Siemens 21-115532-001 User Manual

Installation / Operation / Maintenance
Instructions
JFR Distribution Step Voltage Regulator
21-115532-001 PR4018-06 SUPERCEDES
21-115532-001 PR4018-05
October 08
TABLE OF CONTENTS
Page
INTRODUCTION
Inspection for Damage in Shipment................... 2
Storage Prior To Installation............................. 2
Physical Considerations ...................................3
Line Terminals and Connections.......................3
Electrical Considerations .................................. 3
Installation Diagrams........................................4
Protective Measures ........................................5
Control Connections ........................................ 5
Connection Diagrams
Straight Design................................................6
Inverted Design................................................7
Series Transformers Design ............................. 8
Placing the Regulator in Service
Before Connecting ...........................................9
Connecting ......................................................9
Switching On-Line ............................................ 9
Checking Regulator Operation..........................9
Removing the Regulator From Service .............10
Maintenance
General Instructions ........................................11
Operational Checks.........................................11
Periodic Inspection..........................................12
Page
Special Features
Polarized Disconnect Switch
and Hinged Control Panel ......................................... 13
Remote Mounting of Control Equipment..................... 13
Vari-AMP
TM
Position Indicator................................... 13
Operation at Less Than Rated Voltage.........................14
Forced Air Cooling ................................................... 15
Subbase Assembly .................................................. 15
Parts List
Major Components................................................... 16
Position Indicator................................................... 17
Type TLG Dial Switch ............................................. 18
Type TLG Quick Break Mechanism ........................... 19
Type TLF Dial Switch ............................................... 20
Type TLF Quick Break Mechanism............................21
Bypass Arresters..................................................... 22
Bushings.................................................................23
For Emergency Service Call :
1-877-742-3309
Siemens Energy, Inc.
THESE INSTRUCTIONS DO NOT PURPORT TO COVER ALL DETAILS OR VARIATIONS IN EQUIPMENT, NOR TO PROVIDE FOR EVERY POSSIBLE CONTINGENCY TO BE MET IN CONNECTION WITH INSTALLATION, OPERATION OR MAlNTENANCE. SHOULD FURTHER INFOR­MATION BE DESIRED OR PROBLEMS ARISE WHICH ARE N OT COVERE D SUF ICIENT LY FOR T HE PURCHASER ’S PURPOSES , THE MATTER SHOULD BE REFERRED TO YOUR SIEMENS ENERGY, INC. REPRESENTATIVE.
THE CONTENTS OF THIS INSTRUCTION MANUAL SHALL NOT BEC OME PART OF OR MODIFY ANY PRIOR OR EXISTING AGREEMENT, COMMITMENT OR RELATIONSHIP. THE SALES CONTRACT CONTAINS THE ENTIRE OBLIGATION OF SIEMENS ENERGY, INC. THE WARRANTY CONTAINED IN THE CONTRACT BETWEEN THE PARTIES IS THE SOLE W ARRANTY OF SIEMENS ENERGY, INC. ANY STATEMENTS CONTAINED HEREIN DO NOT CREATE NEW WARRANTIES OR MODIFY THE EXISTING WARRANTY.
INTRODUCTION
Page 1
Type JFR single-phase step-voltage regulators are designed to give dependable service and to make installation, operation and maintenance as simple as possible.
Technology advances, especially in the realm of the control apparatus, make it efficient to provide a separate instruction manual for the Accu/StatTM control provided with this JFR Regulator. For specific control information, refer to the Accu/StatTM control manual included with the regulator.
Hazardous Voltag e. Death or serious injury from electrical shock, burns will result from misuse.
To prevent: Do not service or touch until you have de-energized
high voltage, grounded all terminals and turned off control voltage. Grounding terminals with line to ground capacitors may produce a small arc.
Only qualified personnel should work on or around this equipment after becoming thoroughly familiar with all warnings, safety notices, instructions and maintenance procedures contained herein.
The successful and safe oper ation of this equipment is dependent upon proper handling, installation, operation and maintenance.
QUALIFIED PERSON
FOR THE PURPOSE OF THIS MANUAL AND PRODUCT LABELS, A QUALIFIED PERSON IS ONE WHO IS FAMILIAR WITH THE INSTALLATION, CONSTRUCTION AND OPERA­TION OF THE EQUIPMENT, AND THE HAZARDS INVOLVED. IN ADDITION, HE HAS THE FOLLOWING QUALIFICATIONS:
(a) Is trained and authorized to de-energize, clear, ground and
tag circuits and equipment in accordance with established safety practices.
(b) Is trained in the proper care and use of protective
equipment such as rubber gloves, hard hat, safety glasses or face shields, flash clothing, etc., in accordance with established safety practices.
(c) Is trained in rendering first aid.
Distinctive signal words (DANGER, WARNING, CAUTION) are used in this instruction book to indicate degrees of hazard that may be encountered by the user. For the purpose of this manual and product labels these signal words are defined below.
DANGER Indicates an imminently hazardous situation
which, if not avoided, will result in death or serious injury
WARNING Indicates a potentially hazardous situation,
which, if not avoided, could result in death or serious injury.
CAUTION Indicates a potentially hazardous situation
which, if not avoided, may result in minor or moderate injury.
INTRODUCTION
Page 2
INSPECTION FOR STORAGE PRIOR TO DAMAGE IN SHIPMENT INSTALLATION
Check each item with the shipping manifest immediately upon receipt of the regulator. Make a thorough visual in­spection of the regulator. Check for evidence of damage attributable to mishandling in shipment. Should any short­age or damage be found, notify the local agent of the ca rrier making the delivery and make appropriate notation on the freight bill. Any damage or shortage that is not noted on the freight bill becomes the recipients responsibility. A claim should be made immediately with the carrier. Please also notify your Siemens representative as soon as possible.
Assure that the control compartment enclosure is tightly closed, and regulator tank is sealed.
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 recom­mended that a minimum elevation to the live connection be established, as required by applicable codes.
LINE TERMINALS AND CONNECTIONS
Type JFR voltage regulators are routinely equipped with line bushing terminals per the following criteria.
Nameplate Line Current Rating
50A to 300A #2 to 477 MCM 301A to 668A #2 to 800 MCM 669A to 1200A 1.125- 12 UNF-2A 1201 A to 2000A 1.500- 12 UNF-2A
Clamp type terminals for use through 668 ampere are capable of accepting an aluminum or copper conductor.
Tank grounding provision consists of a 0.5-13NC tapped hole in a steel pad for regulators rated to 300 amperes. Above 300 ampere ratings, a stainless steel pad with two
0.5-13NC tapped holes is provided.
Conductor Size Range or Threaded Stud Size
ELECTRICAL CONSIDERATIONS
Type JFR regulators are commonly installed using any of four electrical configurations.
One regulator in single-phase application. (Figure 4A)
Hazardous voltage present at the line terminals of the bushings on the cover of the regulator.
Will cause serious injury or death. To prevent:
De-energize the regulator before servicing.
Elevation. When the regulator will be used at an elevation above 1000 meters (3300 feet) the kVA rating must be de­rated per ANSI C57.15 to assure operating temperature limits are not exceeded.
Three regulators in wye on a grounded-neutral three­phase system. (Figure 4D)
Two regulators in open delta on a three-phase ungrounded system. (Figure 4B)
Three regulators in closed delta on a three-phase ungrounded system. (Figure 4C)
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 th e cove r for user convenience at time of installation.
INTRODUCTION
Page 4
INSTALLATION DIAGRAMS
Single Phase
Connection of one single phase JFR regulator on single
phase line.
Closed Delta
4C)
Open Delta
Connection of two single phase JFR regulators in open delta on a three phase, ungrounded line.
Wye Connected
Connection of three JFR regulators in closed delta on three phase, ungrounded system.
Connection of three single phase JFR regulators in wye on a three phase, grounded neutral system.
INTRODUCTION
Page 5
PROTECTIVE MEASURES
Bypass Arrester. All JFR regulators are equipped with a properly sized arrester , connected externally between the 'S' and 'L' line terminals. The arrester is provided to protect the series winding of the regulator from line surges. By itself, the bypass arrester does not provide lightning protection for the regulator.
Lightning Protection. The number of lightning arresters used will be a discretionary decision on the part of the user, considering such factors as isokeraunic level and degree of risk of damage to be accepted. The minimum recommended lightning protection consists of a properly sized arrester between the 'S' or 'L' bushing and ground on a single phase or a wye connected system. A delta connection system requires the use of two arresters to accomplish minimum protection levels. Additional protection can be obtained with the use of arresters at both the 'S' and 'L' terminals in single phase or wye systems and on all three terminals on a delta system.
For best results, install lightning arresters on the mounting lugs adjacent to the bushings near the top of the tank. The lugs are 0.5 - 13NC located on 2.5 inch centers. Ground the arrester(s) and the regulator tank solidly to the same ground connection. Be careful to keep the ground lead connections as short as possible.
Thru Fault. Type JFR regulators are rated under condition of thru-faults per ANSI C57.15.
Figure 5A
For this purpose, it is necessary to use the nameplate drawing and control diagram found in the control enclosure.
1. Refer to the Nameplate. The P2 column indicates the
correct connection for lead P2 based on the system voltage. Using the applicable control diagram, the terminal designation of the nameplate can be cross referenced to the proper terminal on the 19-pin terminal block.
The user is advised to provide for additional source imped­ance, bus sectionalizing or other means of limiting the avail­able thru-fault current if these criteria are exceeded at the installation.
CONTROL CONNECTIONS
Many regulators can be used at several different nominal system voltages. It is therefore necessary to assure that the regulator is properly connected at the 19 pin upper terminal block for the system voltage on which the particular regul ator will be used.
2. Depending on the regulator, there may be a second
nameplate column indicating that lead U2 should also be connected. If so, the U2 column indicates the correct connection for lead U2 based on the system voltage Using the applicable control diagram, the “U” terminal designation of the nameplate can be cross referenced to the proper terminal on the 19-pin term i na l b lock.
3. For regulator equipped with fans for forced-air cooling,
another set of connections will be shown.
NOTE Matters specifically relating to the Accu/Stat
control used in conjunction with the regulator are not included in this manual. Refer to the appropriate control instruction manual.
TM
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