CPRI
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Section II – Technical Specifications
Tender enquiry no. : STR/STDS-02/15-16
Name of the equipment: Surge Generator as per IEC 61008 and 61009 with latest amendment
Scope: Supply, Installation, Commissioning of the surge generator. The set-up shall include all the accessories required for establishing the test facility at
CPRI, Bhopal.
Note: The Offers should be submitted only in this format otherwise the offer will be liable for rejection .A detailed technical catalogue
/literature/pamphlet and any other technical details shall be sent in hard copy in a sealed cover super scribing enquiry number and due date so as to
reach the following address within the due date and time. This is very much essential to evaluate your offer. The item to be delivered at Switchgear
Testing and Development Station,Bhopal
Name of the Bidder :
Offer Number and Date :
SI.No Parameters
CPRI Specification/Requirements
To be Completed by the Bidder
Guaranteed Technical
Deviation/Remarks specify
Particulars (GTP)
if any
1
Calibration certificate of generator from laboratory accredited as per
ISO/IEC compliant laboratory is required.
2
Guarantee : The performance guarantee of the test system and also the
instruments should be one year from the date of commissioning.
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3
OBJECTIVE : The test facility is required to conduct test of verification of
behaviour of RCCB's in case of current surges caused by impulse voltages in
accordance with the standard IS : 12640(Part-1)2008 and IEC 61008-1,1996 and
IEC : 61008-1,2010 with amendment 2 as on 09-2013 on the residual current circuit
breakers and IEC : 61009-1.The equipment shall comply with all the latest
editions/amendments of the national/international standards.
The test procedure and also the test parameters such as voltage, current shall be in
accordance with the relevant clause of standard specified.
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SERVICE CONDITIONS :
MSL : 523mm
Ambient temperature : upto 40°C
Humidity : 75-95%
Type of installation : Indoor
5
GENERAL FEATURES
-Power mains supply : 230V±10%,50Hz
-Power consumption : 80W
-Interfaces
: Serial RS232 and parallel IEEE
-Safety features such as interlocks and warning lamp must be made
available.
-Software enabled to set the operating sequence as required by the
user and as given in the standard.
-Easy to operate front panel menu.
-The system shall be compliant with windows XP, Windows Vista,
Windows 7 and Windows 8.1
-The generator shall be supplied with the coupling/decoupling network
to perform surge test
-Weight : approximately 30kgs
The surge generator shall be capable of delivering a damped
oscillatory current wave and damped surge current wave with the
following requirements.
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I) Technical Details for Surge Current Wave of 8/20µsec
Voltage(open circuit) :250V-7000V±10%
Current(short circuit) : Maximum upto 3500A±10%
Pulse front time : 8µsec± 20%
Pulse time to half value : 20µsec± 20%
Polarity Positive,negative,alternating
Trigger Circuit
Release of pulses : Automatic,manual,external
Synchronisation : 0°-360 °, resolution 1°
Output
Direct : Via HV connectors for external coupling networks(Zi= 2ohm optional
adapter)
Coupling modes : Line-Line with 2ohm
Line-ground with 12ohm
CRO trigger : 5V signal for oscilloscope.
Measurements
CRO in Voltage scale : 10Vp at 7000V
CRO in current scale : 10Vp at 3500A
Peak voltage
: 7000V in the LCD display
Peak current
: 3500A in the LCD display
The surge wave generated shall have compliance with the IEC 61008 -1,2010 and
61008-1 amend 2 IEC 2013. Details as given below :
Surge current wave(8/20µsecs)
Peak value
: 3000A+10%
Virtual front time
: 8µsec± 20%
Virtual time to half value : 20µsec± 20%
Peak of reverse current less than 30% of peak value.
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II) Technical Details for Ring Wave of 0.5µsec/100kHz
Test Voltage :250V-6000V±10%
Voltage
waveshape(open circuit)
Rise time(first peak) : 0.5µsec±30%
Oscillation frequency : 100kHz±10%
Decaying : Peak 2 to Peak 1=40-110%,Peak3 to Peak 2=40-80%, Peak4 to
Peak3=40-80%
Current
waveshape(short circuit)
Rise time
<=1.0µsec
Oscillation frequency 100kHz±10%
Source impedance 12ohm and 300ohm
Peak current As per selected source impedance
Polarity Positive, negative
Trigger Circuit
Release of pulses : Automatic,manual,external
Synchronisation : 0 °-360°, resolution 1°
Repetition rate : max 1Hz(1s-999s)
Output
Direct : Via HV safety lab connectors
Coupling modes : L, N, PE , line to line and line(s) to ground
CRO trigger : 5V signal for oscilloscope.
Test routines
Quick start On-line adjustable parameters easy-to-use
The ring wave generated shall have compliance with the IEC 61008 -1,2010 and
61008-1 amend 2 IEC 2013. Details as given below :
Oscillatory wave (0.5 µsec/100kHz)
Peak value
: 200A+10%
Virtual front time
: 0.5µsec± 30%
Period of oscillatory wave : 10µsec± 2%
Each successive peak about 60% of the preceding peak.
The surge generator must have the facility to invert the polarity after every two
applications.
The surge generator shall include
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1.a) Surge Max 7kV
b) Ring wave(0.5 µsec/100kHz)
c) Surge current impulse (8/20µsecs)
d) USB and GPIB ports
2) Test report generation software.
3) Remote control software.
9 Coupling network 3-phase compatible with the surge generator shall be quoted
seperately.
10 ROUTINE/TYPE TEST/INSPECTION : The equipments/instruments of the test set-up
should be inspected at site by CPRI representative before satisfactory delivery to
CPRI. Further the test-system also to be checked on actual test at CPRI Lab to
prove its performance in testing as per the standards and specifications concerned
to the test object intended. Any instrument with specified accuracy limits in the
system should have its calibration traceability with National/International accrediated
laboratory.
11 Delivery period : The material is to be dispatched within 1 month from the date of
purchase order.
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12 Other terms & conditions : All other terms and conditions shall comply with CPRI's
purchase procedure. The circuit diagram, operation manuals, maintenance
instructions of the test system/equipment/instrument shall be submitted in duplicate
to CPRI alongwith the set-up.
The standard circuit for generation of wave alongwith the waveshape is provided here
for reference
13
PN: 1. A detailed technical catalogue/phamlet and other details shall be sent in hard copy in a sealed cover super scribing tender enquiry number and
due date so as to reach the following address within the time. This is very much essential to evaluate your offer.
2. Letter of authorization issued by the principal shall be sent by the Indian agents who have offered on behalf of their principals.
Address : Joint Director
Central Power Research Institute
Sir C V Raman Road, P O no 8066, Bangalore 560080
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