B-LP Series DC Isolating Amplifiers

Applications :   

• Current sensing - using external Shunt
  1. DC Drives of any rating
  2. Traction Motors
  3. AC Drives
  4. Battery Chargers
  5. Switch Mode Power Supplies
• Voltage sensing - using voltage dividers
  1. Power Systems
  2. DC Drives
  3. AC Drives
• General Purpose Analog Signal Isolation
• Feedback signal isolation for Switched Mode Power Supplies

Features :      

• Optical Isolation
• Immune to magnetic fields
• Advanced Sigma-Delta A/D Conversion  technology and Chopper stabilized amplifiers to achieve high linearity and low drift.
• Wide choice of input voltage

B-LP Series Isolating Amplifiers are based on optical isolation methods using high speed GaAI LED and a high speed noise shielded detector. Unlike the conventional Hall effect device based systems, optical isolation systems are totally immune to surrounding magnetic fields.

The analog input voltage is converted into digital signal using advanced Sigma- Delta conversion techniques, transferred across an isolation barrier optically inside an optically sealed enclosure and converted back into analog form. Fig. below shows the block schematic of the unit.

The device requires only one auxiliary power supply. The isolated power supply for the input side of the device is generated internally using Switched Mode power supply techniques. The Signal ground of the isolated analog output is connected to the auxiliary input supply ground.

Specifications :    

All specifications apply @ +25 degree C ambient unless otherwise stated

Input Specifications :
Input Voltage	:	See Table 1
Input Resistance	:	>5Mohm
Output Specifications :
Output Voltage	:	10V
Non - Linearity	:	0.5 %
Output current	:	10mA
Auxiliary Power Supply Specifications :
Supply Voltage	:	+15V,0,-15Vdc
Tolerance	:	±5%
Consumption	:	+40mA, -10mA
Isolation Specifications :
Maximum working Insulation Voltage	:	600VRMS
Input-Output Isolation Voltage	:	3000VRMS
Input-Output Isolation resistance	:	>100Mohms
Environmental Specifications :
Storage temparature	:	0 to +80 deg. C
Operating temperature	:	0 to +50 deg. C
Physical Specifications :
Enclosure Mounting	:	Panel, Corner Screws, 35mm DIN Rail
Enclosure Material	:	ABS
Weight	:	approx. 160g

Table 1 :
Input Voltage	Type No.
600Vdc	B-LP 01
300Vdc	B-LP 02
100Vdc	B-LP 03