Siemens SDV6 Instruction Manual
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Siemens SDV6 Instruction Manual

Distribution circuit breaker 15.5 kv, 27.6 kv and 38 kv
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Type SDV6 distribution circuit breaker
15.5 kV, 27.6 kV and 38 kV
instruction manual
Installation operation maintenance E50001-F710-A250-X-4A00
Answers for energy.

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Summary of Contents for Siemens SDV6

  • Page 1 Type SDV6 distribution circuit breaker 15.5 kV, 27.6 kV and 38 kV instruction manual Installation operation maintenance E50001-F710-A250-X-4A00 Answers for energy.
  • Page 2 50 volts equipment purchased. Siemens reserves or more, and shall, at a minimum, be the right to make changes in the additionally trained in all of the following:...

  • Page 3: Table Of Contents

    The sales contract contains Maintenance 25 - 32 the entire obligation of Siemens Energy, Inc. The warranty contained in the contract Overhaul between the parties is the sole warranty of Siemens Energy, Inc. Any statements...

  • Page 4: Introduction

    This instruction manual applies to the type Introduction SDV6 distribution circuit breaker enclosure. The type SDV6 distribution circuit breaker Refer to instruction manual E50001-F710- is designed to meet all applicable ANSI, A251-X-76US for instructions applicable to NEMA and IEEE standards.
  • Page 5 Field service operation and warranty issues The signal words "danger," "warning" and "caution" used in this instruction manual Siemens can provide competent, well indicate the degree of hazard that may be trained field service representatives to encountered by the user. These words are...

  • Page 6: General Description

    These instructions cover the installation, operation and maintenance of a Siemens type SDV6 distribution circuit breaker using vacuum interrupters. The equipment Figure 1: Typical type SDV6 distribution circuit breaker designs described in this instruction manual consists fo free-standing outdoor Introduction distribution circuit breakers for application up to 38.0 kV.
  • Page 7 Siemens may breaker carries a type designation, as cause the warranty to be void. shown in Table 1: Type SDV6 distribution This instruction manual applies to the type circuit breaker designation. This SDV6 distribution circuit breaker enclosure designation may appear on drawings and structure.

  • Page 8: Receiving, Handling And Storage

    Receiving, handling and storage Receiving Shipping damage claims Each type SDV6 distribution circuit breaker Important: The manner in which visible is securely blocked and braced for shipping damage is identified by consignee shipment. It is crated, boxed or covered as prior to signing the delivery receipt can required by shipping conditions.
  • Page 9 Siemens cannot be held liable for repairs. practical at the time the carrier’s Siemens will not be held liable for repairs inspector is present, it must be done in any case where repair work was within 15 days of receipt of equipment.
  • Page 10 38.0 51 (1,295) 60 (1,525) 80 (2,050) Figure 2: Lifting type SDV6 distribution circuit breaker with crane Heavy weight. Can result in death, serious injury or property damage. Observe all handling instructions in this instruction manual to prevent tipping or dropping of equipment.
  • Page 11 Receiving, handling and storage Storage Lifting type SDV6 distribution circuit breaker with crane When it is necessary to store a type SDV6 distribution circuit breaker in an area Recommended lifting of type SDV6 exposed to the weather or under humid...

  • Page 12: Installation

    Installation Preparation for installation Location Prior to installation of the type SDV6 The circuit breaker should be located so that it is readily accessible for manual distribution circuit breaker, careful design, planning and construction of the operation and inspection. Ample clearance...
  • Page 13 Installation Figure 3: Outline drawing 15.5 kV- 15.5 kV- 27.6 kV- 38.0 kV- 20/25/31.5/40 kA- 31.5/40 kA- 20/25 kA- 20/25/31.5/40 kA- 1,200/2,000 A 3,000 A 1,200/2,000 A 1,200/2,000 A 44.0 (1,118) 52.3 (1,328) 52.3 (1,328) 67.2 (1,706) 39.9 (1,014) 39.9 (1,014) 39.9 (1,014) 63.5 (1,612) 47.9 (1,217)
  • Page 14 Installation Figure 4: Anchoring type SDV6 distribution circuit breaker Rear Four 0.875 diameter holes for O/Door swing 0.750 diameter anchor bolts 120° Secondary conduit opening 90° 120° Protective relay door swing Outer door swing Dimensions in inches (mm) Front 15.5 kV- 15.5 kV-...

  • Page 15: Electrical Connections

    SDV6 inductive coupling between them and distribution circuit breaker. Connections should be sized for full operating current...

  • Page 16: Instrument Transformers

    Figure 5: Type SDV6 distribution circuit Phase barriers are provided on all 27.6 kV breaker with interphase barriers and and 38.0 kV class type SDV6 distribution bushing current transformers installed in circuit breakers as shown in Type SDV6 primary compartment on page 17...
  • Page 17 Instrument transformers Figure 5: Type SDV6 distribution circuit breaker with interphase barriers and bushing current transformers installed in primary compartment Load side Load side 2-4-6 1-3-5 Bushing current transformer (one per bushing shown) Operator compartment High-voltage compartment Low-voltage compartment Insulation plates apply only in 27.6 kV and 38.0 kV...

  • Page 18: Installation

    Will cause death, serious injury or property damage. Read instruction manuals, observe safety instructions and use qualified personnel. Introduction Figure 5: Type SDV6 distribution circuit breaker with interphase barriers and This section provides a description of the bushing current transformers installed in...
  • Page 19 Installation Figure 6: Low-voltage compartment Item Description Opening for manual charging Operator compartment Manual close pushbutton Manual open pushbutton Low-voltage compartment CHARGED/DISCHARGED indicator OPEN/CLOSE indicator Operations counter Control disconnect device...
  • Page 20 Installation Manual spring charging check The automatic spring charging features of the circuit breaker must be checked. 1. Insert the manual spring charging Control power is required for automatic crank into the manual charge socket spring charging to take place. as shown in Figure 6: Low-voltage compartment on page 19.
  • Page 21 Installation Inspection Check the following points: 1. Make a final mechanical inspection of Shipping bracing and tag between phase the circuit breaker. Verify the contacts barriers (on units so equipped) may are in the OPEN position, and the damage circuit breaker. closing springs are DISCHARGED.
  • Page 22 Installation Testing High potential tests employ hazardous voltages. Will cause death or serious injury. Follow safe procedures, exclude unnecessary personnel and use safety barriers. Keep away from circuit breaker during application of test voltages. After test completion, ground both ends and the middle ring (if visible) of the vacuum interrupter to dissipate any static charges.
  • Page 23 Installation Table 2: High-potential test voltages Rated maximum Rated power- Field-test voltage voltage frequency withstand kV (rms) kV (rms) kV (rms) kV dc 15.5 37.5 27.6 38.0 When the test is performed with the A dielectric test on secondary and circuit breaker open, the integrity of control circuits should be made for one the vacuum interrupter will also be...
  • Page 24 2. Check torque of the bolts that secure the roof bushings to the top plate of the type SDV6 distribution circuit breaker. Torque should be in the range of 20-25 ft-lbs (27-34 Nm). 3. Connect primary incoming power source to circuit breaker.

  • Page 25: Maintenance

    Periodic inspections and maintenance are Siemens recommends the circuit breaker essential to obtain safe and reliable should be inspected and exercised operation of the type SDV6 distribution annually. circuit breaker. For the safety of maintenance personnel as When type SDV6 distribution circuit well as others who might be exposed to breakers are operated under "usual service...
  • Page 26 Maintenance Recommended hand tools Open-end or box-end wrenches: Type SDV6 distribution circuit breakers 3/8, 9/16 and 3/4 inches. uses both standard SAE (U.S. customary) Socket wrenches: and metric fasteners. Metric fasteners are used for the vacuum interrupters and in 3/8, 9/16 and 3/4 inches.
  • Page 27 The instructions contained herein should be carefully reviewed, understood and followed. The maintenance tasks described in Table 3: Maintenance tasks and in the type SDV6 distribution circuit breaker operator instruction manual E50001-F710-A251-X-76US must be performed regularly.
  • Page 28 6. Verify main contact status indicator shows OPEN. Item Description Opening for manual charging Operator compartment Manual close pushbutton Manual open pushbutton Low-voltage compartment CHARGED/DISCHARGED indicator OPEN/CLOSE indicator Operations counter Figure 7: Manual tripping of type SDV6 distribution circuit breaker...
  • Page 29 Figure 8: Side view of type SDV6 distribution circuit breaker Cleanliness check Maintenance and lubrication Figure 8 is a side view of the type SDV6...
  • Page 30 Maintenance High-potential test voltages If dc high-potential tests are used, note the *Megger is a registered following: trademark of Megger The voltages for high-potential tests are Group, Ltd. shown in Table 2: High-potential test If a dc test indicates loss of vacuum, voltages on page 23.
  • Page 31 2. Remove the phase barriers (if provided) circuit breaker housing. Starting with as shown in Figure 5: Type SDV6 zero volts, gradually increase the test distribution circuit breaker with voltage to 1,125 volts, 60 Hz z...
  • Page 32 Maintenance Protective relays and instruments The type SDV6 distribution circuit breaker can be equipped with a protective relay Risk of insulation damage with use of panel when required. A protective relay incorrect compounds. package can be supplied on a hinged panel May cause equipment dielectric failure.

  • Page 33: Overhaul

    SDV6 10,000 section, provide maintenance personnel with a guide to identifying and correcting Table 6: Overhaul schedule ANSI/IEEE "usual possible malfunctions of the type SDV6 conditions" distribution circuit breaker. Circuit breaker overhaul Table 6: lists the recommended overhaul schedule for type SDV6 distribution circuit breakers operating under ANSI/IEEE "usual...

  • Page 34: Maintenance And Troubleshooting

    Maintenance and troubleshooting Table 7: Periodic maintenance and lubrication tasks Sub-assembly Item Inspect for Primary power path Vacuum interrupter 1. Cleanliness. 2. Contact erosion. Note: Perform with manual-spring checks. 3. Vacuum integrity. Note: Perform with high-potential tests. Vacuum interrupter contact resistance 1.
  • Page 35 4. Motor cut-off switch LS21 or LS22 fails to operate. Replace if necessary. 5. Mechanical failure of operating mechanism. Check and contact regional service centers, the factory or telephone Siemens field service at +1 (800) 347-6659 or +1 (919) 365-2200 outside the U.S. Closing springs Closing coil or solenoid 1.
  • Page 36 Correct as required. Mechanical problem 1. Mechanical failure of operating mechanism. Check and contact regional service centers, the factory or telephone Siemens field service at +1 (800) 347-6659 or +1 (919) 365-2200 outside the U.S. Circuit breaker will not trip Tripping coil or solenoid (52T) does not 1.
  • Page 37 Circuit Breaker, it is very important to give furnished are correct for the circuit breaker complete in question. Without this serial number, Siemens cannot be sure of the correct information. This information should identity of the desired parts. include: If any doubt exists as to the instruction 1.

  • Page 38: Appendix

    Appendix Table 9: Technical ratings Rated withstand Rated transient Rated Rated Rated voltages recovery voltage Rated short- Rated Rated permissible closing maximum circuit and interrupting continuous tripping Lightning Circuit Power time to voltage short-time time current delay time latching breaker impulse peak frequency...
  • Page 39 125 Vdc 250 Vdc Non-inductive circuit interrupting capacity in A Circuit breaker auxiliary switch Inductive circuit interrupting capacity in A Table 12: Type SDV6 distribution circuit breaker weight in lbs (kg) Continous current A Voltage Interrupting 1,200 A 2,000 A 3,000 A 15.5 kV...
  • Page 40 Appendix Table 14: Technical ratings Item Unit 15.5 kV 27.6 kV 38.0 kV Lightning impulse withstand voltage Full wave 1.2/50 µs Chopped wave 2 µs Full wave 1.2/50 µs ---- ---- ---- Power-frequency withstand voltage Rated short-circuit current 20/25/31.5/40 20/25 20/25/31.5/40 %dc component Rated making closing and latching current...
  • Page 41 Appendix Figure 9: Typical control schematic Legend Schematic shown with closing springs 01/C Control switch close (remote) Red indicating light (remote) discharged and 01/T Control switch trip (remote) Closing spring position switch, closed circuit breaker open. Close and trip power disconnect when closing spring is discharged Motor power disconnect Closing spring position switch, open...
  • Page 42 Appendix Table 15: Remarks...
  • Page 43 Appendix Table 15: Remarks (continued)
  • Page 44 Replaces No. E50001-U229-A268-X-US00 Printed in USA All rights reserved. Trademarks mentioned in this document are the property of Siemens AG, its affiliates, or their respective owners. Subject to change without prior notice. The information in this document contains general descriptions of the technical options available, which may not apply in all cases.

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