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30 CH PCM PRIMARY MUX/DEMUX

The PCM 30 Primary PCM muldex provides flexible, modular solution for connecting analog telephone exchanges with 2 MB/S digital links.
It provides 30 flexible data and voice channel multiplexing through time slot allocations.

Model No. SPCM-30

Model No. 48/60/1.5DL

DC/DC CONVERTER

SBOM Dual output dc converter is a custom built model from series DC/DC Converter. The unit works on 48V DC input and provides 48V outputs viz +60V/1.5A. Both the outputs are fixed to +60 V & -60V are perfectly regulated against load and output variations. The outputs also have over voltage protection and indications.

The unit employs an office PWM technique working at very high frequency of conversion of power so as to keep the efficiency well above the required mark.
Technical Specifications  
Technical Specifications for : +60V/1.5 A. DC power pack working of 48V DC.
1) Input Voltage : -40V to –56V
2) Output Voltage : +60 (+ /-4V) ,Normal +/- 60V DC
3) Output Current : 1.5 Amp on either one or both simultaneously.
4) Output Load Variation : +1% for specified input range with 10% load
5) Line Regulation : +1% for specified input range with 10% load
6) Output Ripple : 50 mV Peak to Peak
7) Efficiency : >75% at normal voltage at normal load
8) Protection
: a) Over current protection at 110% load output.
  b) Over voltage/Under voltage at the output 65V & 55V respectively.
  c) Over voltage/Under voltage at the input 56V & 40V respectively.
  d) Short circuit protection.
9) LED Indication :  a) Input ON
   b) Output ON for +/-60V
   c) Output Overload indication
   d) Over voltage/Under voltage for I/P and O/P
   e) Trip indication
10) Panel meter
:  a) Voltmeter 3 digit separately for +60 V & -60V
   b) Ammeter 2 digit separately for +60V & -60V
(Resolution 0.1 A) Accuracy +/-1% for 2 counts
   
Note: Only one section is described further as both the sectional are electrically identical. Performance to be checked after ½ hour warm up time
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