Kelvin Bridge: 

• Standard Resistance: There are 10 coils of .01 ohm each arranged on a rotary dial plus a circular slide wire of total resistance .01 ohm and 500 sub-divisions is equal to .00002ohms on the normal range.

• Multiplying Ratios: A single rotary switch furnishes 5 multiplying ratios of x100, x10, ×1, ×.1 and 0.01

• Range of Measurement: The Bridge has a range of 2micro to 11 ohm.

• Panel: A Bakelite panel enclosed in a teak wood box is used.  Separate current   and   potential   terminals battery and galvanometer terminals, push buttons for battery and galvanometer are provided on the panel.

• Max. Current: 10A intermittently & 5 A continuously.

• Accuracy: ±0.5% current 5 Amps up to 10Amps

• Coils: Managanin Coils are used. This bridge is very suitable for the use of wires & cable manufacturers. It is being extensively used for finding the resistance of transformer winding, contact resistance of relays etc.

• Adjustable Heavy Duty D.C. Current Source The unit is mains operated and can deliver a continuously adjustable D.C. Current of 0-10 Amp maximum. The unit consists of a Variac, a step down transformer, a bridge rectifier, filter circuit and an ammeter of 0-10A to read current. Two heavy brass terminals are provided for output.

• Input Voltage: 230volts A.C. Mains 50c/s

• D.C. Output: Approximate 0-10V, continuously adjusted o give a variable current of 0-10Amp depending upon external load.

• Conductivity attachment: It is an arrangement to hold specimens in the form of wires, rods strip etc. Separate current & potential terminals are provided. Distance between potential points is 50cm. It can hold specimen of any size between ½” dia rods to 42 S.W.G. Wires.

• Spot Galvanometer finds extensive use as a D.C. null detector in wheat stone bridges and potentiometers

Spot Galvanometer

• MAINS: It is a' mains' operated instrument but can operate on a 6 volt battery also. There is provision to operate this instrument can be operated on both as well as main supply 220 volts, 50Hz or 6 Volt Capacity.

• Light Source: The light Source is 6 Volt and 0.3Amp bulb giving a bright spot on the scale. 

• Construction: The galvanometer has built in lamp and scale arrangement and housed in a Bakelite case. The highly sensitive moving coil system is suspended in a taut band manner in a uniform field of permanent magnet.

• Scale: The scales are 150mm long and end zero use. 

• Zero Adjustment: The spot of light can be set at any point on the scale with the help of zero adjusting knobs.

• Sensitivity Control: The sensitivity is controlled by a 2-pole, 6 way switch. The switch Positions are D,1/10,1/100,1/1000 and s/c 

• Working Voltage  :  220VAC 

• Time Period        :  2 seconds

SALIENT FEATURES:

• Front panel built with high class insulated Printed Circuit Board sheet with well printed circuits and      symbols.

• Instruction manual.

• Connections are brought out through 4mm Colored Sockets.

• Patch Cords 4mm.

• The trainer is housed in ABS Plastic cabinet.

• Size of the trainer set 12”x10” 

PACKING LIST:

• Industrial Kelvin Double Bridge 

• DC Current Source 

• Conductivity Attachment 

• Spot Reflecting Galvanometer 

• Special Heavy Leads 4mm.