and cured to reduce hot spots and seal out moisture. The assembly shall be installed on vibration-absorbing pads.

Transcription

1 -156 Purpose & Industrial Control Purpose (1000 kva and Below) mounted dry-type transformers of the two-winding type, self-cooled, with ratings and voltages as indicated on the drawings. shall be manufactured by Eaton. shall be designed, manufactured and IEEE standards. All 0-volt class transformers through 1000 kva shall be UL listed and bear the UL label. shall be designed for for 24 hours a day, 3 days a year operation, with normal life expectancy as defined in ANSI C.6. shall be insulated as follows: Type EP or EPT: 0.0 through 75 kva: 185 C Type DS-3 or DT-3: 15 kva and above: 220 C (Class R) indicated temperature rise in a C average over 24 hours. Test Method D5. compressed. Coils shall be wound of and continuous wound construction. BIL (Basic Impulse Level) for all 0- volt class windings shall be 10 kv. Cutler-Hammer Family of Dry-Type Distribution On encapsulated units rated [75 kva and below] [15 kva and below] [ kva and below] the core and coil assembly shall be completely encapsulated in a proportioned mixture of resin and aggregate to provide a moistureproof, shock resistant seal. The core and coil encapsulation system shall minimize the sound level. On ventilated units rated [15 kva and above] [30 kva and above] [112.5 kva and above] the core and coil assembly shall be impregnated with nonhygroscopic, thermosetting varnish and cured to reduce hot spots and seal out moisture. The assembly shall be installed gauge steel and shall be finished utilizing a continuous process of degreasing, cleaning and phosphatizing, of a thermosetting polyester powder coating and subsequent baking. The coating color shall be ANSI and shall be UL recognized for outdoor use. The maximum temperature exceed 0 C. [15 kva and below] [ kva and below] encapsulated the enclosure construction shall be totally enclosed, nonventilated, NEMA 3R, with lifting provisions. On units rated [15 kva and above] [30 kva and above] [112.5 kva and above] the enclosure construction shall be ventilated, NEMA 2, dripproof, with lifting provisions. All ventilation openings shall be protected against falling dirt. On outdoor units, provide suitable weathershields over ventilation openings. To ensure proper ventilation, locate the unit at least 6 inches (152.4 mm) from the adjacent wall Table Average on the rated voltage

2 Purpose & Industrial Control -1 Dry-Type for Non-Linear Loads Furnish and install, individually mounted dry-type transformers of the two-winding type, self-cooled, with ratings and voltages as indicated on the drawings. shall be manufactured by Eaton. shall be designed, manufactured, and tested in accordance with all the latest applicable ANSI, NEMA and IEEE standards. All 0-volt class transformers through 0 kva shall be UL listed as suitable for non-sinusoidal current loads with K factor not to exceed [4] [13] [20]. shall be insulated with a UL recognized 220 C (Class R) insulation system. Winding temperature rise shall be (80 C) (115 C) (1 C). indicated temperature rise in a C average. Test Method D5. compressed. Transformer coils shall be wound of conductor with continuous wound construction. An electrostatic shield consisting of a single turn of aluminum shall be placed between the primary and secondary winding and grounded to the transformer core. BIL (Basic Impulse Level) for all 0-volt class windings shall be 10 kv. The neutral conductor shall be rated to carry 200% of normal phase current. Table Average of a polymer polyester powder coating and baking. The coating color shall be ANSI and shall be UL recognized for outdoor use. The maximum temperature exceed 0 C. openings shall be protected against falling dirt. On outdoor units, provide suitable weathershields over ventilation openings. To ensure proper ventilation, Non-Linear Ratings The transformers shall be specifically designed to supply circuits with a harmonic profile equal to or less than a K Factor of 4 or 13 as described below without exceeding [80 C] [115 C] [1 C] temperature rise. Table Non-Linear Ratings Harmonic K-4 K-13 Fundamental 3rd 5th 7th th 11th 13th 15th 17th 100.0% 34.0% 22.0% 1.0%.7%.5%.3%.3% 100.0% 70.0% 42.0% 5.0% 1.0%.7%.6% on the rated voltage Further Information B.36B.01.S.E Product Specification Guide..... Section 1

3 -1 Purpose & Industrial Control Low Temperature Rise Energy Efficient Furnish and install, three-phase low temperature rise energy efficient drytype transformers of the two-winding type, self-cooled, with ratings (kva) as indicated on the drawings. shall be manufactured by Eaton. shall be designed, manufactured, all applicable ANSI/NEMA and IEEE standards, and shall be listed by Underwriters Laboratories, Inc. and bear the UL label. shall be designed for 24 hours a day, 3 days a year, with normal life expectancy as defined in ANSI C.6. Insulation System and Temperature Rise shall be insulated with a 220 C (Class R) shall be 115 C rise (80 C rise) and shall be capable of carrying a 15% continuous overload, (80 C rise transformers a continuous 30% overload) without exceeding a 1 C rise. Required performance shall be obtained without exceeding the above rise in a C maximum, 30 C average ambient temperature. Test Method D5. losses. Maximum magnetic flux densities shall be substantially below the saturation point. The core volume shall allow efficient transformer operation at 10% above the nominal tap voltage. The core laminations shall be tightly clamped and compressed. Coils shall be wound of electrical grade [aluminum] [copper] with continuous wound construction. BIL (Basic Impulse Level) for all 0-volt class windings shall be 10 kv. of a polymer polyester powder coating and subsequent baking. The coating color shall be ANSI and shall be UL recognized for outdoor use. falling dirt. To ensure proper ventilation, All transformers shall be equipped with a wiring compartment suitable for conduit entry and large enough to allow convenient wiring. The maximum temperature on top of the enclosure shall not exceed 0 C. shall not exceed the following ANSI/NEMA levels for self-cooled Table Average on the rated voltage Product Specification Guide..... Section 1

4 Purpose & Industrial Control -15 Isolation with Electrostatic Shielding mounted dry-type transformers of the two-winding type, self-cooled, with ratings and voltages as indicated on the drawings. shall be manufactured by Eaton. shall be designed, manufactured, and IEEE standards. All 0-volt class transformers through 1000 kva shall be UL listed and bear the UL label. shall be designed for for 24 hours a day, 3 days a year operation, with normal life expectancy as defined in ANSI C.6. shall be insulated as follows: Type EP or EPT: 0.0 through 75 kva: 185 C insulation system which superseded Class F, based on 115 C rise. Type DS-3 or DT-3: 15 kva and above: 220 C (Class R) insulation system which superseded Class H, based on 1 C rise. indicated temperature rise in a C maximum ambient. Test Method D5. losses. Maximum magnetic flux densities shall be substantially below the saturation point. The transformer core volume shall allow efficient transformer operation at 10% above the nominal tap voltage. The core laminations shall be tightly clamped and compressed. Transformer coils shall be wound of electrical grade aluminum and continuous wound construction. An electrostatic shield consisting of a single turn of [aluminum] [copper] shall be placed between the primary and secondary winding and grounded to the transformer core. BIL (Basic Impulse Level) for all 0-volt class windings shall be 10 kv. [15 kva and below] [ kva and below] the core and coil assembly shall be completely encapsulated in a proportioned mixture of resin and aggregate to provide a moistureproof, shock resistant seal. The core and coil encapsulation system shall minimize the sound level. On units rated [15 kva and above] [30 kva and above] [112.5 kva and above] the core and coil assembly shall be impregnated with nonhygroscopic, thermosetting varnish and cured to reduce hot spots and seal out moisture. The assembly shall be installed of a thermosetting polyester powder coating and baking. The coating color shall be ANSI and shall be UL recognized for outdoor use. The maximum temperature on top of the enclosure shall not exceed 0 C. [15 kva and below] [ kva and below] encapsulated, the enclosure construction shall be totally enclosed, nonventilated, NEMA 3R, with lifting provisions. On units rated [15 kva and above] [30 kva and above] [112.5 kva and above] the enclosure construction shall be falling dirt. On outdoor units, provide suitable weathershields over ventilation openings. To ensure proper ventilation, Table Average on the rated voltage

5 -1 Purpose & Industrial Control Typical Specification ac Adjustable Frequency Drive Isolation mounted dry-type transformers of the two-winding type, self-cooled, with ratings and voltages for input application as indicated on the drawings. shall be manufactured by Eaton. shall be designed, manufactured, and IEEE standards. All 0-volt class transformers through 5 kva shall be UL listed and bear the UL label. shall be designed for for 24 hours a day, 3 days a year operation, with normal life expectancy as defined in ANSI C.6. shall be insulated with a UL recognized 220 C (Class R) indicated temperature rise in a C average over 24 hours. Test Method D5. compressed. Coils shall be wound of and continuous wound construction. BIL (Basic Impulse Level) for all 0- volt class windings shall be 10 kv. A temperature sensing device shall be imbedded in the center coil. of a thermosetting polyester powder coating and subsequent baking. The coating color shall be ANSI and shall be UL recognized for outdoor use. The maximum temperature exceed 0 C. falling dirt. To ensure proper ventilation, On outdoor units, provide suitable weathershields over ventilation openings. Table -18. Average The following table lists the recommended kva size of the drive isolation transformer for a specific horsepower requirement. Table -10. Three-Phase Horsepower ac Motor kva Minimum Product Specification Guide..... Section 1