NEC 2000 IPS manual System Power Supply and Cooling Fan

Chapter 2 System Architecture

System Power Supply and Cooling Fan

AC/DC Power Supply

The AC/DC Power Card is mounted in the rear side of each MODULAR CHASSIS. The AC/DC Power card provides power to all circuit cards, which are resided in the MODULAR CHASSIS.

AC power requirements are as follows:

Input Voltage: 85 to 264VAC, 50/60 Hz (Auto sensing 100V/200V selection)

			AC/DC Power Card
	Description	Qty		Remarks
	PZ-PW131	1 per MODULAR CHASSIS		AC/DC Power Supply
				Output:+5 V, 5.5A, -27 V, 3A
Back-up Power

UPS or battery backup (with external battery) is available for backup power for AC power failure. In case of battery backup, sealed type battery should be used. The open type battery is not available because of AC/DC power specifications.

		Required Battery Capacity
	Battery Backup Time		Required Battery Capacity
	10 minutes (Built-in battery)		12VDC, 0.8AH x 2
	30 minutes (External battery)		12VDC, 2.2AH x 2
	3 hours (External battery)		12VDC, 12AH x 2
Ring Generator Unit (RGU)

The RGU provides ringing supply to analog SLT (PN-4LCAA is no longer required); however, it cannot ring more than 6 analog SLT’s per MODULAR CHASSIS simultaneously. Therefore, the simultaneous ringing has to be limited by office data setting.

Ring Generator Unit (RGU) Card

	Description	Qty	Remarks
			Ring Generator Unit
	PZ-PW139	MODULAR CHASSIS	Ring Voltage: 85/75Vac
			Ring Current: 0.05A
Cooling FAN

The cooling FAN is mounted at the right side of each MODULAR CHASSIS. The FAN should be replaced every 4 years in order to ensure the cooling system.

		Cooling FAN
Description	Qty		Remarks
109P0624H	1 per MODULAR CHASSIS		Each Modular Chassis is equipped with a
7D09 FAN			Cooling Fan this part is for replacement only

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