Altitude | Emerson Static Transfer Switch manual

Location Considerations

3.4Altitude

The standard units are designed for full load operation up to 4000 feet (1200 m) above sea level. See Figure 1 for recommended deratings for altitudes greater than 4000 feet (1200 m).

Figure 1 Recommended derating for high altitude operation

Rating (%)

100

98

96

94

92

90

88

86

0

4000

(1200)

4500

(1372)

5000

(1524)

5500

(1676)

6000

(1829)

6500

(1981)

7000

(2134)

7500

(2286)

8000

(2438)

8500

(2591)

9000

(2743)

9500

(2896)

10,000

(3048)

Altitude, Feet (M) Above Sea Level

Operation at full load at a higher altitude can be accommodated in ambient temperatures less than 104°F (40°C) ambient. Figure 2 shows the maximum allowable ambient temperature for full load operation at altitudes above 4000 feet (1200 m).

Figure 2 Maximum ambient temperature for full load operation at higher altitudes

Maximum Ambient Temperature, °F (°C)

104.0	(40)
104.0	(40)
102.2	(39)
102.2	(39)
100.4	(38)
100.4	(38)
98.6	(37)
98.6	(37)
96.8	(36)
96.8	(36)
95.0	(35)
95.0	(35)
93.2	(34)
93.2	(34)
94.1	(33)
94.1	(33)
89.6	(32)
89.6	(32)
87.8	(31)
87.8	(31)
86.0	(30)


	0			4000	(1200)	4500	(1372)	5000	(1524)	5500	(1676)	6000	(1829)	6500	(1981)	7000	(2134)	7500	(2286)	8000	(2438)	8500	(2591)	9000	(2743)	9500	(2896)	10,000		(3048)

Altitude, Feet (M) Above Sea Level

7

Image 15

Emerson Static Transfer Switch user manual Altitude, Recommended derating for high altitude operation

Contents

Liebert Static Transfer Switch Page Table of Contents Theory of Operation Alarm and Faults Specifications Communication InterfacesLiebert STS2 Touch Screen Display System Components Event Message Help Text Maintenance Figures Tables Important Safety Instructions Overview of Manual Safety Precautions External Inspections Unloading and HandlingUnpacking and Inspections Internal Inspections Handling ConsiderationsUnit Preparation Location Considerations Recommended Minimum Service ClearancesHeat Output Operating Environment Recommended derating for high altitude operation Altitude Locating the Liebert STS2 Leveling of the Static Switch Without AnchoringLeveling and Anchoring the Static Switch Using Floor Stand Leveling and Anchoring the Unit to the Floor Power and Control Wiring Input And Output Power Connections Input Junction Box Installation-Optional Input/output conduit plate specificationsRating Max. number and size Switch Rating Power and Ground Lug Wire Range Input junction box dimensionsInput junction box terminal wire size range Length Width Height Switch Rating Inches mm CB1 STS1 STS2 CB2 Control Wiring ConnectionsSystem Grounding Source MICB1 MICB2 Isolation Transformer Contact Connection Remote Source Selection WiringPower Supply Remote source selection terminal block Programmable relay board pinout Programmable Relay BoardOptimized Transfer Options Input Contact Isolator Board Comms BoardLiebert IntelliSlot Web/485 Card With Adapter Redundant Output Breaker Key Lockout SwitchLED Display Remote Source Selection Input Junction Boxes and Cables Seismic Floor AnchorsSeismic Floor Stand Outline drawing 100 250 amp Liebert STS2 Installation Drawings Rev Outline drawing 800 1000 amp Liebert STS2 PS211101 Rev PS211401 PS211801 Seismic anchor Seismic anchor drawing 400 600 amp Liebert STS2 System Seismic ANCHORING, Figure Front Drawing 100 250 amp Liebert STS2 with single output breaker Electrical field connections Rev Ground BUS INPUT/OUTPUT BUS Front View Right Side View Drawing 400 600 amp Liebert STS2 with single output breaker PS212401 Drawing 800 1000 amp Liebert STS2 with single output Breaker PS212801 Liebert STS2 non-automatic circuit breaker schedule See Option Location Detail Control connection location diagram 100 600 amp Liebert STS2 Front View with Front Door Removed Option Location Detail Control Wiring See Note J74 J71J72 J73 Table J51 Control wiring for the input contact isolator board option 02-810015-XX DB-9J3 TB3 TB3 TXD RXD GND Control wiring for the RS-232 port Input Junction BOX ColorLCD Load touch screendisplay Mimic Description Symbol Installation drawing, seismic floor stand 100-250A Stand Installation PS215002 Rev PS215003 Rev Height Table Hardware Torque Chart PS216001 Rev PS216002 Rev PS216003 Rev Installation drawing, seismic floor stand 800-1000A Drawing 800 Front Right Isometric View Rear Right Isometric View Right Side ViewDetail a View Side ViewRight Front View System Description Introduction to Liebert STS2 OperationsRedundancy Modes of Operation Bypass Operator Controls Theory of Operation General Description Detailed Component Description SCRs HardwareFirmware Circuit Breakers Audible Alarm Logic Modules6 RS-232 Port Operating Instructions for the Touch Screen Interface Normal System Turn-On Manual Transfer / Preferred Source Selection Settings on Maintenance Bypass Enabling Remote Source SelectionTo manually select the preferred source Touch Screen Viewing Slot for the Source 1 Gate Drive Board Viewing Slot for the Source 2 Gate Drive Board Bypass Procedures for Source To bypass the switch for SourceTo return to the normal mode Normal System Shutdown Shutdown in Static Transfer Switch ModeShutdown in Maintenance Bypass Mode To return to normal mode Event Mask Alarm and Faults Event and History Logs Event LogHistory Log List of Messages Alarm Notes Event messages Alarm Message Description/Cause Action See Configuring the Input Contact Isolator Settings on Communication Interfaces Using the RS-232 Port Connecting and Using a Terminal Terminal commandsKeys Function UPMDR? Configuring the Liebert STS2 via the TerminalGroups Parameter Item Parameter Group settings and values Value ParameterValue types Event Mask User Setting Bitpacked Options with the Terminal Options1Comms Options Hex Critical Option EnablingNon-Critical Option Enabling Binary-hexadecimal conversions Setting Event Masks with the Terminal Putting the Terminal Command Together Examples of Event Mask Settings Liebert STS2 Touch Screen Display Display Overview Backspace Menu Overview Changes disabled Changes enabled Using the Optional Key Lockout SwitchUsing the Password To set or reset the password Menu bar Mimic DisplayEvent Controls Event Display User Settings To access the User Settings dialog boxTo set the event masks Source Set Points User settings dialog box To configure the setpoints for each source Button Range Default CommentsSepoint parameters Liebert STS2 Touch Screen Display Option buttons System SettingsTo access the System Settings menu Comm Options To configure the modem Configuring the Modem Configuring the Input Contact Isolator Settings Configuring Pager Support Input contact isolator dialog box To configure the Input Contact Isolator relays Configuring the Programmable Relay Board Settings Standard settings for programmable relaysRelay Setting Definition Programmable relay board dialog box Dual Output Breaker Liebert SiteScan ConfigurationSaving Your Communications Configurations System Options Remote Source Selection Pole Transfer SwitchShunt Wye Output Transformer To use the Event Log Logs Cleaning the LCD Touch Screen LEDs and Buttons and Key Lockout Switch Operating the Liebert STS2 LED DisplayFront Panel Controls Cause. See 12.0 Communication Interfaces for PC terminal LED and Push Button DescriptionLED and push button description Description Action Normal System Turn On Key Lockout SwitchOperations Event Controls Manual Transfer / Preferred Source Selection 107 If transfer to Source 2 is not desired Maintenance Bypass If transfer to Source 1 is not desired Normal System Shutdown When the Static Transfer Switch is operating on bypass Input/Output Voltage System ConfigurationSpecifications Frequency Response Time GroundingElectrical Requirements Input Surge Suppression Cooling System ComponentsFrame and Enclosure Casters, Leveling and Seismic Anchoring Color Graphical Display or LED Display AccessCable Entrance Doors MTA plug pinout Pin Signal Name Function / Comments15.2.9 RS-232 Port Terminal Port Connections Fuseless Design RS-232 settingsParameter Setting 15.2.11 RS-232 Interface Parameters S1 SCR Open Event Message Help TextS1 SCR Short S2 SCR Short S2 SCR Open 119 120 S1 Volt Sense Fail S2 Volt Sense FailS1 SCR Sense Fail S1 Gate Drive Fail S2 SCR Sense FailS1 Curr Sense Fail S2 Curr Sense Fail S2 Gate Drive Fail Heat Sink Overtemp S1 UV S1 UV RMSS1 OV S1 OF/UF S1 FailS2 UV S2 UV RMS S2 OVS2 UF/OF S2 Fail S2 I-PEAK S1 I-PEAK 130 CB5 S1 BYP Closed 132 133 134 135 136 137 Changing the Air Filter Testing the Liebert STS2Maintenance Proper Tightening of Nuts and Bolts Support Information Channel Programmable Relay Board Settings Record Channel PRB Notes Input Contact Isolator Settings Record Page That Ne tIti Ti n