 uA |
| Full Load Efficiency | 96% (min) |
| Isolation & Filtering | Complete line isolation and noise filtering; Faraday shield reduces leakage currents below UL60601-1 requirements |
| Input Voltage Tolerance | +/- 10% |
Protection
| Switch / Breaker | On-Off Switch / Circuit Breaker combo (Switch / CB - Pole 1 and Pole 2) |
| Thermal Protection | Built in automatic Thermal Cut Out |
Connections
| Receptacle Pins | North American (298G adaptor series offers international pinout adaptor plugs) |
| Output Receptacle | Duplex 5-15R (hospital grade) |
| External Grounding | External grounding stud with wingnut; potential equalization conductor |
| Cord Style / Length | 12/3 SJTW / 6ft. |
| Input Plug NEMA Type | 5-20P (hospital grade, 3-wire grounded) |
| Number Of Duplex Receptacles | 3 |
| Input Plug (Drawing Call-out) | 6 ft medical grade NEMA 5-20P plug |
Identifiers
| UPC | 623980513355 |
| UNSPSC | 39121301 |
| Part Number | 178MG1800 |
Packaging & Shipping
| Lifting Note | Series user guide notes some units exceed 18 kg (40 lb); use safe lifting practices and both integral handles |
| Shipping Weight | 62 lbs (28.12 kg) |
Construction & Finish
| Finish | White powder paint |
| Housing | Vented 14 gauge steel housing |
| Handling | Integral carrying handles; rubber feet |
| Ventilation | Venting louvers; 4 mm perforated holes |
Environmental & Protection
| Humidity | Not in excess of 95% RH (non-condensing) |
| Location | Indoor use, dry locations only |
| Hazardous Atmospheres | Not for use with flammable gases or accelerants such as anesthetic mixtures, oxygen or nitrous oxide |
| Operating Temperature | -15 to 55°C (5 to 131°F) |
| Storage & Transport Temperature | -20 to 65°C |
Compliance & Certifications
| Testing | Every unit 100% tested and inspected before packing |
| RoHS Compliant | Yes |
| Safety Listing | cULus Listed to UL 60601-1 (1st Edition) and CAN/CSA-C22.2 No. 601.1-M90 (R2005) |
| REACH Compliant | Yes |
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Frequently Asked Questions
Can the 178MG1800 be used with patient-connected medical equipment?▾
No. The MG Series is intended for non-patient connected indoor applications that protect sensitive electronics, and it is not intended to supply power to life support appliances.
What is the leakage current of the 178MG1800?▾
Leakage current is under 100 uA. A Faraday shield reduces leakage currents below UL60601-1 requirements.
What plug and outlets does the 178MG1800 have?▾
It has a hospital grade NEMA 5-20P input plug on a 12/3 SJTW / 6ft. cord and 3 hospital grade Duplex 5-15R receptacles. The user guide states units must be connected to comparable hospital grade plugs and receptacles to maintain grounding.
What are the input and output ratings?▾
Input is 120 VAC at 15.63 A; output is 120 VAC at 15.00 A; 1800VA at 50/60 Hz with 96% (min) full load efficiency.
What happens if it overloads or overheats?▾
If the breaker trips, unplug all loads, cycle the on/off switch to reset it and re-evaluate the total load. If the unit overheats, the built in thermal cut out removes power to the receptacles; unplug it and let it cool before restoring power.
What operating conditions does it need?▾
Indoor, dry locations only, operating between -15 and 55°C (5 to 131°F) and no more than 95% RH non-condensing, placed upright on its rubber feet with its ventilation unobstructed.
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