Liebert SmartSwitchTM operation manual Operating Guidelines

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5.0OPERATING GUIDELINES

After installation, the following operating guidelines can be used for standard equipment opera- tion. These guidelines should be reviewed for any special equipment modifications, special site conditions, or company policies that may require changes to these operating guidelines.

Initial System Turn-On.After the initial installation, equipment relocation, or extended period of inoperation, perform the initial system checkout. Have an electrician or other qualified electri- cal service person verify that the unit has been properly installed and connected to the input sources, including having the proper supply overcurrent protection and having the required quan- tity and size of input and output conductors based on the unit rating. Verify that both input power sources have a nominal voltage and frequency that match the unit rating. Verify that the two input power sources are synchronized. With load disconnected or turned off, and the Bypass/ Transfer Control switch is in the “Normal” position, apply power to one of the SmartSwitch inputs. Verify that the SmartSwitch recognizes that the source is available and transfers to that source. Apply power to the second input and verify that the SmartSwitch recognizes that source is available, the transfer inhibit indicator is OFF, and transfers to the preferred source. Use the nor- mal operating procedures to verify proper SmartSwitch operation in all modes before connecting the load equipment. Failure of the SmartSwitch to operate properly may be due to installation errors, the power sources not being synchronized or otherwise compatible with the SmartSwitch ratings, or SmartSwitch failure. For assistance contact Liebert Global Services (in the U.S.,

1-800-LIEBERT)or your local Liebert sales representative. After verifying proper SmartSwitch operation in all modes, connect the load equipment and verify proper load operation in all Smart- Switch operating modes.

After completing the initial system Turn-On, refer to the following operational guidelines for standard equipment operation.

Normal System Turn-On.The SmartSwitch can be started with either or both input power sources available and the Bypass/Transfer Control switch in any position. If the Bypass/Transfer Control switch is not in the “Normal” position, refer to the instructions pertaining to that position of the switch to return the Bypass/Transfer Control switch to the “Normal” position. If the Bypass/Transfer Control switch is in the “Normal” position, the SmartSwitch will automatically transfer the load to whichever source is first available. If both sources are available and synchro- nized, the SmartSwitch will transfer the load to the designated preferred source. For automatic source failure protection, the Bypass/Transfer Control switch must be in the “Normal” position.

Manual Transfer to Source 1. Rotating the Bypass/Transfer Control switch to the “Man. XFER S1” position initiates a manual transfer to source 1. If the load is not currently connected to source 1, the SmartSwitch will transfer the load to source 1 if source 1 is available and synchro- nized. If the load is connected to source 1, the SmartSwitch will keep the load connected to source 1, even if source 1 fails. The “Man. XFER S1” position is intended to be used for test transfer pur- poses and to ensure that the load is connected to source 1 before bypassing to source 1.

Manual Transfer to Source 2. Rotating the Bypass/Transfer Control switch to the “Man. XFER S2” position initiates a manual transfer to source 2. If the load is not currently connected to source 2, the SmartSwitch will transfer the load to source 2 if source 2 is available and synchro- nized. If the load is connected to source 2, the SmartSwitch will keep the load connected to source 2, even if source 2 fails. The “Man. XFER S2” position is intended to be used for test transfer pur- poses and to ensure that the load is connected to source 2 before bypassing to source 2.

Bypass to Source 1. From the “Normal” position, rotate the Bypass/Transfer Control switch to the “Man. XFER S1” position to initiate transfer of the load to source 1. Use the indicator lights to verify that source 1 is available and the load is connected to source 1 before rotating the Bypass/ Transfer Control switch to “Bypass To S1” position. If source 1 is not available and the load is not connected to source 1 before the switch is rotated to the “Bypass To S1” position, power to the load may be interrupted. If the load is connected to source 2 and the SmartSwitch will not transfer the load to source 1, initiate a bypass to source 2.

Bypass to Source 2. From the “Normal” position, rotate the Bypass/Transfer Control switch to the “Man. XFER S2” position to initiate transfer of the load to source 2. Use the indicator lights to verify that source 2 is available and the load is connected to source 2 before rotating the Bypass/

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Contents Power Protection SmartSwitchPage Table of Contents Figures Important Safety Instructions Introduction SpecificationsElectrical Specifications Enclosure SmartSwitch RatingsConnector Receptacle Voltage No. of Conductors Designation Phase Neutral Gnd Poles Amps Type Refer toLocation Considerations Unpacking and InstallationWire Size Tightening Torque Input and Output Power ConnectionsLb.-in N-m 17.25 18.5 469 Typical 25 to 60 Amp SmartSwitch Underfloor / Wallmount Unit Typical Input and Output Power Connections Grounding Control Wiring ConnectionsIndicator Description Description of SmartSwitch OperationStatus Indicators SmartSwitch Status Indicators RS-232 Communications Port RS-232 Ascii Communication Port Customer Commands Example View Status Response Example View Event Log Response Example View Settings ResponseLogged Events include Operator Controls Bypass/Transfer Control SwitchOperating Guidelines Operating Guidelines Maintenance Maintenance Technical Support Automatic Transfer Switch
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