User ManualTable of ContentsContacting Liebert for Support2Important Safety Instructions91.0 Unpacking and Inspections111.1 External Inspections111.2 Unloading and Handling111.2.1 Handling Considerations12Table 1 Shipping weights (typical)121.2.2 Unit Preparation121.3 Internal Inspections122.0 Location Considerations132.1 Recommended Minimum Service Clearances132.2 Heat Output13Table 2 Heat output132.3 Operating Environment132.4 Altitude14Figure 1 Recommended derating for high altitude operation14Figure 2 Maximum ambient temperature for full load operation at higher altitudes14Table 3 Altitude conversion—feet to meters143.0 Locating The STS2/PDU153.1 Anchoring the Unit to the Floor153.2 Leveling of the 250A Only STS2/PDU Without Anchoring154.0 Power and Control Wiring164.1 Input and Output Power Connections16Figure 3 Typical STS2/PDU, one-line diagram17Figure 4 Typical STS2/PDU, one-line diagram, with dual static switch output circuit breakers (not...17Figure 5 Typical STS2/PDU, one-line diagram, with inline distribution, dual static switch output ...18Figure 6 Typical STS2/PDU, one-line diagram, with I-Line distribution, dual static switch output ...18Table 4 Input/output conduit plate specifications184.2 System Grounding194.3 Control Wiring Connections194.4 Remote Source Selection Wiring19Table 5 Remote source selection terminal block194.5 Power Supply20Table 6 Terminal block 1 and terminal block 2 wire connections205.0 Output Power Wiring215.1 Customer Connections21Table 7 Distribution configurations216.0 Options226.1 Programmable Relay Board22Table 8 Programmable relay board pinout226.2 Input Contact Isolator Board226.3 Comms Board236.4 Internal Modem236.5 Network Interface Card (NIC)236.6 Remote Source Selection246.7 Key Lockout Switch246.8 Static Switch Redundant Output Breaker246.9 Inline Panelboards246.10 I-Line Panelboards246.11 Subfeed Breakers246.12 K-Factor Transformers246.13 Surge Suppression System247.0 Installation Drawings25Figure 7 Outline drawing, 250A STS2/PDU25Figure 8 Outline drawing, 250A STS2/PDU with right side I-Line distribution26Figure 9 Outline drawing, 250A STS2/PDU with right side inline distribution27Figure 10 Outline drawing, 250A STS2/PDU with left side I-Line distribution28Figure 11 Outline drawing, 250A STS2/PDU with left side Inline distribution29Figure 12 Outline drawing,400-600A STS2/PDU with right side inline distribution30Figure 13 Outline drawing, 400-600A STS2/PDU with right side output breaker or I-Line distribution31Figure 14 Outline drawing, 400-600A STS2/PDU with left side inline distribution32Figure 15 Outline drawing, 400-600A STS2/PDU with left side output breaker or I-Line distribution33Figure 16 Outline drawing, 800A STS2/PDU with right side output breaker or I-Line distribution34Figure 17 Outline drawing, 800A STS2/PDU with right side inline distribution35Figure 18 Outline drawing, 800A STS2/PDU with left side output breaker or I-Line distribution36Figure 19 Outline drawing, 800A STS2/PDU with left side inline distribution37Figure 20 Outline drawing, 250A STS2/PDU with key lockout switch option38Figure 21 Outline drawing, 400-600A STS2/PDU, inline distribution, right side with key lockout sw...39Figure 22 Outline drawing, 800A STS2/PDU, inline distribution, right side with key lockout switch...40Figure 23 Electrical field connections, 250A STS2/PDU input/output with CB841Figure 24 Electrical field connections, 250A STS2/PDU input with CB342Figure 25 Electrical field connections, 250A STS2/PDU input with CB3 & CB3A43Figure 26 Electrical field connections, 400-600A STS2/PDU input with CB344Figure 27 Electrical field connections, 400-600A STS2/PDU input with CB3 and CB3A45Figure 28 Electrical field connections, 800A STS2/PDU input with CB346Figure 29 Electrical field connections, 800A STS2/PDU input with CB3 and CB3A47Figure 30 Electrical field connections, 250A STS2/PDU output with inline panelboards48Figure 31 Electrical field connections, 400-800A STS2/PDU output with inline panelboards49Figure 32 Electrical field connections, STS2/PDU output with I-Line panelboard50Figure 33 Electrical field connections, 400-600A STS2/PDU with right side output breaker51Figure 34 Electrical field connections, 400-600A STS2/PDU with left side output breaker52Figure 35 Electrical field connections, 800A STS2/PDU with right side output breaker53Figure 36 Electrical field connections, 8600A STS2/PDU with left side output breaker54Figure 37 Electrical field connections, 800A STS2/PDU interconnect wiring55Figure 38 Electrical field connections, 800A STS2/PDU interconnect wiring, breaker section56Figure 39 Electrical field connections, 800A STS2/PDU interconnect wiring, STS section57Figure 40 Electrical field connections, 800A STS2/PDU interconnect wiring, left side distribution...58Figure 41 Electrical field connections, 800A STS2/PDU interconnect wiring, left side one-line59Figure 42 Electrical field connections, 800A STS2/PDU interconnect wiring, left side one line wit...60Figure 43 Electrical field connections, 800A STS2/PDU interconnect wiring, right side one line61Figure 44 Electrical field connections, 800A STS2/PDU interconnect wiring, right side one line wi...62Figure 45 Control wiring, 800A STS2/PDU, left side distribution63Figure 46 Control wiring, 800A STS2/PDU, right side distribution64Figure 47 Control connection location, 250A STS2/PDU65Figure 48 Control connection location, 400-800A STS2/PDU66Figure 49 Control location drawing conduit box, top entry, 400-600A STS2/PDU67Figure 50 Control wiring for the programmable relay board option68Figure 51 Control wiring for the input contact isolator board option69Figure 52 Control wiring for comms board70Figure 53 Control wiring for the internal modem option71Figure 54 Control wiring for the Network Interface Card (NIC) option72Figure 55 Control wiring for the RS-232 Port73Figure 56 Control wiring for remote source selection option74Figure 57 Color LCD touch screen display75Table 9 Input circuit breaker schedule, 250-800A76Table 10 Output circuit breaker schedule, 250-800A76Table 11 Non-automatic breaker schedule, 250-800A768.0 Introduction to STS2/PDU Operations778.1 System Description778.1.1 Redundancy778.1.2 Reliability and Agency Requirements788.1.3 Factory Backup and Service Assistance788.2 Modes of Operation788.2.1 Normal (Preferred Source)788.2.2 Transfer798.2.3 Transfer Inhibit798.2.4 Bypass798.3 Operator Controls79Figure 58 STS2/PDU touch screen display799.0 Theory of Operation809.1 General Description809.1.1 Static Transfer Switch2 Power Distribution Unit809.1.2 Source Transfer809.1.3 Automatic Transfer/Retransfer80Automatic Retransfer Inhibited809.1.4 Emergency Transfer819.1.5 Load Current Transfer Inhibit819.1.6 SCR Failure819.1.7 On/Off Sequence819.2 Detailed Component Description819.2.1 Controls81Operator Interface81Hardware81Firmware829.2.2 Circuit Breakers and Non-Automatic Circuit Breakers829.2.3 SCRs829.2.4 Logic Modules829.2.5 Audible Alarm829.2.6 RS-232 Port8210.0 Operating Instructions8310.1 Normal System Turn-On83Figure 59 STS2/PDU touch screen display8310.2 Manual Transfer / Preferred Source Selection84Figure 60 Source Transfer screen8510.3 Enabling Remote Source Selection8510.4 Maintenance Bypass86Figure 61 Gate board viewing slot locations8610.4.1 Bypass Procedures for Source 18710.4.2 Bypass Procedures for Source 28810.5 Normal System Shutdown8810.5.1 Shutdown in Static Transfer Switch Mode8810.5.2 Shutdown in Maintenance Bypass Mode8911.0 Alarms and Faults9011.1 Event Mask9011.2 Event and History Logs9111.2.1 Event Log9111.2.2 History Log9211.3 Alarm Notes9211.4 List of Messages92Table 12 Event messages9312.0 Communication Interfaces9512.1 Using the RS-232 Port9612.1.1 Connecting and Using a Terminal96Table 13 Terminal commands9612.1.2 Configuring the STS2/PDU via the Terminal97Groups Parameter97Item Parameter97Value Parameter98Table 14 Value types98Table 15 Group settings and values9912.1.3 Setting Bitpacked Options With the Terminal100Table 16 Binary-hexadecimal conversions101Putting the Terminal Command Together10212.1.4 Setting Event Masks with the Terminal10213.0 Touch Screen Display10413.1 Display Overview104Figure 62 STS2/PDU Touch Screen Display10413.2 Menu Overview105Figure 63 Menus105Figure 64 Keyboard and keypad displays10513.2.1 Security106Using the Optional Key Lockout Switch106Figure 65 Key lockout switch106Using the Password10613.3 Mimic Display10713.4 Event Controls10713.5 Event Display10713.6 Menu Bar10713.7 Configuration Menu107System Ratings107Event Masks108Figure 66 Event Mask dialog box108User Settings109Figure 67 User settings dialog box109Source Setpoints109Figure 68 Source setpoints110Table 17 Setpoint parameters110PDU Setpoints112Figure 69 PDU setpoints112Table 18 PDU setpoints112System Settings112Comm Options113Figure 70 Comm options dialog box113Configuring the Modem113Figure 71 Modem dialog box114Configuring the Input Contact Isolator Settings116Figure 72 Input Contact Isolator dialog box116Configuring the Programmable Relay Board Settings117Table 19 Standard settings for programmable relays117Figure 73 Programmable relay board dialog box118Configuring the Network Interface Card118SiteScan Configuration119Saving Your Communications Configurations119System Options119Figure 74 System options119Dual Output Breaker119PDU120Figure 75 PDU options button1204 Pole Transfer Switch120Shunt Trip120Wye Output Transformer120Remote Source Select120System ID12013.7.1 Logs121Event Log121Figure 76 Event log121History Log121Figure 77 History log12113.7.2 Source Transfers12213.7.3 Startup Procedure12213.7.4 Bypass Procedure12213.7.5 Help12213.7.6 Logo12213.8 Cleaning the LCD Touch Screen12214.0 Specifications12314.1 System Configuration12314.1.1 Frequency12314.1.2 Input Voltage123Table 20 Input voltage12314.1.3 Output Voltage123Table 21 Output voltage12314.1.4 System Current Ratings123Table 22 System current ratings12314.1.5 Grounding12314.1.6 Electrical Requirements124Table 23 Electrical requirements124Table 24 Unit short circuit withstand capability12414.1.7 Surge Suppression12414.1.8 Response Time12414.1.9 Environmental Requirements12414.2 System Components12414.2.1 Frame and Enclosure125Table 25 Frame sizes12514.2.2 Caster and Leveling - 250A only12514.2.3 Cooling12514.2.4 Access12614.2.5 Circuit Breakers12614.2.6 Cable Entrance12614.2.7 Doors12614.2.8 Color Graphical Display12614.2.9 RS-232 Port12714.2.10 Terminal Port Connections127Table 26 MTA plug pinout127Table 27 DB9 pinout12714.2.11 RS-232 Interface Parameters128Table 28 RS-232 settings12814.2.12 Maintenance Bypass12814.2.13 Fuseless Design12814.2.14 Options12815.0 Event Message Help Text12916.0 Maintenance15216.1 Proper Tightening of Nuts and Bolts152Table 29 Torque tightening152Table 30 Branch circuit breakers15216.2 Testing the STS2/PDU15216.3 Changing the Air Filter15217.0 Customer Settings15317.1 Programmable Relay Board Settings153Table 31 Programmable relay board settings record15317.2 Input Contact Isolator Settings154Table 32 Input contact isolator settings record154Size: 3.44 MBPages: 156Language: EnglishOpen manual