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How many 50 VDC Rated panels are needed in series to achieve 1500VDC?
You would need 30 panels in series to achieve approximately 1500 VDC.
What are the components of the PPE for an Category 2?
Shirts Hard Hat
Pants Safety Glasses
Boots Hearing protection
Class 0 gloves Face protection
Describe the process for performing a Absence of energy test on a DC String
Prepare for the task
Select the correct test instrument
Inspect the test equipment
Perform the “live-dead-live” test
Test the DC string conductors
Re-test the meter on a known live source
How would you check a simple fuse to be operational?
Continuity check/OHM, voltage across fuse.
What is the definition of ohms law
Ohm’s Law defines the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit.
As a conductor increases in length..
As a conductor increases in length, its resistance increases.
What are the CIP requirements for connecting your laptop or tablet to the site
electronic component
TCA Approved
Amp Clamp, what is it used for
An amp clamp (also called a clamp meter or clamp ammeter) is a test instrument used to measure electrical current without disconnecting the conductor.
How to Find SOP
Origis Team interconnect
Irrandiance, what is it, what are the units it is measured in
is the amount of solar power per unit area hitting a surface at a given moment.
Watts per square meter (W/m²)
How do PV Panels collect sunlight
PV panels collect sunlight using the photovoltaic effect, where light energy is directly converted into electrical energy inside a semiconductor material (usually silicon).
1. Sunlight hits the solar cell
2. Electron–hole pairs are created
3. Internal electric field separates charges
4. Current flows through the circuit
5. Power is produced
What is a diode in PV and why do we have them
A diode in a PV system is a semiconductor device that allows current to flow in only one direction. In solar applications, diodes are mainly used to control current flow and protect panels from damage.
There are two main types used in PV systems:
1. Bypass diodes (inside PV modules)
2. Blocking diodes (used in some system designs)
PV Array components
1. PV Modules
2. Strings
3. Combiner Box/LBD (load break Disconnect)
4. DC Wiring
5. Disconnects / Isolators
Tracking System
Monitoring & Control System (SCADA)
Simple system flow
PV Modules,Strings,Combiner,Inverter,AC Output,GRID
What is A CT, what does it do?
A CT (Current Transformer) is an electrical device used to measure high AC current safely by producing a smaller, proportional current that instruments can read.
What is a PT, what does it do?
A PT (Potential Transformer)—also called a VT (Voltage Transformer)—is an instrument transformer used to step down high AC voltage to a lower, safe, measurable voltage for meters, relays, and control systems.
Terminology: LBD
LOAD BREAK DISCONECT
Terminology:GSU
GSU (Generator Step-Up Transformer)
Terminology: MVT
Medium Voltage Transformer
Terminology: GHI
Global Horizontal Irradiance.
Terminology: POA
Plane of Array irradiance.
Terminology: RPOA
Remote Point of Operation Access