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HomeMy WebLinkAboutExhibit E - Equipment Specifications . . . I�i�i--� � � � � � �n,� WALZ CSG � - - . � • Prepared for: Innovative Power Systems 2670 Patton Rd, Roseville, MN 55113 Location: St Joseph, MN Date: March 15, 2017 � :_.� ,s��.��:��, EVS Project No.: 2017-024.1 WALZ 972KW PROJECT: EQUIPMENT SPECS& CALCULATIONS 1.7 LJ-L'� TABLE OF CONTENTS � ���¢ �" ',` � �� �:A. 1. SYSTEM DESCRIPTION............................................................... ....ar.�., ..�........��,..:Z $. �. �*.. . s _ .. 2. STEP—UP TRANSFORMER SPECS...............................................�� .............�,�................3 � �. � � 3. SWITCHBOARD SPECS.....................................................�.......................................4 �� kr� _;:, 4. ZIG—ZAG GROUNDING TRANSFORMER SPECS......................::.......................................5 5. ZIG—ZAG GROUNDING TRANSFORMER CALCULATIONS ................................................6 6. ONE—LINE DIAGRAM ..............:.,...................:...............................................................7 °£� "� � ����# 3/15/2017 Page 1 WAIZ 972KW PROJECT: EQUIPMENT SPECS& CALCULATIONS ��� 3- LOW VOLTAGE SWITCHGEAR SPECS: . . . � . Item Description ' General Low Voltage switchboard Standards UL Standard 891,NEMA PB-2(Switchboard Standards) Voltage 480V 3P,4W BIL 30 kV -- --- Frequency 60 Hz � � Main Bus 1600A Copper =- Design Outdoor, NEMA 3R, Non-walk-in,Service Entrance Rated Fault Rating 65 kA Main CB 1600A,42kA,Draw-out, insulated case, LSIG Trip to be visible, lockable,readily accessible. Provide arc flash maintenance switch Utility Production Metering Section per Xcel Energy TR-40 requirements(Xcel will supply the Metering Section metering sockets and everything.We just need a section per TR-40 requirements) Isolation Switch 1600A with lockout provision, UL 98,65 kA minimum i (unfused) 480V Feeder molded case w/electronic trip,35 kA, LOTO provisions. Circuit Breakers 3x400 Amps& 1x350 Amps, per drawing. Aux Transformer 10 kVA,single-phase,480 L-L-120/240V. Primary fused(25A) Aux Power Panel 120/240V,40A, MCB, 10 kA, Feeders as shown on schedule. Heaters Provide(1)condensate heater per section-250W, 120V-powered by aux panel. Provide adjustable thermostat. Color ANSI#70 light gray Misc. Provide top lifting provisions. Provide(2) 120V,20A,GFI outlets. Provide exterior padlock provisions. Provide nameplates per equipment section � Circuit CB Size(A) #Poles Main 40 2 �� One Heater/section 20 1 DAS System 20 1 GFI Outlet#1 20 1 GFI Outlet#2 20 1 �:�, Spare 20 1 ���`� ` Spare 20 1 Spare 20 1 Spare 20 1 3/15/2017 Page 4 WALZ 972KW PROJECT: EQUIPMENT SPECS&CALCULATIONS �/��+�+ 4- GROUNDING TRANSFORMER SPECS: � . . � � . ..,:. .. . ... ....:.. --.., . .... , ... <,,.. . � .. . Item Description General Low Voltage, Dry-Type,Zig-Zag,Grounding Transformer Standards ANSI C57, UL Voltage 480V,3P �u�� BIL 30 KV _._.�_ Frequency 60 Hz " Windings Aluminum Enclosure 3R powder coat painted enclosure Zero Sequence Reactance(XO)-per phase 0.1422 ohm+/-10%(On a 0.972 MVA,480V base) XO/RO Ratio Must be>_4 Zero Sequence Current(10) Must exceed 78.34 A,per phase Neutral Current(In) Must exceed 235 A continuous 5 second Withstand Rating 2770.1 A Relay SEL-751 In Cabinet Relay ��..y ..a�.,, r�.„ .. NOTE: Don't proceed with the procurement of the Zi�-zag grounding transformer before having the calculations document approved by XceL �;�� '� ���°� �� , `,. �� � � � �� ������,. ,� �� '� �,� 3/15/2017 Page 5 . > � . � �� �. �� a. �- c� �.�. � > z a m 0 .. �, e,�:• � z o > � N � O A � � W . Q� � z. � a, 7 � � lLl LL� K E 41 ?3 i.,., .� a = Z N \. 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