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PRD_LPS_31E_8K0_20K_1GB_V021.doc 

Product Description 

LP 31 Series

 

 

1. INTRODUCTION 

The 

LP 31 Series / 8 – 10 – 15 - 20 kVA

 UPS series is a compact, truly On-line 3-phase in 1-phase out 

system which incorporates the most advanced power electronics technology to provide exceptional 
protection for electrical equipment. 
 
 
 
 
 

2. FUNCTIONAL EXPLANATION 

 

2.1  Principles of Operation 

The UPS stores electric energy in batteries housed in the unit. 
This allows the system to supply output power even when the incoming mains power is cut off 
completely. 
Energy is stored as Direct Current (DC), but input and output energy must be Alternating Current (AC) in 
sine wave form.  
The UPS therefore contains an input converter (AC to DC) and an output converter (DC to AC) (Figure 1). 
 
The 

LP 31 Series / 8 – 10 – 15 - 20 kVA

 UPS is a SECOND GENERATION On-line UPS with: 

•  battery not in line with the DC link, resulting in: 
  - enhanced battery life; 
  - optimal battery charging; 
•  full wave input converter with power factor correction; 
•  extremely wide input voltage and input frequency tolerance; 
• output 

converter 

(inverter) using IGBT technology. 

 

 

 

Figure 1 - Block diagram of the LP 31 Series / 8-10-15-20 kVA UPS, mains present

 

 
The UPS needs two separate mains: 
One three phase + neutral input mains and a single phase bypass mains. The neutral is essential. 

Содержание Digital Energy LP 31 Series

Страница 1: ...rgy Uninterruptible Power Supply LP 31 Series 8 10 15 20 kVA 400 VAC CE Series 1 Manufactured by GE Consumer Industrial SA General Electric Company CH 6595 Riazzino Locarno Switzerland T 41 0 91 850 5...

Страница 2: ...itions 4 2 3 Mains Failure 4 2 4 Bypass operation 5 3 EXTERNAL DESCRIPTION 6 3 1 Front and Rear Panel 6 3 2 The LCD screen 6 3 3 Alarm Conditions 7 4 STANDARD FEATURES 8 5 INTERFACING 9 5 1 ComConnect...

Страница 3: ...tely Energy is stored as Direct Current DC but input and output energy must be Alternating Current AC in sine wave form The UPS therefore contains an input converter AC to DC and an output converter D...

Страница 4: ...2 3 Mains Failure In the event of a mains power failure i e absent or outside tolerance the output converter uses the energy reserve stored in the battery to continue to produce AC power ensuring unb...

Страница 5: ...onverter is unable to deliver the demanded output power overload overtemperature the bypass switch will automatically transfer the load to the mains If bypass operation is caused by an overload situat...

Страница 6: ...terfaces ComConnect RS232 LCD screen 2 x 16 characters Potentialfree contacts Push buttons down enter reset up CardConnect slot Buzzer resettable Manual bypass switch Inverter on off switch Input Outp...

Страница 7: ...e Service information on internal components fan speed internal DC voltage internal temperature levels peak input voltage mean bypass input voltage mean output voltage Start of a quick battery test Fo...

Страница 8: ...m level The test will after a complete recharge result in new autonomy predictions Communications port ComConnect 9 pin Sub D male plug No load shutdown Whenever the load is 2 of the maximum load and...

Страница 9: ...red conditions include mains voltage availability discharge level of batteries temperature of the batteries interactive control and diagnostic information for stand alone and network systems Interface...

Страница 10: ...o the user 6 2 Alarm Boxes An interface box linked to the ComConnect port the VIC RELAYBOX 01 translates the ComConnect signals to five independent changeover contacts with a maximum switching capacit...

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