POWER SYSTEMS, INC. DynaVar

1 JULY 200630- OHIO BRASS AIKEN, SC POWER SYSTEMS, INC. DynaVar station class and IntermediateSurge ArrestersPrinted in USARGS 10 MSection30 Copyright 2006 Hubbell/Ohio BrassNOTE: Because Hubbell has a policy of continuous product improvement, we reserve the right to change design and specifications without 2006 OHIO BRASS AIKEN, SC30- POWER SYSTEMS, the introduction of the station class Type PVN, Ohio Brass has expanded its line of polymer-housed arresters for distribution, substation and transmission applications. PVN arresters are suitable for applications up through 230 kV. The PVI arresters are suitable for applications up through 138 kV. These designs combine the advantages of a polymer housing and metal-oxide varistor valve blocks, and of-fer the benefits of a one piece arrester construction for all voltage ratings.

2 Stacking of individual arrester units is not required with polymer available are porcelain and silicone station (Type VN, SVN and VL) DynaVar Intermediate and station class surge Arresters in this catalog comply with ANSI/IEEE Standard In addition, they are tested to IEC Type PVN station class Arresters described in this publication are protected by patent numbers 4,656,555; 4,899,248; 4,905,118; 5,043,838; 5,138,517; 5,159,159 and others Type PVI Intermediate class Arresters described in this publication are protected by patent numbers 4,656,555; 4,899,248; 4,905,118 and others - MaterialHubbell POWER Systems, Inc. warrants all products sold by it to be merchantable (as such term is defined in the Uniform Commercial Code) and to be free from defects in material and workmanship.

3 Buyer must notify the Company promptly of any claim under this warranty. The Buyer's exclusive remedy for breach of this warranty shall be the repair or replacement, factory, at the Company's option, of any product defective under the warranty which is returned to the Company within one year from the date of shipment. NO OTHER WARRANTY, WHETHER EXPRESS OR ARISING BY OPERATION OF LAW, COURSE OF DEALING, USAGE OF TRADE OR OTHERWISE IMPLIED, SHALL EXIST IN CONNECTION WITH THE COMPANY'S PRODUCTS OR ANY SALE OR USE THEREOF. The Company shall in no event be liable for any loss of profits or any consequential or special damages incurred by Buyer. The Company's warranty shall run only to the first Buyer of a product from the Company, from the Company's distributor, or from an original equipment manufacturer reselling the Company's product, and is non-assignable and non-transferable and shall be of no force and effect if asserted by any per-son other than such first Buyer.

4 This warranty applies only to the use of the product as intended by Seller and does not cover any misapplication or misuse of said - ApplicationHubbell POWER Systems, Inc. does not warrant the accuracy of and results from product or system performance recommendations resulting from any engineering analysis or study. This applies regardless of whether a charge is made for the recommendation, or if it is provided free of for selection of the proper product or application rests solely with the purchaser. In the event of errors or inaccuracies determined to be caused by Hubbell POWER Systems, Inc., its liability will be limited to the re-performance of any such analysis or study.

5 Table of ContentsPageIntroduction ..2 Warranty ..2 General arrester Information ..3 arrester Application ..3 Pressure Relief ..3 Temporary Overvoltage Capability ..3 Polymer Housed Description ..4 ESP Weathershed Material ..4 Construction ..4 Benefits ..4 Seismic Performance ..4 Key to the Catalog Numbers ..5 PVI Polymer Housed Intermediate Protective Characteristics ..6 Dimensions and Mounting ..7 PVI Nameplates ..7 PVI Terminals ..8 Mounting Information ..8 PVI-LP Polymer Housed Intermediate class Arresters ..9 Dimensions and Mounting ..9 Protective Characteristics ..10 PVIA Intermediate class surge Dimensions and Mounting.

6 11 Protective Characteristics ..12 PVN Polymer Housed station Arresters ..13 Protective Characteristics ..13 Mounting Dimensions and Mounting ..14 Grading Rings ..14 PVN Terminals ..14 Packaging (PVI/PVN)..15 PVN Nameplates ..15 Base Mounting Information ..15 Crossarm Discharge Counters (PVI/PVN)..15 Insulating Subbases (PVI/PVN) ..15 Brackets ..16 PVNA Polymer Housed station class surge Dimensions and Mounting ..17 Protective Characteristics ..18VL and VN Porcelain Housed station class Arresters ..19 Introduction ..19 Application Guide ..19 Description and Operation ..19 Protective Characteristics.

7 20 Nameplates ..20 Dimensions and Mounting ..21 SVN Polymer Housed Arresters ..22 Construction ..22 Catalog Ordering Protective Characteristics ..25 Nameplates ..25 Dimensions and Mounting ..26 Discharge Counters ..27 Insulating arrester Routine & Design Testing ..28 JULY 200630-3 OHIO BRASS AIKEN, SC POWER SYSTEMS, RECOMMENDED station DYNAVARMCOV FOR VARIOUS system VOLTAGESG eneral arrester InformationSwitching surge capability of DynaVar arresters is expressed in terms of dissipated capabilities assume a two shot energy discharge takes place within one minute. The indicated current levels are not an arrester limitation, but are related to the indicated energy based on the conservative assumption that the entire line length is charged to maximum surge voltage are easily made, and the values obtained seldom exceed the considerable energy capability of the DynaVar Overvoltage CapabilityDynaVar arresters are gapless and consist of a column of metal-oxide blocks connected between line and ground.

8 The blocks can withstand a significant POWER frequency overvoltage for a limited time, depending on the magnitude of any immediately preceding surge duty. This duty can be the result of switching surges on higher voltage lines, or from other sources. The energy discharge capability is found in the above of the TOV curves are available in the Design Test Reports which are listed on page 30-29. The Design Test Reports are available on our web site com or by calling an Ohio Brass representative. The temporary over-voltage capability can be determined from this curve. The prior duty curve of this table is based upon absorption of rated energy immediately preceding application of the CapabilityKilojoules per kV of MCOVMax.

9 Energy DischargeCapability kJ/kV - (1) (4) (2) (2) (3) (3)TypePVNA, PVI, PVI-LPPVIAPVNVL/VLAVNSVN(1) For currents .65kA or less(2) For currents or less(3) For currents kA or less(4) For currents .4 or less * Rating for initial venting only.** Polymer arresters will survive multiple venting Relief Capability-Symmetrical rms kAArresterTypeVLA*VL*VN*SVN*PVN**PVNA**P VI**PVI-LP**PVIA**ANSI BrassDemonstrated DynaVar station -intermediate arresters exceed pressure relief requirements of ANSI Pressure ReliefArrester ApplicationThe DynaVar arrester is described by its maximum continu-ous line-to-ground operating voltage (MCOV). The arrester s most important application criterion is the maximum voltage which can be continuously effectively grounded neutral systems, any DynaVar ar-rester with MCOV equal to maximum line-to-neutral kV is the normal application.

10 For example, a 138 kV system usually has a maximum line-to-line continuous voltage of 145 kV rms. 145 kV divided by 3 gives 84 kV line-to-ground voltage. The appropriate DynaVar arrester for this application is the Dyna-Var 84, with MCOV of 84 ungrounded or impedance grounded systems, the gap-less DynaVar arrester s temporary overvoltage capability is used. For applications where a ground fault is expected to be removed within 30 minutes, the minimum MCOV is maximum system line-to-line voltage divided by For extended operation under ground fault conditions up to 2,000 hours but not to exceed five percent of service life, the minimum MCOV is maximum system line-to-line voltage divided by arresters are designed to be used where average ambient temperature does not exceed 40 C (104 F) and the daily maximum temperature does not exceed 60 C (140 F).