CSIR-CEERI has established an NABL Accredited Testing Facility at its Jaipur Centre. The facility has been established with aim to provide support indigenous manufacturers, MSMEs, to test their developed products against nationally and internationally accepted standards thereby promoting development of quality products. In the initial phase of estab-lishment, a facility for testing solar grid tied inverters has been setup.
The test facility has following major equipment for testing activity:

S.No. Major Equipment Key Specifications & Features

1.

Regenerative Grid Simulator
Ametek California Instruments: MX-30-3PI
  • Power Capacity: 30kVA, 3Phase
  • Voltage Range: 0-300 V per phase
  • Current Range: 0-40 A per phase
  • Programming Accuracy Voltage (rms): ± 0.3 Vrms
  • Frequency: ± 0.01 % of programmed value
  • Phase:< 0.5° + 0.2°/ 100 Hz with balanced load
  • Single and Three Phase Mode
  • User defined voltage waveform and distortion programming
  • Regenerative, bidirectional “Green” Power So-lution
  • Automatic crossover between Source and Sink power mode offers regenerative capabilities in AC mode.
  • Standard RS232C & USB along test applications

2.

Solar Array Simulators
Ametek Terras ETS1000Y15D-PVF
  • Voltage Range: 0-1000 V per phase
  • Current Range: 0 – 15 A per phase
  • Voltage programming and readback: ±0.2% of full scale voltage
  • Current programming and readback: ±0.5% of full scale current
  • High resolution I-V curve simulates static and dynamic conditions
  • Designed for high speed Maximum Power Point Tracking (MPPT)
3. High Accuracy Power Analyzer
Fluke Norma 5000Hz
  • Basic Accuracy:0.1%
  • Sampling Rate: 300kHz
  • Voltage Range: 0 to 1000 V
  • Bandwidth: 0-3 MHz
  • Frequency Range: DC, 0.2Hz to 300kHz
  • Measurement of voltage, current, and power harmonics up to the 40th harmonic
  • Non-gapping calculation of averaged values for each phase. In three phase system addi-tionally, calculation of total power and averag-ing of V and I of the three phases.
4. Mixed Storage Oscilloscope
Keysight: MSOX3054T
  • Bandwidth: 500 MHz
  • Number of Channels: 4 Analog plus 16 digi-tal channels
  • Display Size: 8.5-inch
  • Waveform Update Rate: 1,000,000 wfms/s

Along with these equipment various high accuracy voltage and current probes, data acquisi-tion system, Multimeter are used in testing activities.

The present scope of testing is for the following standards:

S.No. Standard Number Standard Applicable Testing Scope
1. IS/IEC 61683:1999 Photovoltaic System-Power Conditioners – Procedure for Measuring Efficiency Partial and Full Load Efficiency of Grid Tied Inverters
2. IEC 62116:2014, IS 16169:2019 Utility-Interconnected Photovoltaic Inverters – Test Procedure Of Islanding Prevention Measures Anti-Islanding Testing of Grid Tied Inverters
3. IEC 61727:2004 Photovoltaic (PV) Systems – Characteristics of the Utility Interface
  • DC Injection
  • Harmonics and Total Harmonic Distortion Power factor
  • Over/under voltage,
  • Over/Under frequency, Recon-nection Time after Utility Recovery
4. EN 50530: 2010 Overall efficiency of grid connected photovoltaic inverters
  • Static MPPT efficiency
  • Dynamic MPPT efficiency
  • Static Power Conversion Efficiency
  • Overall Efficiency