Deck 3: Photovoltaic System Examples

Question 1

List inverter system designs.

Answer 1

These include Micro-Inverter, String Inverter, and Central Inverter designs.

Question 2

What is a monopole subarray?

Answer 2

A monopole subarray is a PV array having an output circuit with two conductors, one negative and one positive.

Question 3

Define the term qualified person.

Answer 3

Qualified person is defined in Article 100 as someone that has skills and knowledge in electrical systems installation and has received safety training.

Question 4

The output of the ac module shall be considered an inverter ____.

A) output cycle
B) source cycle
C) output circuit
D) source circuit

Question 5

A central inverter system is defined simply as a PV system with a(n) ____.

A) tangential inverter system
B) longitudinal inverter system
C) axial inverter system
D) single inverter system

Question 6

With an AC module system, we do not calculate the system components as we would do with a standard system.

Question 7

AC module systems shall be permitted to have a single detection device to detect AC ____ and disconnect the AC power from the module.

A) false cycles
B) high temperatures
C) ground faults
D) high pressures

Question 8

An array is an assembly of panels or ____ mechanically integrated with a support structure and other components as required (foundation, tracker, etc.) that will form a direct current power producing unit.

A) modules
B) inverters
C) generators
D) oscillators

Question 9

AFCP devices must detect and interrupt the DC arc faults and then disconnect or disable the inverters or ____ and all the system components in the faulted circuit.

A) polarity controllers
B) charge protectors
C) circuit protectors
D) charge controllers

Question 10

In an electrical system, fuses are used to protect the wiring and equipment from excessive pressure.

Question 11

In a string system, if one of the string inverters is out for service, the other inverter(s) will stay on line producing an output.

Question 12

It is required that each inverter or interconnecting system must have a(n) ____ or circuit breaker.

A) bussman fuse
B) ignition fuse
C) plug fuse
D) dedicated fuse

Question 13

Every solar panel is a(n) ____.

A) electrical inverter
B) electrical generator
C) electrical cell
D) electrical micro-inverter

Question 14

How does NEC article 690.2 define an alternating current (AC) module?

Question 15

In a string inverter system, the inverter should be as close to the array as possible to reduce ____.

A) DC cycles due to temperature
B) DC losses due to voltage drop
C) DC fluctuations due to temperature
D) DC imbalances due to voltage drop

Question 16

All PV systems are potentially dangerous from an installation and maintenance point of view.

Question 17

What does the acronym AFCP stand for?

Question 18

In a string array system, there are a number of ____ in the or on the building of the installation.

A) grid-based tools
B) circle inverters
C) grid-tied inverters
D) square inverters

Question 19

Any discernible electrical portion of an array can be considered a subpole.

Question 20

There is a potential danger of combining the circuits of two ____ where the sum of the voltages, without consideration of the polarity, will exceed the rating of the conductor insulation.

A) monopole subarrays
B) counterarrays
C) multipole subarrays
D) multiarrays