Patek

pt_ELECTRICAL_2 valiu_2017 PONOVO GLOBECORE CA

Winding Resistance Meter TRM 25

Email

Product: Winding Resistance Meter
Model: TRM 25
Manufacturer: SCOPE
Description

Overview

  • Designed to measure DC winding resistance of highly inductive test objects - Transformers, Generators, Motors etc. for field testing as well as for factory testing
  • Designed to work reliably under live EHV switchyard conditions ensuring operator's safety and repeatability of results
  • Winding Resistance Meter designed for large transformers up to 500MVA
  • Quick stabilization of reading even on large test objects by deploying high open circuit voltage
  • Quick & simple tool to check the condition of OLTC - discontinuity during tap change, if any
  • Direct display of Resistance values
  • Available for continuous testing - powerful, truly continuous DC source with excellent heat management through forced cooling
  • Total instrument and human safety ensured through automatic & quick back-emf discharge after test completion
  • Discharge possible through either voltage or current lead in case of accidental lead disconnection - operator risk is minimized

Features

  • Injects test current of 25A DC for measuring winding resistance as high as 800mΩ
  • Has three voltage input (resistance) channels, one temperature input channel and one test current channel
  • Saves down time, measurement of resistance of 3 windings simultaneously
  • In-built stable DC source and direct display of resistance value
    • Single compact instrument
    • No need to spend time in bridge balancing
    • No need of manual calculation
  • Backlit graphic LCD with a user-friendly menu sets up the instrument for the test
  • Configuration
    • Permits enable / disable of measuring channels
    • Automatic Temperature correction settings
    • Winding material selection
    • Selection of print / download intervals
    • RTC setting etc.
    • Test setup: Current range selection, enable / disable of printing, downloading, alarms etc.
    • Record handling: Save, print, download and recall.
  • Easy to use - self guided operation through interactive menu and keyboard
  • Can be operated in standalone mode or controlled through external PC/Laptop
  • No need to compensate lead resistance as Kelvin's Four wire measurement method is used
  • Authentic data management through onboard memory, PC connectivity & downloading software
  • Tamperproof test results through Inbuilt Thermal Printer
  • Displays, prints and stores test reports in the form of text header and tabulated test results
  • Housed in rugged case enhancing transport-worthiness

Specification

Resistance Channel

Three

Temperature Channel

Yes

Current Range

25A, 10A, 5A, 1A, 100mA & 10mA Selectable

Resistance Range

800µâ?¦, 2mâ?¦, 4mâ?¦, 8mâ?¦, 20mâ?¦, 40mâ?¦, 80mâ?¦, 200mâ?¦, 400mâ?¦, 800mâ?¦, 2â?¦, 4â?¦, 20â?¦, 200â?¦ & 2000â?¦

Best Resolution

0.1μΩ

Accuracy

Value ± 0.5% ± 2 Digits

Display Resolution

Resistance : 4½ Digit (1 count in 19999 counts), Current : 3½ Digit (1 count in 1999 counts)

Open Circuit Voltage

50V DC

Protection

Back EMF, Over Temperature, Accidental Disconnection of Lead

Discharge

Automatic

OLTC Test

Yes

Temperature Correction

Yes

Instrument Display

256 X 128 pixel, backlit graphic LCD.

Memory

5000 results

Inbuilt Printer

Yes

PC Connectivity

Yes

Power Supply

230V AC ± 15%, 50Hz ± 10%, 1 Phase

Dimension

585 x 480 x 195mm

Instrument Weight

20kg

Models & Accessories

  • Standard Accessories
    • Test Cables 15m long, with CK clamps, 75mm opening - Set
    • Shorting lead, 10m long, with 75mm CK clamps - 1 Set
    • Master Earthing Cable, 7m long - 1 Set
    • Mains Cord, 3m long - 1 No
    • RTD sensor with 10m long lead and connectors - 1 No
    • Spare fuses - 1 Set
    • Carrying Case for Instrument - 1 No
    • Carrying Case for Test Lead Set - 1 No
    • Paper Roll - 1 No
    • Operation cum Instruction Manual - 1 No
    • Factory test & Calibration Certificate
    • Warranty Certificate
  • Optional Accessories
    • C Trans : Communication, Operation & Data Downloading Software in CD media - 1 No
    • PC Communication cable - 1 No
    • A box of paper rolls containing 10 rolls of thermal paper - 1 Set
    • Test Cables 15m long, with CK clamps of 100mm opening - 1 Set
    • Test Cables 15m long, with CK clamps of 150mm opening - 1 Set
    • Test Cables 20m long, with CK clamps of 75mm opening - 1 Set
    • Test Cables 20m long, with CK clamps of 100mm opening - 1 Set
    • Test Cables 20m long, with CK clamps of 150mm opening - 1 Set