Emergency Lighting Equipment
Standby Generators
Batteries
UPS
100
Most emergency lighting is the form of __________ __________
Unit Equipment
100
Provide a common area that would need a standby generator
Hospital, shopping mall, jail, airport
100
which PPE should be worn when adding water to a wet cell battery? (3 items)
Rubber gloves, rubber apron, safety goggles and or face sheild
100
Identify Common applications for UPSs
Open ended question
process control, computers/IT, gas monitoring equipment, security systems, emergency lighting.....
200
Common Battery voltages for Unit equipment are
1.
2.
3.
6V
12V
24V
200
What is the purpose of the transfer switch in this circuit:
Ensure the generator does not back feed the utility
200
Why does the average battery have a reduced output in the cold
The cold slows the chemical reaction
200
What 2 actions does a UPS offer an electrical system?
1. provides backup power in the event of a utility failure
2. enhances the quality of the utility power to the connected loads (limits surges and noise)
300
How are the DC lamps of Unit Equipment tested?
Toggle the "Test Switch"
300
Which component of a generator controls the engine speed under varying loads
Governor
300
Which acid is found in the electrolyte of a Lead-Acid Battery?
Sulphuric Acid
300
When an UPS is said to be in Off-Line Mode, the inverter is bypassed?
True
400
According to the CEC, what is the maximum voltage drop permitted at a remote lamp when fed from Unit Equipment. Provide the rule number as well
5%
46-306-1
400
An emergency generator in a Class A facility must have how many Hours of fuel on site
72 hours
400
For normal charging, a 12V battery would require a charging voltage an over voltage range of about 10% to ___%
20%
400
Identify the 3 essential components of any UPS systems
1. Batteries
2. Rectifier
3. Inverter
500
According to the CEC, what is the minimum height from the finished floor that Unit Equipment can be mounted? Also provide the rule number
2 meters
46-302
500
according to CEC, an Automatic Transfer Switch servicing low-voltage essential electrical systems must be _________ operated, and _________ held. Include the code rule
electrically
mechanically
24-304-2-a,b
500
Define the "Initial Charge" of a battery
the charging process conducted after the battery is initially filled with electrolyte solution
500
Which 2 types of batteries are the most common in a UPS system?
Lead-Acid
Nickel-Cadmium
600
Identify all 6 of the components commonly found in emergency lighting "Unit Equipment"
Rechargable Battery, battery trickle charger, battery voltage indicating light, test switch, transfer relay, one or more lamps
600
Referring to the schematic below, the system is designed so that EG1 starts and takes the priority #1 loads first?
No, when utility power is lost, the generators all start automatically, the first generator to reach rated output will be connected to the bus and transfer current through the ATS-1 to priority #1 loads. As each generator reaches output, they are added to the bus and ATS-2 passes current to the next most critical loads
600
What is the purpose of D1,D2,D3 and D4
Form a full wave bridge rectifier - converts AC to DC
600
What is the semi-conductor component used to provide surge protection in a UPS
Metal Oxide varistor
700
According to the CEC, if there is a requirement in a given area for emergency lighting, does an Exit Sign in this area need to be illuminated by an emergency power supply? Provide the rule number as well
Yes
46-400-3
700
According to the CEC, if a Generator is used as the emergency power supply, which 3 parameters must be met? Provide the Code Rule(s) as well
1. has sufficient capacity to handle the connected load(s)
2. will start and take the load automatically via a ATS
3. conforms with CSA C282
46-202-3-a,b,c
700
What is the purpose of SCR1?
Controls the conduction angle for current to the battery
700
With an "Off-Line" UPS, what happens when the AC Supply is lost?
Static Transfer Switch switches to the Battery circuit to maintain power to the critical loads
