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GE Grid Solutions
Models PT7-2-150 & PT7-2-200

Models PT7-2-150 & PT7-2-200

Product catalog summary

Specifications:
The document details the specifications for the GE Grid Solutions Models PT7-2-150 & PT7-2-200, which are indoor voltage transformers under ANSI Group 2 for medium voltage applications. The accuracy class is specified as 0.3 WXMYZ 1.2ZZ at 100% rated voltage with a 120 V based ANSI burden, and 0.3 WXMY, 1.2Z at 58% rated voltage with a 69.3 V based ANSI burden. The frequency is 60 Hz, and the maximum system voltage is 36.5 kV with BIL ratings of 150 kV and 200 kV full wave for models PT7-2-150 and PT7-2-200, respectively.

Regulatory Approvals:
The transformers are manufactured to meet ANSI/IEEE C57.13 requirements and are approved for revenue metering in Canada (Approval No. AE-0677 Rev. 1).

Thermal Rating:
The thermal rating is 1,500 VA at 30°C ambient and 1,000 VA at 55°C ambient. The approximate weight is 175 lbs.

Design and Construction:
Primary terminals are 3/8-16 brass screws with flatwasher and lockwasher for 150 kV BIL only, while secondary terminals are 1/4-20 brass screws. The core and coil assembly is vacuum encapsulated in polyurethane resin. A primary fuse is recommended but not supplied.

Recommended Spacings:
For PT7-2-150, the minimum spacing for unit to unit is 0.00” and HV to ground in air is 11.50”. For PT7-2-200, lead to lead spacing is 14.00” and lead to ground in air is 14.00”. These spacings are for guidance and should be verified for specific conditions.

Primary Terminal Lead Assembly:
Supplied with 200 kV BIL units only, includes a 10-32 threaded connector, insulating boot, and lead wire rated at 600 volts. Lead wire is No. 10 AWG and 36 inches long unless specified otherwise.

Additional Information:
The document includes a circle diagram for predicting transformer performance under various loads and power factors. It also provides contact information for GE Grid Solutions.

Catalog excerpts

Models PT7-2-150 & PT7-2-200 Indoor Voltage Transformer ANSI Group 2 Medium Voltage Accuracy Class Thermal Rating 0.3 WXMYZ 1.2ZZ at 100 % rated voltage with 120 V based ANSI burden. 0.3 WXMY, 1.2Z at 58 % rated voltage with 69.3 V based ANSI burden. Maximum System Voltage Model PT7-2-150 36.5 kV, BIL 150 kV full wave Model PT7-2-200 36.5 kV, BIL 200 kV full wave. REGULATORY AGENCY APPROVALS Manufactured to meet the requirements of ANSI/IEEE C57.13. Approved for revenue metering in Canada by industry Canada, Approval No. AE-0677 Rev. 1 (a) Also available are other ratios and frequencies, double secondaries and units meeting IEC 44-2. Note: It is recommended that the system line-to-line voltage not exceed transformers maximum system voltage level.

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Models PT7-2-150 & PT7-2-200 ANSI Group 2 Primary terminals are 3/8-16 brass screws with one flatwasher and lockwasher. (150 kV BIL only) Secondary terminals are 1/4-20 brass screws with one flatwasher and lockwasher. The core and coil assembly is vacuum encapsulated in polyurethane resin. A primary fuse is not supplied, but is recommended. Use a 34.5, 0.5E rated fuse A test card is provided with each unit. The circle diagram can be used to predict the performance of a transformer for various loads and power factors. A convenient scale of volt-ampere is shown on the unity power factor line (u.p.f)...

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Models PT7-2-150 & PT7-2-200

Models PT7-2-150 & PT7-2-200

Catalog excerpts

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