INTRODUCTION
Page 3
PHYSICAL CONSIDERATIONS
•Handling. Type JFR regulators are designed to be lifted either by a forklift at the base or by use of lifting hooks on the side of each tank. Each JFR regulator is provided with either 2 or 4 lifting hooks on the side of each tank. The number of hooks has been established to provide a margin of safety. Use all supplied lifting hooks when lifting.
WARNING
Improper use of lifting provisions can cause death, serious injury, or equipment damage.
To prevent:
Do not use cover lifting eyes to lift complete unit. Cover lifting eyes are for untanking only.
•Location. Type JFR regulators are designed for outdoor installation. Any regulator may be platform or pedestal mounted. Regulators provided with hanger brackets are suitable for pole mounting. When the regulator is to be installed in a substation on a pedestal it is recom- mended that a minimum elevation to the live connection be established, as required by applicable codes.
Hazardous voltage present at the line terminals of the bushings on the cover of the regulator.
Will cause serious injury or death.
To prevent:
Elevation. When the regulator will be used at an elevation above 1000 meters (3300 feet) the kVA rating must be de- rated per ANSI C57.15 to assure operating temperature limits are not exceeded.
LINE TERMINALS AND
CONNECTIONS
Type JFR voltage regulators are routinely equipped with line bushing terminals per the following criteria.
Nameplate Line Current | Conductor Size Range |
Rating | or Threaded Stud Size |
50A to 300A | #2 to 477 MCM |
301A to 668A | #2 to 800 MCM |
669A to 1200A | 1.125- 12 |
1201 A to 2000A | 1.500- 12 |
Clamp type terminals for use through 668 ampere are capable of accepting an aluminum or copper conductor.
Tank grounding provision consists of a
ELECTRICAL CONSIDERATIONS
Type JFR regulators are commonly installed using any of four electrical configurations.
•One regulator in
•Three regulators in wye on a
•Two regulators in open delta on a
•Three regulators in closed delta on a
Each of the four alternatives, when complete with switching provisions, will take the electrical configuration as shown on the next page.
The descriptions 'S', 'L', and 'SL' are embossed into the cover for user convenience at time of installation.