REQUIREMENTS FOR PAD-MOUNTED, COMPARTMENTAL-TYPE SELF-COOLED, SINGLE-PHASE DISTRIBUTION TRANSFORMERS WITH HIGH VOLTAGE BUSHINGS; HIGH-VOLTAGE, 34500 GRYD/19920 VOLTS AND BELOW; LOW-VOLTAGE, 240/120 VOLTS; 167 KVA AND SMALLER
Institute of Electrical & Electronics Engineers
Foreword
1 Scope
2 References
2.1 General
3 Ratings
3.1 Kilovolt-ampere ratings
3.2 Voltage ratings and tap ratings
4 Basic lightning impulse insulation levels and dielectric
test levels
5 Tests
5.1 General
5.2 Dielectric tests
6 Construction
6.1 General
6.2 Bushings and terminals
6.3 High-voltage and low-voltage compartments
6.4 Instruction nameplate
6.5 Oil preservation
6.6 Tanks
7 Storage and installation
7.1 Storage
7.2 Installation
8 Other requirements that may be specified for some applications
Describes certain electrical, dimensional, and mechanical characteristics and takes into consideration certain safety features of single-phase, 60 Hz, mineral-oil-immersed, self-cooled, pad-mounted, compartmental-type distribution transformers with high-voltage bushings. These transformers are rated 167 kVA and smaller, with high-voltages of 34500 GRD/19900 volts and below for operation between one phase and grounded neutral, and low-voltage of 240/120 volts. These transformers are generally used for step-down purposes from an underground primary cable supply.
| Document Type | Standard |
| Status | Current |
| Publisher | Institute of Electrical & Electronics Engineers |
| Supersedes |
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