ET2H30S SOLA HEVI DUTY, ET2H30S Datasheet - Page 10

• Manufacturer Part Number: ET2H30S
• Description: Distribution Transformer
• Manufacturer: SOLA HEVI DUTY

Specifications of ET2H30S

• Transformer Mounting: Wall
• No. Of Phases: Three
• External Height: 28"
• Power Rating: 30kVA
• Weight: 292lb
• Transformer Type: Distribution
• Frequency: 60Hz
• External Width: 23"
• Supply Voltage: 480V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

K-Factor transformers are designed to reduce the heating
eff ects of harmonic currents created by loads like those
shown in Chart A. The K-Factor rating is an index of the
trans form er’s ability to withstand harmonic con tent while
operating within the temperature limits of its insulating system.
SolaHD K-Factor transformers have UL ratings of K-4, K-13,
and K-20.
The SolaHD K-Factor design is a specialized transformer that
off ers these benefi ts:
Features
194
K-Factor Transformers
6
•
•
•
• Conductors to carry harmonics of a K-rated load
• UL 1561 listed up to K-20 rated protection
• Rated temperature rise of 150°C, 220°C in su la tion
• Shielded for quality power
• Basic design takes “stray losses” into account and
• Core and coil design engineered to manage the zero
• Provides 100% rated current without overheating the
without exceeding insulation tem per a ture ratings
functions within safe operating tem per a tures
sequence fl ux caused by triplen har mon ics
wind ings or saturating the core
Conductors capable of carrying the harmonic currents
of non-linear loads without ex ceed ing the tem per a ture
rating of the insulation system.
A transformer design that takes into account the
increase in naturally occurring “stray” losses caused
by non-linear loads. These losses cause standard
trans form ers to dra mat i cal ly overheat and sub stan tial ly
shorten design life.
A core and coil design that man ag es the DC fl ux caused
by triplen harmonics. As these har mon ics increase, they
cause additional current to circulate in the delta winding.
This pro duc es a DC fl ux in the core which leads to core
sat u ra tion, voltage in sta bil i ty and overheating.
Ventilated Distribution Transformers
contact Technical Services at [phone] with any questions.
Visit our website at www.solahd.com or
Accessories and Optional Design Styles*
* Not all optional designs are UL listed. Contact Technical Services.
Chart A: Typical Load K-Factors
• Wall mount ing brackets (500 lbs maximum) (Item
• Weather Shields (UL-3R)
• Totally en closed non-ven ti lat ed designs (TENV) (Non UL)
• Low temperature rise units available
• Open core and coil designs (UL Recognized)
• Copper Wound designs
• Alternate voltages
• Compliant to NEMA TP-1 Standards
REPRINTED WITH PERMISSION FROM EDI MAGAZINE
Load
Electric discharge lighting ...................................................................................... K-4
UPS with optional input fi lter ................................................................................ K-4
Welders .......................................................................................................................... K-4
Induction heating equipment .............................................................................. K-4
PLCs and solid state controls ................................................................................. K-4
Telecommunications equipment (e.g.. PBX) ..................................................K-13
UPS without input fi ltering ..................................................................................K-13
Multiwire receptacle circuits in general care areas of
health care facilities and classrooms of schools, etc. ..................................K-13
Multi-wire receptacle circuits supplying inspection or
testing equipment on an assembly or production line .............................K-13
Mainframe computer loads .................................................................................K-20
Solid state motor drives (variable speed drives) ..........................................K-20
WB1C)
E25872
K-Factor
List ed