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Staco Energy FIRSTLINE P User Manual

Bypass switch cabinet
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FIRSTLINE P
Maintenance Bypass Switch Cabinet
480V 60Hz
300 to 500kVA
USER MANUAL
003-2622 REV A
03/17/20

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Summary of Contents for Staco Energy FIRSTLINE P

  • Page 1 FIRSTLINE P Maintenance Bypass Switch Cabinet 480V 60Hz 300 to 500kVA USER MANUAL 003-2622 REV A 03/17/20...
  • Page 2 No reproduction of any part of this manual, even partial, is permitted without the authorization of Staco Energy Products Company. The Staco Energy Products Company reserves the right to modify the product described herein, in order to improve it, at any time and without notice.

  • Page 3: Table Of Contents

    Table 5 - Environmental Specifications ................15 Table 6 - Electrical Specifications ..................15 Figure 1 - The FirstLine P Maintenance Bypass Switch Cabinet .......... 3 Figure 2 - Pallet Mounting Hardware ..................4 Figure 3 - Inside View of Maintenance Bypass Switch Cabinet ..........6 Figure 4 –...

  • Page 4: Safety Warnings

    1. SAFETY WARNINGS IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS READ AND FOLLOW ALL SAFETY INSTRUCTIONS • Do not use outdoors. • Do not route wiring across or near hot surfaces. • Do not install near gas or electric heaters. • Equipment should be installed where it will not readily be subjected to tampering by unauthorized personnel.

  • Page 5: Protective Equipment

    Symbols Used In the Manual In this manual, some operations are shown by graphic symbols to alert the reader to the dangerous nature of the operations: Danger / Risk of Electric Shock This symbol indicates possibility of serious injury or substantial damage to the unit, unless adequate precautions are taken.

  • Page 6: Introduction

    2. INTRODUCTION Overview The FirstLine P Maintenance Bypass Switch Cabinet for 300 kVA, 400 kVA, 500 kVA with 480 V Input and Output is a steel cabinet providing the maintenance bypass function. The cabinet has conduit attachment points at the top and the bottom for maximum flexibility in wiring the source and load power connections.

  • Page 7: Cabinet Setup

    FLU-P-500-MBPS 460 lbs (209 kg) 3.3 Clearances The following clearances are recommended for the FirstLine P Maintenance Bypass Switch Cabinet. Other clearances may be needed based on site conditions. From Front of Cabinet 36” (91.4 cm) working space Other surfaces No Clearance requirements 3.4 Unloading the Cabinet(s)
  • Page 8 9. Lift the cabinet with a forklift one to two inches (1”-2” [2.5-5cm]) above the pallet. 10. Slide the pallet completely away from the raised cabinet. 11. Carefully move the cabinet to the desired location and slowly lower the cabinet to the floor or other appropriate flat surface.

  • Page 9: Electrical Installation

    4. ELECTRICAL INSTALLATION 4.1 Overview Each of the pieces of equipment covered by this manual has four sets of power connections: 1. Input from the power source, typically, from the electric utility. 2. Power routed to the input of the UPS. 3.

  • Page 10: Wiring Preparation

    4.2 Wiring Preparation 1. Verify that the equipment is the proper type. The Maintenance Bypass Switch Cabinet (MBS) can be used in delta-delta or wye-wye applications, but the UPS must be properly configured (refer to the UPS manual). For delta-delta applications where an input neutral is not provided, the output neutral connection must not be used and the MBS to UPS neutral connections should be omitted.

  • Page 11: Wiring Installation

    4.3 Wiring Installation 1. Switch off utility power to the distribution point where the UPS will be connected. Be absolutely sure that there are no hazardous voltages present. 2. Remove as many panels as needed for adequate access for wiring the cabinet. 3.

  • Page 12: Terminal Strip Torque Requirements

    • Terminal 7 has a limited amount of unregulated dc power available to power an LED lamp to permit the use of a lighted switch for REPO. Contact Staco Energy Products Company for details if you desire to use this feature.

  • Page 13: Switch Settings

    4.4.3 Switch Settings Switch "S2" on the Options Control Board (refer to Figure 7) is a four position "DIP" switch. Pushing on the top half of each switch section turns it ON, pushing on the lower half turns the switch OFF. There are labels on the board to help identify the switch section. The first section "PLT"...

  • Page 14: Operation

    5. OPERATION Refer to the User's Manual for the UPS for instructions on operating the UPS part of the system. If the UPS is part of a parallel system, special operating instructions apply. 5.1 Maintenance Bypass Switch (MBS) The purpose of the Maintenance Bypass Switch (MBS) is to facilitate servicing the UPS without removing power from the load.

  • Page 15: To Transfer From Normal Mode To Maintenance Bypass

    WARNING Always observe proper switching sequence to avoid loss of power to the load. 5.2 To transfer from normal mode to maintenance bypass 1. Transfer the UPS to Bypass Mode. 2. Close BKR2. 3. Open BKR3. 4. Open BKR1 to completely isolate the UPS. 5.3 To transfer from normal mode to maintenance bypass with SKRU 1.

  • Page 16: Repo (Option)

    5.7 REPO (Option) User provided switch circuits are required to activate the REPO. Upon activation, the REPO function trips Breaker 2 (if closed) and Breaker 3 (if closed), interrupting power to the load. See Section for REPO installation details To restart the system after activation of the REPO, make sure that the REPO switch is in the non-activated state before continuing.

  • Page 17: Maintenance

    6. MAINTENANCE There are no wear items in the MBS that require periodic replacement. However, regular care will assure maximum availability of power. Keep the ventilation openings in the cabinet free of dust and debris. Wipe the cabinet exterior with a soft cloth, slightly dampened with water, to remove dust. Consider performing periodic infrared temperature measurements on the circuit breaker terminations.

  • Page 18: Technical Specifications

    7. TECHNICAL SPECIFICATIONS Table 3 – Recommended Wire Size kVA Rating Input/Output Ground (2) 350kcmil 1/0 AWG (3) 300kcmil 3/0 AWG (3) 300kcmil 3/0 AWG *Wire must be rated 75°C or higher Table 4 - Terminal Tightening Torques Power Terminal Torque Bolt Size Torque Load 13-17 lbf-ft...

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