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Electronic Instrument Transformer Test Set
Electronic Instrument Transformer Test Set DCM-330 is designed for verifying electronic instrument transformer’s ratio error and angle error, while it also can verify the ratio error and angle error of traditional class 0.2 and below instrument transformer.
1) Verify low level analog signal of electronic instrument transformer.
2) Verify electronic instrument transformer based on IEC61850-9-1 digital output frame format.
3) Verify electronic instrument transformer based on IEC61850-9-2 digital output frame format.
4) Verify electronic instrument transformer based on IEC61859 9-2LE digital output frame format.
5) Verify electronic instrument transformer based on IEC60044-8 FT3 digital output frame format.
6) Verify electronic instrument transformer(5M bps) based on SGCC FT3 LE digital output frame format.
7) Verify traditional instrument transformer.
●IEC60044-7: 1999 Instrument transformers-Part 7:Electronic voltage transformers(GB/T 20840.7 -2007)
●IEC60044-8: 2002 Instrument transformers-Part 8:Electronic current transformer(GB/T 20840.8 -2007)
●IEC 60044-1: 2003(GB1208-2006) Current transformers
●IEC61869-2: 2012(GB20840.2-2014) Additional requirements for current transformer
●IEC 60044-2: 2003(GB1207-2006) Inductive voltage transformers
●IEC61869-3: 2011(GB20840.3-2013) Additional requirements for inductive voltage transformers
●Q/GDW 425-2010 The technical specification for electronic voltage transformers
●Q/GDW 424-2010 The technical specification for electronic current transformers
●Q/GDW 426-2010 The technical specification for merging unit in Smart Substation
●IEC61850-9-1: 2003(DL/T 860.91-2006) Specific Communication Service Mapping(SCSM)-Sampled values over serial unidirectional multidrop point to point link
●IEC61850-9-2: 2004(DL/T 860.92-2006) Specific Communication Service Mapping(SCSM)-Sampled values over ISO/IEC8802-3; Implementation guideline for digital interface to instrument transformers using IEC61850-9-2
●JJG 313-1994 Verification regulation for measuring current transformer
●JJG 314-1994 Verification regulation for inductive voltage transformer
●JJG 1021-2007 Verification regulation for electric instrument transformer
●JJG 169-1993 Verification regulation for instrument transformer test set
●Q/GDW 441-2010 The technical specification for relay protection in smart substation
DCM-330 can complete every accuracy verification item, including ratio error verification, angle error verification, polarity verification, frequency measurement, composite error verification, harmonic test, message discreteness test and all channels data test. Both pulse time synchronization and IRIG-B time synchronization are available. Also the traditional instrument transformer’s ratio error and angle error can be verified. After the test, the data can be stored off-line, then tested and analyzed off-line. On site the off-line test and analysis can be executed after the data are saved.
DCM-330 can read SCD module file, analyze each channel’s data attribute of the present MU automatically. It is easy for users to choose the data of the tested instrument transformer.
Multi-interfaces and complete protocols
DCM-330 can verify electronic instrument transformer from home and abroad, including instrument transformer’s low level analog signal, IEC61850-9-1, IEC61850-9-2, IEC61850-9-2LE, IEC60044-8 FT3 and SGCC FT3LE. It also can verify traditional instrument transformer. IEC61850-9-1, 9-2, 9-2 LE are input from one same fiber channel(data frame format self-adaptive). IEC60044-8 FT3 and SGCC FT3LE are input from one same fiber channel(data frame format self-adaptive).
The high-precision signal acquisition card is used for standard channel of tester, which has impeccable anti-interference measures and high-precision algorithm. The system accuracy is 0.01%, and two-channel analog signal synchronization error when sampling is within 0.5μS.
Portable all-in-one tester
The external standard channel’s current/voltage signal from standard instrument transformer can access the tester directly. The tested channel’s analog/digital signal from the tested instrument transformer or MU can be input into the tester directly. Wiring is simple and reliable. The tester comes with its own IPC corresponding algorithm, test results are saved automatically or manually in Excel format. The tester is small and lightweight, and comes with USB and Ethernet network communication port, which is easy for users to save the test results to USB flash disk or computer.
The tester’s hardware system has massive applicability and universality. The software can be updated conveniently according to the standard’s new development and user’s demand.
1) Analog values
Measurement limiting value: ±5V (peak value)
Sampling accuracy: 0.03%
Multichannel synchronization error: <0.5μs
Maximum lossless input voltage: ±10V
Input impedance: 1MΩ
2) Digital input voltage
IEC61850-9-1: rated voltage parameter 11585 (0x2D41)
IEC61850-9-2: digital value 1 is 10mV
IEC61850-9-2LE: digital value 1 is 10mV
3) Digital input current
IEC61850-9-1: rated protection current is 463(0x01CF), rated measuring current is 11585(0x2D41)
IEC61850-9-2: digital value 1 is 1mA
IEC61850-9-2LE: digital value 1 is 1mA
4) FT3 interface
Baud rate: 5M/10M(self-adaptive)
Interface type: ST interface, wavelength 850nm
Digital voltage: rated voltage parameter 11585(0x2D41)
Digital current: rated protection current is 463(0x01CF), rated measuring current is 11585(0x2D41)
5) Synchronization signal
Interface type: ST interface, wavelength 850nm
Output signal: PPS(pulse per second pulse), high level 40nS
IRIG STANDARD 200-98 B code time synchronization
6) Communication interface
USB2.0, 10/100M Ethernet port
Electronic Instrument Transformer Test Set DCM-330 is the best choice for testing electronic instrument transformer in smart substation.
Electronic Instrument Transformer Test Set DCM-330 is developed and manufactured under an ISO 9001 registered system.
Electronic Instrument Transformer Test Set DCM-330 adheres to the electromagnetic compatibility(EMC) Directive 2004/108/EC(CE conform), also adheres to the low voltage Directive 2006/95/EC(CE conform).
FAQ 1: why Electronic Instrument Transformer Test Set DCM-330 has no response after power on?
Reply: 1) check whether the working power supply is normal.
2) check whether the 10A fuse in power socket is burnt out.
FAQ 2: why the operator can not use USB flash disk to download test results from Electronic Instrument Transformer Test Set DCM-330?
Reply: the capacity of USB flash disk must be less than 8G.China Instrument Transformer Testing