Panel Meter,Transformer,Voltage Regulator/ stabilizer,Rectifier,Transducer,Break down tester,Test Bench,Relay test kit,Energy saver,Test measuring instruments Panel Meter,Transformer,Voltage Regulator/ stabilizer,Rectifier,Transducer,Break down tester,Test Bench,Relay test kit,Energy saver,Test measuring instruments

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P.T. TESTING UNIT
Panel Meter,Transformer,Voltage Regulator/ stabilizer,Rectifier,Transducer,Break down tester,Test Bench,Relay test kit,Energy saver,Test measuring instruments
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DESCRIPTION
It compares & reads the error due to imbalance in signals of test P.T. with reference P.T. and applies necessary proportional signal to nullify the error. Input is displayed in percentage or actual value, and phase error in centiradians or minutes.
On separate key commands the error readings with date, time,% input & burden are sent either to a PC through RS232C port or to a printer connected to parallel port, in order to have report in "view format". The data read from RS232C port can be arranged by using any standard text editor, and a printout can be taken.

FEATURES
Micro processor controlled
Self zero check and calibration check
Digital display of %input, ratio error and phase error.
Programmable voltage input
Manual and auto ranging modes
RS 232C port and parallel port for printing
Built in real time clock
Parameter entry through keyboard

ELECTRICAL SPECIFICATIONS
TYPE Single phase
OPERATING VOLTAGE 3 to 110V AC, 0.5VA
AUXILLARY SUPPLY 11OV / 240V. AC 20%, 50 / 60Hz, 60VA.
ACCU RACY 0.5% of rdg 1 %of range
FREQUENCY 45Hz to 55Hz or 55Hz to 65Hz
ERROR RANGES 20% (19.99% ratio error and (19.99cR* or 680 mins.phase error))
    2%(1.999% and (1.999cR or 68.0 mins.))
    0.2%(1999ppm and (1999R or 6.80 mins.))
    (cR = Centiradians, R = Microradians, ppm = Parts Per Million).
RESOLUTION 0.1 Vac
MEASURING TIME 7 seconds, irrespective of signal level and error range.
OUTPUTS RS232C port & Parallel port (data in ASCII format).
INSULATION RESISTANCE Greater than 20 Mohms at 500V. DC.
DIELECTRIC STRENGTH 2kV RMS for 1 minute
OPERATING TEMP. 0C to 55C
STORAGE TEMP. - 20C to 70C
HUMIDITY Upto 95% RH

MECHANICAL SPECIFICATIONS
MODEL PTU
SIZE 180 x 320 x 450 mm
WEIGHT(Appro.) 8.0 kg.

KEYBOARD CONTROLS
0 - 9 Numeric keys to enter values.
. Decimal point.
ENT Enter key. And also to enter voltage input.
RTC Enter date and time.
SR / VA Enter serial no. and burden.
PRINT Take printout of error readings.
SER Send data to serial port.
% / ACT Display input in percentage or actual value.
DEG / RAD Display phase error in minutes or centiradians.
ZERO Check auto zero.
CAL Test self calibration.

DISPLAYS and INDICATIONS
4Digit LED display to indicate input voltage, ratio error and phase error.
LED indications for following quantities
  1) % Input
  2) Minutes and centiradians.
  3) Range for 20%, 2%, 0.2% and Auto
  4) Balance, overrange, zero and callibration.

PRINTING
Date, time, serial no., input(% or actual value), burden, % ratio error, & phase error
(minutes or centiradians).

Ordering information
1) Type 2) Model 3) Operating voltage 4) Operating frequency.
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