S3MT-60KWR480V S3MT-Series 3-Phase
Input and Output Transformers
Owner’s Manual
Models: S3MT-30KWR480V, S3MT-60KWR480V
WARRANTY REGISTRATION
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1111 W. 35th Street, Chicago, IL 60609 USA • tripplite.com/support
Copyright © 2021 Tripp Lite. All rights reserved.
Introduction
Tripp Lite’s S3MT-30KWR480V and S3MT-60KWR480V are 480V wrap-around models that include two transformers in one enclosure: a 480V (Delta) to 208V (Wye) input isolation step-down transformer and a 208V (Wye) to 480V (Wye) output auto step-up transformer.
The input isolation transformer mitigates utility line surges and spikes while protecting the UPS. The output autotransformer is designed to support 480V (Wye) IT loads. These models have built-in circuit breakers to prevent dangerous circuit overloads. Four ball-bearing fans for S3MT-30KWR480V and eight ball-bearing fans for S3MT- 60KWR480V maintain quiet operation and help to dissipate transformer heat. An overheat-sensing relay and thermal switch, combined with an LED light in the front panel, provide over-temperature warning and overheating protection. The UPS system’s small footprint and quiet acoustic profile enable installations with minimal space and noise impact. All transformer models feature stainless steel housings with front panels similar to the S3M-Series 208V 3-Phase UPS line.
| UPS Model | Series Number | Capacity | Description |
| S3MT-30KWR480V (Not compatible with SUT2OK or SUT3OK UPS) |
AG-0511 | 30kW | input Transformer: 480V to 208V Isolation Step-Down Transformer Output Transformer: 208V to 480V Auto Step-Up Transformer |
| S3MT-60KWR480V (Not compatible with SUT4OK or SUT6OK UPS) |
AG-0512 | 60kW | input Transformer: 480V to 208V Isolation Step-Down Transformer Output Transformer: 208V to 480V Auto Step-Up Transformer |
Typical applications
4-Wire (3Ph+N+PE) IT equipment loads in government, manufacturing, hospitals, industrial settings, and corporate settings that have 480V electrical mains and 480V IT loads.
Key Features
- The input step-down transformer provides 480V (Delta) to 208V/120V (Wye) isolation protection to the UPS input
- The output autotransformer provides 208V (Wye) to 480V (Wye) step-up to support 480V IT loads
- Circuit Breakers at the output of the input transformer and the input of the output transformer
- Overheating warning and protection
- 95.2% to 97.5% efficiency
- Wide input voltage and frequency operating range: Voltage: -20% to +25% @ 100% load and 40-70 Hz
- Insulation class: 180°C material
- Reliability-tested according to ISTA-3B for vibration, shock, drop (tip test)
- UL and CSA TUV certifications
- Rugged stainless steel housing shipped ready for installation
- 2-year warranty
Typical Configurations
The 480V Wrap-Around (WR) Transformer includes both the input (T-in) and output (T-out) transformers in one enclosure.
These 480V Transformers may be purchased separately or as part of a kit model with a Tripp Lite S3M Series 3-Phase UPS:
| Wrap-Around Transformer Models | Maximum Constant Load |
Compatible with 208V 3Ph UPS |
Kit Models: UPS + Transformer | ||
| Kit Models | Kit Models Include | ||||
| 480V | S3MT-30KWR480V | 30kW | 20-30kW UPS (Not compatible with SUT2OK or SUT30K) |
S3M30K-30KWR4T | S3M3OK UPS + S3MT-30KWR480V |
| S3MT-60KWR480V | 60kW | 50 60kW UPS (Not compatible with SUT4OK or SUT60K) |
S3M50K-60KWR4T | S3M5OK UPS + S3MT-60KWR480V |
|
| S3M60K-60KWR4T | S3M6OK UPS + S3MT-60KWR480V |
||||
Important Safety Warnings
SAVE THESE INSTRUCTIONS
This manual contains important instructions for models S3MT-30KWR480V and S3MT-60KWR480V that should be followed during the installation and maintenance of the transformer and UPS.
CAUTION! Risk of electrical shock! Hazardous live parts inside this unit are energized from the transformer even when the breaker is turned off.
WARNING! The unit is intended for installation in a controlled environment.
CAUTION! A transformer can present a risk of electric shock and a high short circuit current. The following precaution should be observed when working on the transformer:
- Remove watches, rings, or other metal objects.
- Use tools with insulated handles.
To reduce the risk of electric shock, disconnect the transformer and UPS from the main supply before performing maintenance or service.
Servicing of the 3-phase transformer and UPS should be performed by Tripp Lite certified personnel with knowledge of the 3-phase transformer and UPS and all required precautions.
The transformer is extremely heavy. Caution should be taken in moving and positioning equipment. The instructions contained within this manual are important and should be closely followed at all times during installation and follow-up maintenance of the 3-phase transformer and UPS.
CAUTION!
The transformer has a dangerous level of heat. If the transformer’s front-panel red LED indicator is on, the unit’s outlets may have a dangerous level of heat.
All servicing on this equipment must be carried out by Tripp Lite-certified service personnel.
Before conducting any maintenance, repair, or shipment, first, ensure everything is turned off completely and disconnected.
Special Symbols – The following symbols are used on the transformer to warn you of precautions:
RISK OF ELECTRIC SHOCK – Observe the warning that a risk of electric shock is present.
CAUTION – REFER TO OWNER’S MANUAL for information regarding important operating and maintenance instructions.
SAFE GROUNDING TERMINAL – Indicates THE primary safe ground.
Installation
Mechanical Data
Physical Requirements
Leave space around the cabinet for operation and ventilation (Figure 3-1):
- Leave at least 23.6 in. (600 mm) space in the front for ventilation
- Leave at least 20 in. (500 mm) space at the right and left for the operation
- Leave at least 20 in. (500 mm) space at the back for ventilation
Package Inspection
- Don’t lean the transformer cabinet when removing it from the packaging.
- Check the appearance to see if the transformer cabinet was damaged during transport. Do not power on the transformer cabinet if any damage is found. Contact the dealer immediately.
- Check the accessories against the packing list and contact the dealer in case of missing parts.
Unpacking the UPS
- Hold the sliding plate steady. Cut and remove the binding straps (Figure 3-2).
- Remove the plastic bag and the outer carton (Figure 3-3).
- Remove the foam packing material and the beveled pallet (Figure 3-4).
- Remove the screws securing the cabinet to the pallet (Figure 3-5).
- Lift the cabinet with a forklift and remove the packing pallets (Figure 3-6).
Package Contents
| Contents | TL P/N | S3MT-30KWR480V | S3MT-60KWR480V |
| Input and Output Transfers in One Cabinet | 1 | 1 | |
| Owner’s Manual | 933D04 | 1 | 1 |
| Bottom Skirts | 103922A | 2 | 2 |
| Bottom Skirts | 103923A | 2 | 2 |
| Screws for Skirts | 3011C3 | 24 | 24 |
Cabinet Overview
| 1 Output Transformer Over-Temperature Alarm LED | 6 Output Transformer Breaker with Trip |
| 2 Input Transformer Over-Temperature Alarm LED | 7 Input Transformer Cabling Terminal |
| 3 Output Transformer Cooling Fans | 8 Output Transformer Cabling Terminal |
| 4 Input Transformer Cooling Fans | 9 Bottom Entry Knockouts (for Power Cable Entry and Exit) |
| 5 Input Transformer Breaker with Trip | |
Power Cables
The cable design shall comply with the voltages and currents provided in this section, and in accordance with local electrical codes.
WARNING!
UPON STARTUP, ENSURE YOU ARE AWARE OF THE LOCATION AND OPERATION OF THE EXTERNAL ISOLATORS CONNECTED TO THE UPS INPUT/BYPASS SUPPLY OF THE UTILITY DISTRIBUTION PANEL.
ENSURE THESE SUPPLIES ARE ELECTRICALLY ISOLATED AND POST ANY NECESSARY WARNING SIGNS TO PREVENT INADVERTENT OPERATION.
Cable Sizes
| UPS Model | Cable Sizes (THHW wiring at 75°C) | |||||||
| AC Input | AC Output | Neutral | Grounding | |||||
| Gauge | Torque | Gauge | Torque | Gauge | Torque | Gauge | Torque | |
| S3MT- 30KWR480V | Input transformer | |||||||
| 6AWG Max. 3 AWG |
6.5N•m | 3 AWG Max. 3 AWG |
6.5N•m | 3 AWG Max. 3 AWG |
6.5N • m | 3 AWG Max. 3 AWG |
6.5N •rn | |
| Output transformer | ||||||||
| 6AWG Max. 3 AWG |
6.5N•m | 3 AWG Max. 3 AWG |
6.5N •rn | 3 AWG Max. 3 AWG |
6.5N •rn | 3 AWG Max. 3 AWG |
6.5N•m | |
| UPS Model | Cable Sizes (THHW wiring at 75°C) | ||||||||
| AC Input | AC Output | Neutral | Grounding | Lug | |||||
| Gauge | Torque | Gauge | Torque | Gauge | Torque | Gauge | Torque | ||
| S3MT- 60KWR480V | Input transformer | ||||||||
| 50mm2 Max. 50mm2x2 |
25N•m | 50mm2 x2 Max. 50mm2 x2 |
25N•m | 70mm2x2 Max. 70mm2x2 |
25N•m | 50mm2 Max. 50mm2 x2 |
25N •rn | M8 | |
| Output transformer | |||||||||
| 50mm2 Max. 50mm2x2 |
25N•m | 50mm2 x2 Max. 50mm2 x2 |
25N•m | 70mm2x2 Max. 70mm2x2 |
25N •rn | 50mm2 Max. 50 mm2 x2 |
25N •rn | M8 | |
Input and Output Transformer-to-UPS Connection Line Diagram
Connections are shown below for the cabinet with a built-in input isolator transformer, output autotransformer, and breakers with trip and fault LED.
Multiple Transformer Connections
WARNING:
The input transformer (T-in) output neutral is not bonded to the chassis ground. Please provide a means to connect the transformer chassis ground to the transformer output neutral.
Note: The transformer chassis ground must be connected to the earth ground.
IMPORTANT: You may view and/or download this manual from the tripplite.com website to view the cable connections in colors.
S3MT-30KWR480V Connections for 20kVA to 30kVA 208V UPS Systems
Note: This transformer is not compatible with SUT20K and SUT30K UPS models. 
Transformer Cabinet
Note: The transformer input is Delta 3-Wire (3Ph + Ground) and the output transformer is Wye 4-Wire (3Ph + N + Ground).
S3MT-60KWR480V Connections for 50kVA or 60kVA UPS Systems
Note: This transformer is not compatible with SUT40K and SUT60K UPS models.
WARNING:
The input transformer (T-in) output neutral is not bonded to the chassis ground. Please provide a means to connect the transformer chassis ground to the transformer output neutral.
Note: The transformer chassis ground must be connected to the earth ground.
IMPORTANT: You may view and/or download this manual from the tripplite.com website to view the cable connections in colors.
Transformer Cabinet
Note: Transformer input is Delta 3-Wire (3Ph + Ground) and output transformer is Wye 4-Wire (3Ph + N + Ground).
Operation
Over-Temperature Protection
Over-Temperature Warning LED Light (Red)
The transformer includes two warning LED lights on the top portion of the front panel: one light for the input transformer and one light for the output transformer. The corresponding warning light will turn ON when the secondary side of the input (T-in) or when the primary side of the output (T-out) transformer reaches a temperature of 160°C ± 5°C, i.e. a range of 155°C to 165°C (311°F to 329°F). The warning light turns OFF when the transformer cools to a temperature of 125°C ± 5°C, i.e. a range of 120°C to 130°C (248°F to 266°F).
Over-Temperature Protection Relay and Thermal Switch
The transformers include an over-temperature protection relay and thermal switch on the secondary sides of the input (T-in) and on the primary side of the output (T-out) transformer to protect the transformer from overheating.
- Input Transformers (T-in): If the secondary side of the (T-in) input transformer reaches temperatures of 160°C ± 5°C, i.e. a range of 155°C to 165°C (311°F to 329°F), and over-temperature protection relay and the thermal switch will activate and will open the breaker on the secondary side of the transformer. Once the transformer temperature has cooled down to 125°C ± 5°C, i.e. a range of 120°C to 130°C (248°F to 266°F) the warning LED light will turn OFF, and you may manually Reactivate (close) the output breaker on the transformer to restart normal operation.
- Output Transformers (T-out): If the primary side of the (T-out) output transformer reaches temperatures of 160°C ± 5°C, i.e. a range of 155°C to 165°C (311°F to 329°F), and over-temperature protection relay and the thermal switch will activate and will open the breaker on the primary side of the transformer. Once the transformer temperature has cooled down to 125°C ± 5°C, i.e. a range of 120°C to 130°C (248°F to 266°F), the warning LED light will turn OFF, and you may manually re-activate (close) the input breaker on the transformer to restart normal operation.
Specifications
| Models | S3MT-30KWR480V | S3MT-60KWR480V | |
| Description | Two 30kW Transformer in one Cabinet: Input Isolation Transformer (T-In) 480V Input (Delta) to 208V Output (Wye) Transformer, and Output Auto Transformer (T-Out) 208V (Wye) Input to 480V (Wye) output |
Two 60kW Transformer in one Cabinet: Input IsolationTransformer (T-In) 480V Input (Delta) to 208V Output (Wye) Transformer, and Output Auto Transformer (T-Out) 208V (Wye) Input to 480V (Wye) output |
|
| KVA/kW Ratings for Input (T in) and Output (T-out) Transformers | 30kVA/30kW | 60kVA/30kW | |
| Transformer Type | Dry-Type | ||
| INPUT SPECS of BOTH TRANSFORMERS | |||
| Input Transformer(T-In) | T-in Input Voltage | 480V | 480V |
| T-in Input Voltage Range | -45%,+25%) for 40 % load (-20%,+25%) for 100 % load |
(-45%,+25%) for 40 % load (-20%,+25%) for 100 % load |
|
| T-in Input Amp(s) | 51A | 101A | |
| T-in Input No. Of Phases | 3PH | 3 PH | |
| T-in Input Connections | 3-Wire (L1, L2, L3 + PE) | 3-Wire (L1, L2, L3 + PE) | |
| T-in AC Input Configuration | Delta | Delta | |
| T-in !put Connection Type | Copper Bar | Copper Bar | |
| T-in AC Input Frequency | 50/60 | 50/60 | |
| T-in Frequency Range | 40/70 Hz | 40/70 Hz | |
| T-in Voltage Selection | N/A | WA | |
| Voltage Drop Ratio: Output with no load to output with Full Load | 3% | ||
| T-In Input Isolation | Yes | ||
| T-in Input Inrush Current | d010A (10 ms) | I 920A (10 ms) | |
| Output Transformer(T-Out) | T-out Input Voltage Range | (-45%,+25%) for 40 % load (-20%,+25%) for 100 % load | |
| T-out Input Voltage | 208V | ||
| T-out Input Amp(s) | 87A | 173A | |
| T-out No. Of Phases | 3PH | 3PH | |
| T-out Input Connections | 4-Wire (L1, L2 L3 + N + PE) | ||
| T-out AC Input Configuration | WYE | ||
| T-out Input connection type | Copper Bar | Copper Bar | |
| T-out AC Input Frequency | 50/60 | 50/60 | |
| T-out Frequency Range | 40/70 Hz | 40-70 Hz | |
| T-out Voltage Selection | N/A | WA | |
| T-out Input Isolation | No | ||
| T-out Input Inrush Current | 1010A (10 ms) | 2020A (10 ms) | |
| Models | S3MT-30KWR480V | S3MT-60KWR480V | |
| T-out Input Isolation | |||
| Input Transformer(T-In) | T-in AC Output Voltage (V) | 208V | 208V |
| T-in AC Output Amps | 113A | 225A | |
| T-in Output No. Of Phases | 3PH | 3PH | |
| T-in Output Connections | 4-Wire (L1, L2, L3 +N + PE) | ||
| T-in AC Output Configuration | Me | Me | |
| T-in Connection Type | Copper Bar | Copper Bar | |
| T-in Output Breaker Rating | 125A | 250A | |
| Output Transformer(T-Out) | T-out AC Output Amps | 36A | 72A |
| T-out output No. Of Phases | 3PH | 3PH | |
| T-Out Output Connections | 4-Wire (L1, L2, L3 + N + PE) | ||
| T-out AC Output Configuration | Me | Me | |
| T-out Connection Type | Copper Bar | Copper Bar | |
| T-in Output Breaker Rating | 125A | 250A | |
| Operation | |||
| Over-Temperature Warning LED Light (Red) | Turns ON at 160°C±-5°C (155°C/311°F to 165°C/329°F) and turns OFF at 125°C ±5°C (120°C/248°F to 130°C/266°F) |
||
| Over-Temperature Protection Reset Device | T-in: Input Transfomer •Transfomer output/ secondary will be OFF (Breaker opens) at 160°C ±5°C (155°C/311°F to 165°C/329°F). •You may turn ON (close) output breaker manually when the LED Light turns OFF. •The warning Light will turn off at 125°C ±5°C (120°C/248°F to 130°C/ 266°F), at which time you may close the breaker manually to re-start operations. T-out: Output Transformer •Transformer input/primary will be OFF (Breaker opens) at temperatures of 160°C ±5°C (155°C/311°F to 165°C/329°F). •You may turn ON (close) input breaker manually when the LED light turns OFF. •The Warning LED Light will turn off at 125°C ±5°C (120°C/248°F to 130°C/ 266°F), at which time you may close the breaker manually to re-start operations. |
||
| Insulation Class | 180°C | ||
| Temperature Rise | 125°C | ||
| T-in Efficiency @ Full Load | 95.% | 97.% | |
| T-in Efficiency @ Half Load | 98.% | 98.% | |
| T-out Efficiency @ Full Load | 95.% | 97.% | |
| T-out Efficiency @ Half Load | 98.% | 98.% | |
| Models | S3MT-30KWR480V | I S3MT-60KWR480V | |
| Physical Information | |||
| Unit Height (Inches/cm) | 63/160 | ||
| Unit Width (Inches/cm) | 23.6/60 | ||
| Unit Depth (Inches/cm) | 33.5/85.1 | ||
| Unit Weight (Lbs./Kg) | 961/436 | 1398/634 | |
| Floor Loading | 855 kg/m2 | 1243 kg/m2 | |
| Unit Carton Height (Inches/cm) | 70.9/180.1 | ||
| Unit Carton Width (Inches/cm) | 27.6/70.1 | ||
| Unit Carton Depth (Inches/cm) | 37.8/96 | ||
| Unit Carton Weight (Lbs./Kg) | 1058/479.9 | 1510/684.9 | |
| Tip-n-Tell Label Required (Y/N) | Yes | ||
| Audible Noise (ENG) | 65dB max | ||
| RH Humidity, Non-Condensing | 95% | ||
| Online Thermal Dissipation at Full Load, (Btu/Hr) | 9829 | 7167 | |
| Storage Temperature (ENG) | -15 — 60C | ||
| Operating Temperature (ENG) | 0°C — 40 °C | ||
| Operating Elevation | <1000 meters for nominal power (over 100 m, the power de-rating is 1% per 100 m) |
||
| Mechanical | |||
| Transformer Winding | Aluminum | ||
| Cabinet Material | Cold Rolled Galvanized Steel (SGCC) | ||
| Cabinet Color | RAL 9011 | ||
| Fan (Type / Quantity) | 4x Ball Bearing, 120 mm (576 total CFM) |
8x Ball Bearing, 120 mm (1152 total CFM) |
|
| Reliability | |||
| Vibration | ISTA-3B | ||
| Shock | ISTA-3B | ||
| Drop | ISTA-3B (Tip Test) | ||
| Agency Approvals | |||
| Approving Agency | cTUVs | ||
| Agency Standard Tested | UL 1778 5th Edition | ||
| Canadian Approvals | CSA 22.2-107.3-14 | ||
| CE Approvals | N/A | ||
| EMI Approvals | N/A | ||
| RoHS/REACH | Yes | ||
Storage
Before storing the isolation transformer, ensure all connections have been disconnected and all breakers are turned OFF.
Replace all input or output access covers to avoid damaging any contacts.
The transformer must be stored in a clean, secure environment with temperatures between 5°F to 140°F (-15°C to 60°C) and relative humidity less than 90% (non-condensing).
Store the transformer in its original shipping container, if possible.
WARNING: The transformer(s) is/are very heavy. Before storing the transformer, make sure to take into account the floor loading (kg/m²) requirements listed in section 5. Specifications under “Physical Info” to store safely.
Warranty and Regulatory Compliance
Limited Warranty
Seller warrants this product, if used in accordance with all applicable instructions, to be free from original defects in material and workmanship for a period of 2 years from the date of initial purchase. If the product should prove defective in material or workmanship within that period, Seller will repair or replace the product, in its sole discretion. Service under this Warranty includes parts only. International customers should contact Tripp Lite support at intlservice@tripplite.com. Continental USA customers should contact Tripp Lite Customer Service at 773-869-1234 or visit tripplite.com/support/help THIS WARRANTY DOES NOT APPLY TO NORMAL WEAR OR TO DAMAGE RESULTING FROM ACCIDENT, MISUSE, ABUSE OR NEGLECT. SELLER MAKES NO EXPRESS WARRANTIES OTHER THAN THE WARRANTY EXPRESSLY SET FORTH HEREIN. EXCEPT TO THE EXTENT PROHIBITED BY APPLICABLE LAW, ALL IMPLIED WARRANTIES, INCLUDING ALL WARRANTIES OF MERCHANTABILITY OR FITNESS, ARE LIMITED IN DURATION TO THE WARRANTY PERIOD SET FORTH ABOVE; AND THIS WARRANTY EXPRESSLY EXCLUDES ALL INCIDENTAL AND CONSEQUENTIAL DAMAGES. (Some states do not allow limitations on how long an implied warranty lasts, and some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations or exclusions may not apply to you. This Warranty gives you specific legal rights, and you may have other rights, which vary from jurisdiction to jurisdiction.)
Tripp Lite; 1111 W. 35th Street; Chicago IL 60609; USA
WARNING: The individual user should take care to determine prior to use whether this device is suitable, adequate or safe for the use intended. Since individual applications are subject to great variation, the manufacturer makes no representation or warranty as to the suitability or fitness of these devices for any specific application.
Product Registration
Visit tripplite.com/warranty today to register your new Tripp Lite product. You will be automatically entered into a drawing for a chance to win a FREE Tripp Lite product!*
* No purchase necessary. Void where prohibited. Some restrictions apply. See the website for details.
WEEE Compliance Information for Tripp Lite Customers and Recyclers (European Union)
Under the Waste Electrical and Electronic Equipment (WEEE) Directive and implementing regulations, when customers buy new electrical and electronic equipment from Tripp Lite they are entitled to:
- Send old equipment for recycling on a one-for-one, like-for-like basis (this varies depending on the country)
- Send the new equipment back for recycling when this ultimately becomes waste
Use of this equipment in life support applications where the failure of this equipment can reasonably be expected to cause the failure of the life support equipment or to significantly affect its safety or effectiveness is not recommended.
Tripp Lite has a policy of continuous improvement. Specifications are subject to change without notice. Photos and illustrations may differ slightly from actual products.
1111 W. 35th Street, Chicago, IL 60609 USA • tripplite.com/support
Documents / Resources
 |
TRIPP-LITE S3MT-60KWR480V S3MT-Series 3-Phase Input and Output Transformers [pdf] Owner's Manual S3MT-30KWR480V, S3MT-60KWR480V, S3MT-60KWR480V S3MT-Series 3-Phase Input and Output Transformers, S3MT-60KWR480V, S3MT-Series 3-Phase Input and Output Transformers |
