Tripp Lite SU60KX manual Operating Principles, System Layout, Internal Battery Layout

1 Basic Operation (continued)

1.3 Operating Principles

1.3.1 System Layout

MAIN

Q3

Manual Bypass

Circuit Breaker

	Manual Input
	Bypass Input
Q2
Bypass Input	STS
Circuit Breaker
	Main
Q1	20kVA/3U POWER MODULE	Q4	LOAD
Main Input		Output
Circuit Breaker		Circuit Breaker

20kVA/3U POWER MODULE

20kVA/3U POWER MODULE

20kVA/3U POWER MODULE

BATTERY

Fig 1.3.1a System Block Diagram for KX models

Q3

Manual Bypass

Circuit Breaker

					Manual Input
					Bypass Input
					STS
					20kVA/3U POWER MODULE	LOAD
MAIN	Q2	XFMR		Q1		XFMR
	Bypass Input			Main Input		Q4
	Circuit Breaker		Circuit Breaker		20kVA/3U POWER MODULE	Output
						Circuit Breaker

20kVA/3U POWER MODULE

20kVA/3U POWER MODULE

BATTERY

Fig 1.3.1b System Block Diagram for K and KTV models

The SU-Series 3-Phase UPS is configured with 3-phase 20kVA power modules that can be paralleled for redundancy or capacity upgrades. Each KX- (Figure 1.3.1a), K- , and KTV-series (Figure 1.3.1b) UPS includes three key functions:

1)A central bypass static switch, which causes a critical load to automatically bypass any overload or fault conditions that occur.

2)A maintenance bypass switch, which eliminates UPS faults by supplying a critical load.

3)A matched transformer, which increases and decreases the input/output voltage

1.3.2Internal Battery Layout

B+ N B-

12Vdc, 20pcs 12Vdc, 20pcs

Fig 1.3.2a Battery Strings

An internal battery pack (number of packs vary by model) supplies the UPS system with battery backup power. Each internal battery pack consists of 40 12Vdc VRLA batteries arranged in two strings: one string of 20 positive batteries (black cable) and one string of 20 negative batteries (red cable). The two strings are connected by a neutral (N) point (Figure 1.3.2a).

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