SERIAL CONVERTER UNITS SK400T48 and SK400T60

Serial converter units SK1400T are switchmode power supplies, aimed primarily for powering of telephone exchanges and other telecom devices as a building block of the S3000 uninterruptible power supply system. They may be used as stand-alone devices for the supply of equipment requiring specified voltages, provided that the power does not exceed 400 W.

Serial converter units are high performance devices featuring low disturbances, low noise and short response time. Output voltage is strictly regulated within the entire range of input voltage and load conditions.

SK400T serial converters are designed for 24 hours autonomous operation, enabling the application in remote locations without crew.

Serial converter units SK400T are manufactured for 48V and 60V output voltage versions. Upon customer request other output voltages are available.


Features

  • Fourth generation of serial converter units since 1988
  • 400 W output power - 8 V, 50 A or 10 V, 40 A
  • 2 output voltages versions: 48 V, 60 V
  • Complies with relevant international standards and recommendations: ITU-T, ETSI, ISO, IEC ...
  • Low psophometric noise < 2 mV
  • High efficiency
  • High reliability
  • Does not require preventive maintenance
  • High frequency switchmode power conversion
  • Parallel operation of several units with no inherent limitations

Applications

  • Uninterruptible power supply of telecom equipment
  • Uninterruptible power supply of computer and other proffesional electronic equipment
  • Increasing capacity of S3000 power supply system
  • Providing auxiliary 60V power from 48V unuiterruptable power supply system battery

Benefits

  • Extremely robust, resistant to harsh working conditions, specialy to damaging input disturbances
  • Similar in design to I1400T rectifier units in S3000 system - visualy compatible
  • Large LED display with switch for output current/output voltage selection
  • Fully plug-in installation
  • Natural convection cooled
  • Easily adjustable using front panel potentiometer

For electronic systems and other loads requiring strictly regulated supply voltage even during discharge of storage batteries, SK400T serial converter units, together with I1400T rectifier units in S3000 power supply system, offer modern and completely modular solution.

Serial converters SK400T48 and SK400T60 are modern, highly professional devices, featuring exceptional electrical characteristics, simple handling and high reliability.

Serial converters SK400T48 and SK400T60 are designed for international market and are available in english, russian and serbian versions.


Technical data

Input data SK400T48

Input voltage Vu   48 Vdc
Input voltage range   38..56 Vdc
Input current   10 А @ Vnom
Inrush current   < 12 А
Input circuit breaker   magnetic 15 А
Overvoltage protection   57 Vdc
Undervoltage protection   36 Vdc
Voltage surges protection   varistor

Input data SK400T60

Input voltage Vu   60 Vdc
Input voltage range   47..70 Vdc
Input current   8 А @ Vnom
Inrush current   < 10 А
Input circuit breaker   magnetic 15 А
Overvoltage protection   72 Vdc
Undervoltage protection   46 Vdc
Voltage surges protection   varistor

Output data SK400T48

Nominal voltage   8 Vdc
Voltage range   0 .. 8 Vdc
Regulated voltage   49 Vdc
Regulated voltage range   45 .. 54 Vdc
Nominal current   50 А-
Current limit   55 Аdc
Overvoltage protection   57 Vdc
Undervoltage protection   39 Vdc

Output data SK400T60

Nominal voltage   11 Vdc
Voltage range   0 .. 11 Vdc
Regulated voltage   65 Vdc
Regulated voltage range   59 .. 70 Vdc
Nominal current   36.4 А-
Current limit   40 Аdc
Overvoltage protection   72 Vdc
Undervoltage protection   48 Vdc

Output data

Output power   400 W
Voltage regulation   боља од 1 %
Response time   1 msec
Voltage spikes   < 2 Vp-p
Psophometric noise   < 2 mVeff
Voltage ripple   < 50 mVp-p

General data

Efficiency   > 0,75
Temperature range   0 °C .. 45 °C
Storage   -10 °C .. 70 °C
Relative humidity   0 .. 75 %
Switching frequency   50 kHz
Measuring/display accuracy   ±1 %
Dimensions h x w x d   224 х 126 Х 383 mm
Weight   4,8 kg
Service life   40 years
Spare parts   10 years

Product Code
Serial converter SK400T48 E08-SKJA0201-V▲▲-◆◆
Serial converter SK400T60 E08-SKJA0201-A▲▲-◆◆
Packaging for SK400T.. E11-SKJA0201-А-◆◆
User documentation for SK400TE08-SKJA0201-D01-◆◆

▲▲ voltage

   48: 48 Vdc, 60: 60 Vdc, 24: 24 Vdc, 110: 110 Vdc

◆◆ language

   SR: serbian, RU: russian, EN: english

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