Stemar Electrical Products Pty Ltd

Site

Stemar Electrical Products Pty Ltd

Accreditation No.

14769

Site No.

14870

Date of Accreditation

17 Jul 2003

Address

243 Milperra Road
Revesby, NSW 2212
Australia

stemar.com.au

Contact

Mr Marcus Maraldo P: +61 (02) 97712100

Availability

Services conditionally available to external clients

Scope of Accreditation

ISO/IEC 17025 (2017)

Calibration

  • The uncertainty of measurement is reported as an expanded uncertainty having a level of confidence of 95% unless stated otherwise
Service Product Determinant Technique Procedure Limitations
DC and low frequency electrical metrology - High-voltage/high-current standards and equipment Current transformers Current error; Phase displacement Comparison with a reference standard

Accuracy tests at 50 Hz with rated primary currents up to 8000 A and
rated secondary currents up to 5 A, at 0.6 to unity power factor burdens

Capability

with Calibration and Measurement Capability of -

0.03% for current error

1.5 minutes for phase displacement

ISO/IEC 17025 (2017)

Infrastructure and Asset Integrity

Service Product Determinant Technique Procedure Limitations
Evaluation of high voltage/power equipment and components - Performance Transformers and inductors Accuracy tests; Class determination for protection CTs; Induced high voltage; Magnetising curves; Polarity; Power frequency withstand; Temperature rise; Winding resistance Not applicable

by the methods of -

AS 1675-1986 - Current Transformers-Measurement and Protection,
AS 60044.1 - Instrument Transformers-Current Transformers,

AS 60044.1-2003 -Instrument Transformers-Current Transformers,
IEC 60044-1:2003 - Instrument Transformers-Current Transformers,
IEC 61869-1 - Instrument Transformers-General Requirements,
IEC 61869-2 - Instrument Transformers-additional requirements excluding class,
TPX, TPY and TPZ protective transformers in respect of transient performance,
IEEE C57.13 - Standard requirements for Instrument Transformers.

Accuracy tests at 50 Hz with rated primary currents up to 8000 A and
rated secondary currents up to 5 A, at 0.6 to unity power factor burdens
Polarity checks, magnetising curves and power frequency and
induced high voltage tests at voltages up to 30 kV

The only data displayed is that deemed relevant and necessary for the clear description of the activities and services covered by the scope of accreditation.

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