ANNEXURE-I
DC SUBMERSIBLE PUMP SET
1.1 For D.C. Motor Pump Set with Brushes or Brush Less D.C.(B.L.D.C. ) :
(i) 100 liters of water per watt peak of PV array, from a Total Dynamic Head of 10
metres (Suction head, if applicable, minimum of 7 metres) and with the shut off
head being at least 12 metres.
(ii) 50 liters of water per watt peak of PV array, from a Total Dynamic Head of 20
metres (Suction head, if applicable, up to a maximum of 7 metres) and with the
shut off head being at least 25 metres.
(iii) 35 liters of water per watt peak of PV array, from a Total Dynamic Head of 30
metres and the shut off head being at least 45 metres.
(iv) 21 liters of water per watt peak of PV array, from a Total Dynamic Head of 50
metres and the shut off head being at least 70 metres.
(v) 14 liters of water per watt peak of PV array, from a Total Dynamic Head of 70
metres and the shut off head being at least 100 metres.
(vi) 9.5 liters of water per watt peak of PV array, from a Total Dynamic Head of 100
metres and the shut off head being at least 150 metres.
The actual duration of pumping of water on a particular day and the quantity of water
pumped could vary depending on the solar intensity, location, season, etc.
* Water output figures are on a clear sunny day with three times tracking of SPV panel, under the “Average Daily Solar Radiation” condition of 7.15 KWh/ sq.m. on the surface of PV array (i.e. coplanar with the PV Modules). For higher or lower head / PV capacity, or in between various models; water output could be decided as specified herein above and on prorata basis.
1.2 ELECTRONICS AND PROTECTIONS
Maximum Power Point Tracker (MPPT) shall be included to optimally use the solar panel and maximize water discharge. It shall be part of controller inclusive of VFD as norms of IEC guidelines. Max. MPPT efficiency should be 99%. Overall Efficiency of MPPT system should be 97%. Degree of MPPT protection shall be of IP 65. Operating temperature range of MPPT shall be in between - 25ºC to +60ºC. Communication of MPPT shall be based on RS 485 / WiFi. MPPT shall meet Compliance guidelines of EN 50178; IEC / EN 62109 - 1; IEC 61800
with latest amendments.
Controller for BLDC motor driven pumps, if required be used. The controller must have IP54 protection or must be housed in a cabinet having at least IP 54 protection.
A Variable Frequency Drive (VFD), a type of motor controller, shall be provided to enable driving of electric motor by varying the frequency and voltage supplied to provide maximum torque with minimum sunlight radiation. The VFD should take care of electronic characteristics of solar panels and motors so provided.
Electronics and accessories to be provided in consideration with the requirement remotemonitoring system so that required data or details can be transmitted suitably like electro-magnetic flow meters with sensors, electro-magnetic pressure gauge with sensors, water level sensors, auto on / off switch, floatswitch, auto-fault detections etc. The system shall support remote monitoring ofeach solar pumping installation through GPRS based SIM using GSM/CDMAnetworks.
Adequate protection should be incorporated against dry operation of motor pumpset, and against hails and storms. Full protection against open circuit, accidentalshort circuit and reverse polarity should be provided. A good reliable on/off switchsuitable for DC use is to be provided
1.3 MOTOR PUMP SET
The Solar operated water pumping system shall be designed with DC motor pump set as per site requirement of head and discharge of water to be pumped by the solar system as above with following basic requirements:-
The solar submersible motor pump sets shall be having BIS/ CE as well as MNRE certification in accordance with the required specifications.
The solar submersible motor pump set shall have either CE/ IS marking on itsbody.
The wire to water efficiency of the solar motor pump set should be > 50%
Manufacturer will also report the wire to water efficiency of the motor-pump setused by them & submit copy of the test report as proof to (MNRE) Solar EnergyCentre. The overall efficiency of motor pump set at duty point should be 45% (for DC pump set)
The pump shall be provided with specially designed water tight mechanical sealsensuring zero water leakages.
The pump shall be designed to produce required discharge at designed head asper site specific condition of the field.
Proper check valve, Pressure relief valve, float switch etc should be provided for
proper functioning of the system.
The following details should be marked indelibly on the motor pump set
a. Name of the Manufacturer or Distinctive Logo.
b. Model Number
c. Serial Number
d. Purchaser's mark "PHED Rajasthan"
The manufacturers of pumps shall ensure and certify that the pump and allexternal parts of motor used in submersible pump which are in contact with water,are of stainless steel. The pumps used for solar application should have a 5 yearswarranty so it is essential that the construction of the pump be made using partswhich have high durability and do not need replacement or corrode for at least 5years.
It is recommended to provide sand / silt -filters with the pumping system with 10microncartridge.
1.4 DC SOLAR SUBMERSIBLE PUMPSET
Submersible DC Pump models shall be of light weight S.S. grade 304 material
suitable for drinking water with inbuilt/ installed controller
The pump set shall be as per following requirements:
1. Type – Helical /Centrifugal rotor brush less permanent magnet.
2. Rated rpm – 500 to 3600
3. Rated Voltage – Range 30 to 300 V
4. Rated Current – 8.4 to 15 amp (As per Kw of pump set)
5. Built-in Features
a. Dry run protection
b. Over and under voltage protection
c. Overload Protection
d. Miniature Circuit Breaker
e. Temperature Protection
6. Enclosure class shall be in accordance with IP 68.
7. Junction Boxes, DC Distribution boxes as per IP 61 specifications.
8. Installation and safety requirements should be as per IEC 62548 or
equivalent BIS standard.
9. Pumps including motor shall have CE conformity certification.
1.5. REAL TIME ONLINE MANAGEMENT AND MONITORING SYSTEM (RTOMMS)
Provision for remote monitoring of the installed pumps must be made in the controllers or the inverters either through an integral arrangement or through an externally fitted arrangement. It should be possible to ascertain the daily water output, the power generated by the PV array, the up time of the pump during the year, numbers of days the pump was unused or under breakdown/ repairs.
RTOMMS shall have following main features:
1. RTOMMS shall have provision to fetch the data of hourly water production,power generated by Solar Array, working hours of SPV pumping system, from allthe remote locations to the centralized server of Contractor and Departmentthrough appropriate network like GSM/GPRS, and further to web portal to behosted by Contractor/ department.
2. RTOMMS shall also provide data of any fault detected in pumping system alongwith breakdown/ repair time through control panel to Centralized servers.
3. The data of pump being turned on/ off by controller due to empty/ full waterlevels in storage tank as determined through suitable arrangement of sensor/floating device should be fetch-able by RTOMMS.
4. For the measurement of water production electromagnetic flow meters shall beinstalled and connected with RTOMMS.
5. Contractor shall develop own web based software on which all data receivedfrom RTOMMS shall be available and updated on hourly basis, in definedformats. The web based software shall have provision to generate daily/monthly/ periodic reports in defined formats (to be finalized by department at thetime of award/ during execution of work). However department may develop owncentralized server and web-portal to monitor the hourly data and generate
reports.
6. Web based software shall have provision of separate login ID/ Password fordifferent level of PHED officers, with defined rights like Data view, Generatereports, Verification etc.
7. RTOMMS shall be capable to handle all solar systems installed at remotelocations in Rajasthan including any additional quantity executed in future.