Ratings
• 5-1000 kVA
• 65° C temperature rise
• 60 hertz standard, 50 hertz optional
• Low voltages: 120/240, 240/480 and 277 Volts
• High voltages: 2400 through 34,400 Volts
• Insulation levels:
Standard Features:
1. Lifting lugs.
2. Cover-mounted high voltage porcelain bushing(s) with eyebolt terminal (10-100 kVA) or spade terminal.
3. Low voltage insulators are available in fiberglass reinforced
polyester material or porcelain (both eyebolt and spade terminals).
4. Low voltage neutral grounding strap (furnished on
10-50 kVA single HV bushing units).
5. ANSI support lugs (hanger brackets).
6. Cover has 13 mils minimum of polyester coating providing
15 kV dielectric insulation of tank ground parts from live parts and increased resistance to corrosion.
7. Self-venting and resealing cover assembly.
8. The core/coil bolt-in pads are 180° apart.
9. Embossed low voltage leads.
10. Oil filled plug with cover ground strap.
11. Tank ground pad.
12. Laser etched anodized aluminum nameplate with bar coded serial number.
13. The paint finish process applies a durable, corrosion resistant finish to the product. The finish meets or exceeds all the
performance requirements of ANSI C57.12.28. The multi-step process includes an epoxy primer uniformly applied by cationic electro-deposition and a urethane top coat.
The following additional features are all standard on self-protected type CSP® units:
14. Primary protective link.
15. Surge arrester.
16. Secondary circuit breaker.
17. Secondary breaker operating handle with emergency
overload reset and overload signal light.
18. Tank bottom rim is three layers thick for increased durability and resistance to shipping and handling damage.
Options
Primary Termination
• Cover-mounted high voltage porcelain bushing(s) with spin top terminal.
• Side-wall mounted high voltage porcelain bushing(s) with spin top terminal (Standard on all 4800 volts and below).
Secondary Termination
• Low voltage porcelain bushings with NEMA spade terminals
(Standard on all units 167 kVA and above).
Primary Switching
• Externally-operated tap changer.
• Externally-operated dual voltage switch or internal terminal board.
Overcurrent Protection
• Internally-mounted current limiting fuse in series with protective link.
Contact the division for voltages and dimensions on 667
through 1000 kVA.
Optional Accessories
1. High voltage bushings are of two types and are made
of wet process porcelain:
• Speed wrench operable eyebolt bushing for cover mounting.
• Spin-top bushings for either cover or side-wall mount.
2. Tap changers compensate for small voltage variations along the distribution system. The externally operated tap changer is a single-phase, five-position design for de-energized operation
3. A dual voltage switch permits use of the same transformer
on distribution systems with different system voltages.
4. The CSP® protection package consists of four related
components that work together to provide complete self-contained protection against surge currents, short circuits and overloads:
• The protective link removes an internally-faulted transformer from the primary line, maintaining service to other customers on the line not served by the faulted unit.
• The MOV polymer arresters handle surges of 65,000 amperes (small block) and 100,000 amperes (large block).
• Secondary circuit breakers protect against overloads and external short circuits.
• An optional current limiting fuse supplements the protective link when the fault current exceeds the link’s rating.
5. Stainless steel tanks and covers are available.
6. EZ-Lift Eyebolt
7. Natural Ester Oils
8. IFD
Overhead Distribution Transformers
Approximate weights and dimensions
Standard Design Dimensions and Weights
(All weights and dimensions are approximate.
Dimensions may change to meet the
customer spec.)
Single Phase, 60 HZ, ONAN, 65° Rise High
Voltage
(Refer to Division for available tap
positions and dimensions for other
primary voltages.)
Low Voltage 120/240 or 240/480 or 2
Overall weights and dimensions are given in pounds, inches or gallons and are approximates.
