Hubbell LXi 2100 specifications Automatic Transfer Switch

The event alarm caches shall be compartmentalized, and no compartment shall over-ride any other compartment. The compartments allow for analysis of four types of information events without having to look through all events including those not related to a problem. Events shall be shown with Date and Time for each event occurrence:

1.Events that have occurred during a pump idle period

2.Events that occurred during the last start period

3.Events that occurred during the last run period

4.Events that occurred during the last stop period.

The LED displays shall be mounted on the enclosure flange and have an LED for the following, with provisions for three spare LED’s to be available and programmable for other options or event displays.

Power Available	Fail to Start	Lockout On	Low Suction
Phase Reversal	Run Timer On	Pump Start Delay On	Shorted SCR
Pump Running	Locked Rotor	Overload	Overtemp SCR
Pressure Switch Start	Local Manual Start	Remote Start	Emergency Manual Start
Local Manual Stop	Start Timer/Accelerate

The LED displays shall be mounted on the enclosure flange and have an LED for the following:

Programming of the LXi logic shall be from the touch pad mounted on the enclosure flange. Programming shall be password protected so that only authorized personnel can change the logic functions. The fire pump controller shall be Model LXi 2100 equipped with LXi Logic as manufactured by Hubbell Industrial Controls, Inc.

Automatic Transfer Switch

The fire pump automatic transfer switch shall be electrically operated - mechanically held on both the emergency and normal power source sides, and rated for continuous duty in an unventilated enclosure. The transfer switch shall be rated and listed for fire pump service and be UL 1008 listed and FM Approved, and shall be electronically controlled for automatic switching, and capable of manual operation.

The transfer switch logic shall monitor the emergency power source for all three phases before permitting transfer from the normal source. Transfer switches monitoring only two phases of either source are not acceptable. The fire pump automatic load transfer switch specified shall include the following features:

∙Full Phase Protection – the solid state phase monitor shall be a field adjustable, close differential type, with 85-100% pickup and 75- 98% dropout. A single adjustment shall set all phases.

∙Solid state, three phase voltage and frequency monitor on generator output to prevent transfer prior to proper output parameters, adjustable 85-100% of generator voltage and frequency, with adjustable dropout of 75-85% setting.

∙Adjustable 2 to 30 minutes on retransfer of load to normal.

∙Adjustable 2 to 30 minutes cool-down timer when the generator set runs unloaded after retransfer to line.

∙Motor load decay time delay, adjustable from 1.5 to 15 seconds and operating on transfer to either source.

∙Adjustable 0.5 seconds to 5 minutes time delay on transfer to emergency source after verification of emergency source voltage and frequency.

∙Test switch to simulate normal power failure.

∙Phase loss and phase reversal monitor to initiate transfer to emergency power.

∙“Normal” and “Emergency” position LED’s.

∙Engine start contacts for generator.

∙Aux. contacts for normal and emergency positions.

∙Emergency source isolating switch/motor circuit protector, as a means of disconnect. The switch shall include aux. contacts to inhibit engine starting when switch is open.

∙Audible and visual alarm to indicate isolating switch is open, with “Normal-Silence” selector switch and re-ring function.

∙Push button to bypass retransfer to normal time delay.

The following diagnostic LED indications shall be provided:

Normal Source Voltage O.K.	Green LED
Emergency Source Voltage O.K.	Red LED
Emergency Frequency O.K.	Green LED
Transfer to Emergency Timing	Red LED
Transfer to Normal Timing	Red LED
Engine Running Unloaded Timing	Red LED

The transfer switch shall be model LX450 as manufactured by Hubbell Industrial Controls.