ULLTRA™ High Performance Transformers
Not all Energy Efficient Transformers are created equal
ULLTRA High Performance transformers are designed to deliver more
energy savings than any other transformer on the market. The result is a
high performing transformer that offers the highest efficiency in the industry
under either linear or non-linear loading and maintains these high efficiency
levels at not only 35% loading but over a wide load range.
Although other energy efficient transformers on the market may meet new,
more demanding standards such as NEMA Premium and CSL3, these
standards only restrict losses under linear loading and at 35% load levels.
When it comes to higher load levels and non-linear loading, other
transformers on the market can’t offer the same high efficiencies under
these conditions. ULLTRA High Performance transformers actually exceed
NEMA Premium efficiency levels at their peak performance loading of 50%.
Quicker PAYBACK PERIOD
Applications
A perfect solution for any application
where energy efficiency and lower life
cycle costs are critical – K-12 and
Higher Education, Government,
Healthcare, Commercial, Industrial
and LEED buildings.
Applications that expect heavier
loads such as Data Centers, Solar
and other Alternative Energy projects,
will benefit from ULLTRA Series
Transformers ability to maximize
savings under ANY load and for ANY
load profile.
Mirus offers eVALUATOR™, a proprietary and complimentary payback analysis
tool for transformers. By entering some simple data into the program it
calculates accurate payback and energy savings and takes into account the
effects of harmonics created by non-linear loading.
ULLTRA improves paybacks by allowing for ‘Right Sizing’. Right Sizing takes
into account that a transformer designed to maintain high efficiencies under
heavy and non-linear loading can be significantly smaller than one optimized for
light loading. The transformer can be sized to operate at heavier load levels,
where it is better utilized, without sacrificing energy efficiency. This not only
saves energy and the associated operating costs, but also saves on initial costs.
In addition, smaller transformers require less materials, such as steel and
copper, providing further environmental benefit.
Paybacks are particularly good in applications where both light and heavy
loading can be expected. For example, transformers used for alternative energy
sources, such as Solar Power, will be nearly fully loaded during peak daylight
hours but very lightly loaded at night. Often incentives associated with Utility
purchase agreements include much higher rates for the electricity they buy,
further justifying ULLTRA’s use.
Real-world Tested. REAL-WORLD PERFORMANCE
Like all of Mirus’ products, ULLTRA High Performance Transformers undergo
rigorous real-world tests in Mirus’ own Harmonics & Energy Lab. Load profiles
are matched to real-world conditions. With the largest non-linear load bank in
the industry, Mirus can test transformers up to 225 kVA under full non-linear load
conditions to ensure the promised energy savings are realized.
International Inc.
Features
Mirus-engineered GREEN DESIGN
• Highest efficiencies in the
industry at any load profile and
at all load levels
To maximize efficiencies at any load level or load profile, Mirus’ ULLTRA
High Performance Transformers feature a unique core configuration that
substantially reduces the core losses without having to lower flux density
and provides both low core losses and copper losses.
• Lowest Life Cycle Costs for best
paybacks and improved bottom
line
• H1E improves reliability by
reducing voltage distortion
• Exceeds CSL-3 and NEMA
Premium requirements in a
wider load range
• Meets NEMA TP-1 efficiencies
under non-linear loading
• Lower losses minimize energy
waste and protect the
environment by reducing
greenhouse gas emissions
• Energy savings are realized even
during peak load conditions
when environmental impact is
greatest
• Contributes to LEED (Leadership
in Energy Efficient Design) in
Energy & Atmosphere and
Innovation & Design categories
• Performance validated through
linear and non-linear load testing
in Mirus’ Harmonics & Energy
Lab
• Inrush magnetization currents
are the lowest in the industry
• Lower audible noise levels: 3dB
to 5dB below NEMA ST-20
requirements
Other design features include: lower audible noise well below standard
limits and much lower inrush currents. Since ULLTRA Series do not need to
be oversized to reach high K-Ratings, its unique core design allows for
smaller cores with even lower inrush currents than standard transformers.
ULLTRA™ – Ultra Low Loss TRAnsformer
• Optimized for any load level making ULLTRA the only transformer
ideally suited for both light or heavy loading conditions
• Linear load losses are a full 30% lower than the already low levels
defined by NEMA TP-1
• Efficiencies meet NEMA Premium levels at the mandated 35% loading
and even exceed these levels at the transformer’s peak design loading
of 50%
• Harmonic losses are also reduced to ensure efficiencies meet NEMA
TP-1 requirements even under ‘real world’ non-linear loading
• Inrush currents (< 8x rated) and audible noise (3dB lower than
standard) are extremely low
• Ideal for Solar Power or other applications where transformer loading
varies widely and electricity rates are high
ULLTRA-H1E™ – Harmonic Mitigating Transformer
In applications where non-linear loading is expected to be severe, the
ULLTRA-H1E combines the proven harmonic mitigating properties of Mirus’
Harmony™ HMT line with superior energy efficiency, low inrush and low
audible noise found in the ULLTRA design.
• Voltage distortion (flat-topping) is minimized by cancelling zero
sequence fluxes within the secondary windings and eliminating
circulating currents in the primary windings
• Treats triplen harmonics (3rd and 9th) within the transformer and 5th and
7th upstream
• The highest efficiency harmonic mitigating transformer from the company
that first introduced HMT’s to the market in the early 1990’s
75kVA Transformer
Comparison under
Linear Load
ULLTRAtm Series
Efficiency
Sizes
Primary
Style
Weight 
lbs [kg]
15
30
45
75
112.5
150
225
300
500
750
MT2
MT2
MT3
MT3
MT4
MT4
LT1
LT2
LT3
LT3
250 [115]
375 [170]
500 [227]
850 [386]
1000 [454]
1200 [544]
1800 [820]
2500 [1135]
3175 [1440]
4250 [1928]
kVA Case
 Approximate Values
Linear
35% Load*
50% Load
97.90%
98.25%
98.39%
98.60%
98.74%
98.81%
98.95%
99.00%
99.09%
99.16%
97.96%
98.35%
98.45%
98.65%
98.82%
98.85%
99.00%
99.07%
99.20%
99.28%
* NEMA Premium & CSL3 specs
Impedance
K-13
Non-Linear No-Load
50% Load** Losses (W)
97.0%
97.5%
97.7%
98.0%
98.2%
98.3%
98.5%
98.6%
98.7%
98.8%
75
115
150
225
320
400
560
710
1100
1550
ULLTRA H1E
Zero Sequence
Zo
Xo
3 Phase
Short Circuit
<0.95%
<0.95%
<0.95%
<0.95%
<0.95%
<0.95%
<1.0%
<1.0%
<1.5%
<2.0%
<0.3%
<0.3%
<0.3%
<0.3%
<0.3%
<0.3%
<0.5%
<0.5%
<0.5%
<1.0%
2.0-3.5%
2.0-3.5%
2.0-3.5%
2.0-3.5%
2.5-5.0%
2.5-5.0%
3.0-6.0%
3.0-6.0%
4.5-7.0%
5.0-8.0%
** Equivalent to NEMA TP-1
'MT' Style Enclosure
'LT' Style Enclosure
W
W
D
D
General Specifications:
Primary
3-Phase, 3 wire, 60Hz
Secondary
3-Phase, 4-wire, 60Hz
Operating Temp. Rise
115oC
Insulation Class
220oC
Primary Taps
15kVA (and all 208V):
+ 1 x 5%
30kVA - 300kVA: +2 x 2.5%, - 4 x 2.5%
500kVA - 750kVA: + 2 x 2.5%
K-Factor Rating (at 150oC rise)
13
Neutral Bus Ampacity
200% of phase current
Energy Efficiency (
H
H
Mtg.
W
Mtg.
D
Mtg.
W
Front View
Side View
Front View
Mtg.
D
Side View
†
see table )
Linear Load: Meets and/or exceeds
the US Department of Energy
Candidate Standard Level 3 (CSL-3)
efficiency requirements by ensuring
losses are 30% lower than NEMA TP-1.
Non-Linear Load: Exceeds NEMA
TP-1 efficiency requirements.
Magnetizing Inrush
< 8 times FL RMS
Winding Material
Copper
Dimensions
Case
Style
MT1
MT2
MT3
MT4
LT1
LT2
LT3
H (Height)
inches [mm]
29.00 [737]
38.00 [965]
45.00 [1143]
51.50 [1308]
59.00 [1499]
66.00 [1677]
75.00 [1905]
W (Width)
inches [mm]
16.75 [425]
21.50 [546]
26.00 [661]
32.00 [813]
39.50 [1003]
44.00 [1118]
48.50 [1232]
Mtg. Center W Mtg. Center D
D (Depth)
inches [mm]
inches [mm] inches [mm]
13.75 [349]
13.00 [330]
15.00 [381]
17.00 [432]
17.50 [445]
19.50 [495]
21.50 [546]
19.00 [483]
21.00 [534]
23.50 [597]
23.50 [597]
25.50 [648]
24.00 [610]
32.00 [813]
30.00 [762]
26.00 [660]
36.00 [915]
34.00 [864]
27.50 [699]
41.00 [1041]
39.00 [991]
Insulating Varnish Impregnation
Polyester Resin
Audible Sound Level
3dB to 5dB below NEMA ST-20
Enclosure
Type: Nema-3R, ventilated
Paint: Polyester powder coated
Colour: ANSI 61 Grey
Electrostatic Shield
Single, [double]
Product Code:
Transformer Type Secondary
Ultra Low Loss
L-L Voltage
Transformer
208, 480, 600
Applicable Standards
Electrostatic Shield
S = Single shield (Std. for ULL)
SS = Double shield
Options
ULL - dd - hhh - xxx - kVA - S - TRx - t - (o)
Angular
Primary
Primary kVA
Temperature
Displacement L-L Voltage
15, 30, 45, 75, Rise
30 (Std. for ULL)
208, 480, 600 112.5, 150, 225, TRB* = 115oC (Std.)
[ * Leave blank for TRB]
00 (Std. for Type H1E)
300, 500, 750
Type
H1E = Harmonic
Mitigating
[Leave blank for Std. ULL]
NEMA Premium, NEMA ST20,
NEMA TP1, NEMA TP2, CSA C9,
CAN/CSA-C802.2, DOE CSL-3
Options:
Over-Temp. Sensors
[170oC], [200oC]
Solid Bottom Plate
Available for 'MT' case only
C
Mirus International Inc. All specifications subject to change without notice.
MIRUS International Inc.
31 Sun Pac Blvd., Brampton, ON, Canada L6S 5P6
Tel: 905.494.1120 Fax: 905.494.1140
Toll Free: 1-888 TO MIRUS (888.866.4787)
www.mirusinternational.com
R
ULL-PS01-A7
Effective: August 2012
MIRUS International Inc.
31 Sun Pac Blvd., Brampton, Ontario, Canada L6S 5P6
I.
TYPICAL SPECIFICATION
ULLTRA™ & ULLTRA-H1E™
NEMA Premium® Ultra Low Loss TRAnsformer
PART 1 – GENERAL
1. SCOPE
A. NEMA Premium® copper-wound ultra low loss isolation transformer with a higher efficiency than that
required by NEMA Std. TP-1. Optimized for energy efficiency over a wide load range.
1. Meets NEMA Premium® and US Department of Energy proposed Candidate Standard Level CSL-3
efficiency.
2. Losses 30% lower than required at the defined NEMA TP-1 test point of 35% load.
3. Rated for K-13 load profile to supply without de-rating or significant degradation in efficiency, any
typical application where non-linear loads, such as computer equipment, are present.
4. Optional harmonic mitigating model with low zero phase sequence impedance
2. APPLICABLE DOCUMENTS AND REFERENCES
A. Federal Register – US Department of Energy, Office of Energy Efficiency and Renewable Energy. 10
CFR Part 430, July 29, 2004. Energy Conservation Program for Commercial and Industrial Equipment:
Energy Conservation Standards for Distribution Transformers; Proposed Rule.
B. NEMA Premium® Efficiency Transformer Program Guidelines
C. ANSI/NEMA ST 20 – Dry Type Transformers for General Applications.
D. ANSI/NEMA TP-1 – Guide for Determining Energy Efficiency for Distribution Transformers.
E. ANSI/NEMA TP-2 – Standard Test Method for Measuring the Energy Consumption of Distribution
Transformers.
F. IEEE C57.110-1998 – IEEE Recommended Practice for Establishing Transformer Capability When
Supplying Nonsinusoidal Load Currents.
G. IEEE-1100 – IEEE Recommended Practice for Powering and Grounding Electronic Equipment.
H. CSA C9 – Dry-Type Transformers.
I.
CAN/CSA-C802.2 – Minimum Efficiency Values for Dry-Type Transformers.
3. SUBMITTALS
A. Submit product specifications including the following:
1. Data sheets including
a. construction details with enclosure dimensions,
b. kVA rating, primary and secondary nominal voltages, voltage taps, unit weight,
c.
basic performance characteristics with insulation class, temperature rise, core and coil materials,
d. impedances,
e. audible noise levels
2. Dimensional drawings,
3. Inrush current (typical 3 cycle recovery)
4. Short circuit current data
5. Efficiency data
a. no load and full load losses per NEMA ST20,
b. efficiency data at 35%, 50%, 75% and 100% of nominal linear load,
 Mirus International Inc. [2012-08-13]
1-888-TO MIRUS
www.mirusinternational.com
Page 1 of 5
ULL-TS003-A0
MIRUS International Inc.
31 Sun Pac Blvd., Brampton, Ontario, Canada L6S 5P6
c.
TYPICAL SPECIFICATION
ULLTRA™ & ULLTRA-H1E™
NEMA Premium® Ultra Low Loss TRAnsformer
efficiency data at 35% of nominal linear load tested per NEMA TP-2,
d. efficiency data at 50% of nominal load with K-13 load profile.
B. Submit copy of non-linear test program description and sample test report for approval before
manufacturing.
C. Submit certified copies of the standard production tests required by NEMA standards ST-20 and TP2 for
each transformer for approval before shipment.
D. Submit certified type test results for non-linear load testing for each size of transformer ordered on the
project for approval before shipment
II.
PART 2 PRODUCTS
1. REQUIREMENTS
A. Acceptable Product and Manufacturer:
1. ULLTRA™ Isolation Transformer made by MIRUS International Inc.
2. No alternates or substitutions will be permitted unless they meet all the requirements of this
specification, including document submittal requirements and that they are submitted in sufficient time
to receive written approval by the engineer at least 10 days before bid closing.
B. Voltage and kVA Requirements:
1. Primary Voltage: [480][600][other] Volts
2. Secondary Voltage: [120/208][other] Volts
3. kVA rating: [15][30][45][75][112.5][150][225][300][500][750][other] kVA
4. System Frequency: 60 [50][other] Hertz
C. Basic Requirements:
1. Three-phase isolation transformer built to NEMA ST20 and relevant NEMA, UL, CSA and ANSI/IEEE
standards.
2. UL listed and CSA approved.
3. Common core construction.
4. Convection air-cooled.
5. Copper Windings.
6. Insulation Class: 220°C system, (15 kVA and 30 kVA transformers have 200°C insulation class).
7. Temperature rise: 115°C, [80°C] in a 40 degrees C maximum ambient.
8. K-rating: K-13 at 150°C rise.
9. Maximum magnetizing inrush current: < 8x full load rms
10. Taps: for 15kVA and all 208V primary: ±1 x 5% (1FCAN, 1FCBN); for 30kVA up to 300kVA: + 2 x
2.5%, - 4 x 2.5% (2FCAN, 4FCBN); for 500kVA to 750kVA: ±2 x 2.5% (2FCAN, 2FCBN).
11. Sound levels 3dB below NEMA Std. ST-20: max. 42dB up to 45 kVA, 47 dB from 75 to 150 kVA, 52
dB from 225 to 300 kVA, 57dB for 500 kVA, and 61 dB for 750 kVA.
12. Enclosure: NEMA 3R, ventilated, sprinkler-proof. [Other]. Colour: Grey
13. Anti-vibration pads shall be used between the core and the enclosure.
14. Single electrostatic shield: 60dB attenuation.
D. Key Requirements:
 Mirus International Inc. [2012-08-13]
1-888-TO MIRUS
www.mirusinternational.com
Page 2 of 5
ULL-TS003-A0
MIRUS International Inc.
31 Sun Pac Blvd., Brampton, Ontario, Canada L6S 5P6
TYPICAL SPECIFICATION
ULLTRA™ & ULLTRA-H1E™
NEMA Premium® Ultra Low Loss TRAnsformer
1. Secondary neutral connection rated at 200% of the rated secondary phase current
2. Maximum No Load losses shall not exceed:
15 kVA: 75 watts,
30 kVA: 115 watts,
45 kVA: 150 watts,
75 kVA: 225 watts,
112.5kVA: 320 watts,
150 kVA: 400 watts,
225 kVA: 560 watts,
300 kVA: 710 watts,
500 kVA: 1100 watts,
750 kVA: 1550 watts.
Submit for approval before shipment certified type test results for maximum no load losses for
each size of transformer ordered on the project.
3. Linear load efficiency at 35% shall ensure 30% less losses than that required by NEMA Std TP1
meeting NEMA Premium and DOE 10 CFR Part 430 CSL-3 efficiency requirements as tested per
NEMA TP-2. To ensure high efficiency over a wide load range, linearl load efficiency at 50% load
shall be higher than the efficiency at 35% load.
a. The following efficiency levels shall be met at 35% load:
15 kVA: 97.9%,
30 kVA: 98.25%,
45 kVA: 98.39%,
75 kVA: 98.6%,
112.5kVA: 98.74%,
150 kVA: 98.81%,
225 kVA: 98.95%,
300 kVA: 99.0%,
500 kVA: 99.09%,
750 kVA: 99.16%.
b. The following efficiency levels shall be met at 50% load range:
15 kVA: 97.96%,
30 kVA: 98.35%,
45 kVA: 98.45%,
75 kVA: 98.65%,
112.5kVA: 98.82%,
150 kVA: 98.85%,
225 kVA: 99.0%,
300 kVA: 99.07%,
500 kVA: 99.20%,
750 kVA: 99.28%.
Submit for approval before shipment certified type test results for linear load efficiency at 35%
and 50% load for each size of transformer ordered on the project.
4. Non-linear load efficiency under K-13 non-linear load at 50% load of nameplate rating shall meet
efficiency levels defined by NEMA TP-1:
15 kVA: 97.0%,
30 kVA: 97.5%,
 Mirus International Inc. [2012-08-13]
1-888-TO MIRUS
www.mirusinternational.com
Page 3 of 5
ULL-TS003-A0
MIRUS International Inc.
31 Sun Pac Blvd., Brampton, Ontario, Canada L6S 5P6
TYPICAL SPECIFICATION
ULLTRA™ & ULLTRA-H1E™
NEMA Premium® Ultra Low Loss TRAnsformer
45 kVA: 97.7%,
75 kVA: 98.0%,
112.5kVA: 98.2%,
150 kVA: 98.3%,
225 kVA: 98.5%,
300 kVA: 98.6%,
500 kVA: 98.7%,
750 kVA: 98.8%.
Submit for approval before shipment certified type test results for non-linear load testing
including efficiency of 50% and full load for each size of transformer ordered on the project.
5. Positive & negative sequence impedance at 60Hz:
2.0% to 3.5% (up to 75 kVA), 2.5% to 5% (112.5 kVA to 150 kVA), 3.0% to 6% (225 kVA to 300 kVA),
4.5% to 7% (500kVA) 5% to 8% (750 kVA to 1000kVA).
E. Other Requirements:
1. [OPTION] For harmonic mitigating model (ULL-H1E), zero sequence impedance and reactance at
60Hz shall not exceed:
Zo < 0.95%, Xo < 0.3% for sizes up to 150 kVA, Zo < 1.0%, Xo < 0.5% for sizes 225 kVA and 300
kVA, Zo < 1.5%, Xo < 0.5% for 500 kVA and Zo < 2.0%, Xo < 1.0% for 750 kVA.
2. [OPTION] [Dual electrostatic shields.]
3. [OPTION] Over-Temperature switch[es] wired to internal terminal strip. Temperatures specified for
use with class 220°C insulation systems. Standard configuration is N.C. opening [N.O. closing] on
high temperature. Number of switches: [one switch: 170°C or 200°C on center coil] [two switches:
170°C and 200°C on center coil] [six switches: one 170°C and one 200°C on each of the 3 coils.]
4. [OPTION] Submit for approval before shipment certified production test results with serial numbers for
linear load efficiency at 35% load for one of each size of transformer manufactured for the actual
project.
5. [OPTION] Submit for approval before shipment certified production test results with serial number for
non-linear load testing up to the lesser of either full load or 225kVA for one of each size of
transformer manufactured for the project.
2. VERIFICATION
A. Non-linear Load Testing Capability:
1. Manufacturer must have a non-linear load testing program operating in the production environment. A
detailed description of the program and a sample non-linear test report must be submitted to the
Engineer in sufficient time for him to issue his written approval at least 10 days before bid closing.
The non-linear load bank shall consist of three single-phase power electronic rectifier loads that
present the same current harmonics (fundamental plus 3rd, 5th, 7th, 9th, 11th, etc.) as the 120VAC
personal computer power supply loads present in workplaces today. The non-linear load bank shall
be capable of presenting current distortion levels up to 100% and a load of up to 75 kVA on each
phase-to-neutral leg in order to test a 225 kVA transformer at full load and larger transformers at a
reduced load. Dual wattmeters and CT sets shall be used to monitor transformer input and output
power with revenue class accuracy. Measurements shall include input and output power, kVA, and
efficiency plus input and output current and voltage distortion and k-factor. This information shall be
presented in graphical form.
3. WARRANTY
A. Transformer shall carry a 25-year pro-rated warranty, which shall be standard for the product line.
 Mirus International Inc. [2012-08-13]
1-888-TO MIRUS
www.mirusinternational.com
Page 4 of 5
ULL-TS003-A0
MIRUS International Inc.
31 Sun Pac Blvd., Brampton, Ontario, Canada L6S 5P6
III.
TYPICAL SPECIFICATION
ULLTRA™ & ULLTRA-H1E™
NEMA Premium® Ultra Low Loss TRAnsformer
PART 3 EXECUTION
1. INSTALLATION
A. The installing contractor shall install the ultra low loss transformer per the manufacturer's recommended
installation practices as found in the installation, operation, and maintenance manual and comply with all
applicable codes.
2. ACCEPTANCE
A. [OPTION] Manufacturer's representative shall visit site, verify installation, and submit to owner a letter
stating equipment and installation meets intent of specification and manufacturer's warranties and
guarantees are in effect.
********** END OF SECTION **********
 Mirus International Inc. [2012-08-13]
1-888-TO MIRUS
www.mirusinternational.com
Page 5 of 5
ULL-TS003-A0
MIRUS International Inc.
31 Sun Pac Blvd., Brampton, Ontario, Canada L6S 5P6
ULLTRA™ _
TECHNICAL DATA
ULTRA LOW LOSS TRANSFORMER (30% LESS LOSSES THAN NEMA TP1)
‘MT1’, ‘MT2’ ENCLOSURE DIM. - inches [mm]
GENERAL SPECIFICATIONS:
PRIMARY
3-phase, 3-wire, 60Hz
SECONDARY
3-phase, 4-wire, 60Hz
OPERATING TEMPERATURE RISE
115°C
INSULATION CLASS
220°C
PRIMARY TAPS
15kVA (and all 208V):
± 1 x 5%
30kVA - 300kVA: + 2 x 2.5%, - 4 x 2.5%
500kVA - 750 kVA:
± 2 x 2.5%
K-FACTOR RATING (at 150°C rise)
13
NEUTRAL BUS AMPACITY
DIMENSIONS - inches [mm]
B
C
D
CASE STYLE
A
MT1
MT2
29.00 [737]
38.00 [965]
200% of phase current
ENERGY EFFICIENCY (see table below)
Linear Load:
Meets and/or exceeds CSL-3
efficiency requirements by ensuring
losses are 30% lower than Nema TP1
Non-Linear Load:
Exceeds Nema TP1 requirements
16.75 [425]
21.50 [546]
15.00 [381]
19.50 [495]
19.00 [483]
23.50 [597]
E
F
13.75 [349]
17.00 [432]
13.00 [330]
17.50 [445]
‘MT3’, ‘MT4’, ‘LT’ ENCLOSURE DIM. - inches [mm]
MAGNETISING INRUSH
< 10 times FL RMS
WINDING MATERIAL
Copper
INSULATING VARNISH IMPREGNATION
Polyester Resin
AUDIBLE SOUND LEVEL
As per NEMA ST-20
15 - 45kVA:
75 – 150kVA:
225 – 300kVA:
500kVA:
750kVA:
ENCLOSURE
Type:
Paint:
Colour:
45dB
50dB
55dB
60dB
64dB
CASE STYLE
MT3
MT4
LT1
LT2
LT3
NEMA-3R, ventilated
Polyester powder coated
ANSI 61 Grey
ELECTROSTATIC SHIELD
Single, [double]
A
45.00 [1143]
51.50 [1308]
59.00 [1499]
66.00 [1677]
75.00 [1905]
DIMENSIONS - inches [mm]
B
C
D
26.00 [661] 21.00 [534]
25.00 [635]
32.00 [813] 25.50 [648]
29.50 [749]
39.50 [1003] 30.00 [762]
34.00 [864]
44.00 [1118] 34.00 [864]
38.00 [965]
48.50 [1232] 39.00 [991] 43.00 [1092]
E
F
21.50 [546] 19.00 [483]
23.50 [597] 23.50 [597]
24.00 [610] 32.00 [813]
26.00 [660] 36.00 [915]
27.50 [699] 41.00 [1041]
APPLICABLE STANDARDS
NEMA ST20, NEMA TP1, NEMA TP2
CSA C9, CAN/CSA-C802.2, DOE CSL-3
OPTIONS:
OVER-TEMPERATURE SENSORS
[170°C], [200°C]
SOLID BOTTOM PLATE (Case ‘MT’ only)
[yes], [no]
Sizes
Linear
kVA Case
Primary Style
15
30
45
75
112.5
150
225
300
500
750
MT2
MT2
MT3
MT3
MT4
MT4
LT1
LT2
LT3
LT3
Weight
lb [kg][1]
250 [115]
375 [170]
500 [227]
850 [386]
1000 [454]
1200 [544]
1800 [820]
2500 [1135]
3175 [1440]
4250 [1928]
Efficiency
K-13
35%
Load[2]
50%
Load
97.90%
98.25%
98.39%
98.60%
98.74%
98.81%
98.95%
99.00%
99.09%
99.16%
97.96%
98.35%
98.45%
98.65%
98.82%
98.85%
99.00%
99.07%
99.20%
99.28%
Impedance
ULLTRA H1E
Non-Linear No-Load Zero Sequence
@50%
Losses
Zo
Xo
Load[3]
Watts
97.0%
75
<0.95% <0.3%
97.5%
115
<0.95% <0.3%
97.7%
150
<0.95% <0.3%
98.0%
225
<0.95% <0.3%
98.2%
320
<0.95% <0.3%
98.3%
400
<0.95% <0.3%
98.5%
560
<1.0% <0.5%
98.6%
710
<1.0% <0.5%
98.7%
1100
<1.5% <0.5%
98.8%
1550
<2.0% <1.0%
3-Phase
Short
Circuit
Terminal Sizes
Primary
208V
480V
Secondary
600V
120/208V
2.0 - 3.5%
#2-#14
#6-#14
#6-#14
#6-#14
2.0 - 3.5%
2/0-#6
#2-#14
#2-#14
2/0-#6
2.0 - 3.5% 250MCM-#6
#2-#14
#2-#14
250MCM-#6
2.0 - 3.5% 600MCM-#4
2/0-#6
2/0-#6
600MCM-#4
2.5 – 5.0% 2x350MCM-#6 250MCM-#6
2/0-#6
2x350MCM-#6
2.5 – 5.0% 2x350MCM-#6 350MCM-#6 250MCM-#6 2x350MCM-#6
3.0 – 6.0% Copper Pad Copper Pad Copper Pad Copper Pad
3.0 – 6.0% Copper Pad Copper Pad Copper Pad Copper Pad
4.5 – 7.0% Copper Pad Copper Pad Copper Pad Copper Pad
5.0 – 8.0% Copper Pad Copper Pad Copper Pad Copper Pad
Neutral
2x#2-#14
2x2/0-#6
2x250MCM-#6
2x600MCM-#4
4x350MCM-#6
4x350MCM-#6
Copper Pad
Copper Pad
Copper Pad
Copper Pad
1. Approximate values.
2. NEMA Premium & CSL3 specifications.
3. Equivalent to NEMA TP-1.
4. Specifications are subject to change without notice.
5. For additional information refer to: Typical Specifications, Technical Guide, Internal Layout and Connection Diagrams.
 Mirus International Inc. [2012-08-13]
1-888-TO MIRUS
www.mirusinternational.com
ULL-S001-A16