Minimize circulating current so that is does not cause a relay action.
True
True/False
The step regulator has a bandwidth range of ±3/4 - 2 volts
True
When the voltage is being raised, the regulator is said to be
Boosting
When the voltage is being lowered, the regulator is said to
be
Bucking
An is a transformer that has only one winding
autotransformer
True/False
The line-drop compensator calculates the necessary change in the voltage by simulating the voltage drop in the feeder between the regulator and the load center.
True
True/False
The basic bandwidth used by the DWP is 2 volts
True
True/False
Feeder voltage regulators are connected open-delta
True
True/False
Step type regulators use a mechanism with 9 contacts. These 9
contacts include 8 steps and a neutral
True
A changes the polarity of the connection between the primary and the secondary
reversing switch
On Induction Regulators, the movable coils are called....
rotors
True/False
The stationary coil is the stator. The stator is also called the
secondary or output winding. The stator is connected in series with
the circuit to be regulated.
True
With Induction Regulators, when the rotor is perpendicular to the stator, it cannot induce any in the stator
voltage
How many steps on a regulator?
33; 16 up, 16 down, and neutral
Regulators may hunt due to faulty .
Contact making voltmeter
Time delay
Bandwidth setting
True/False
Feeder voltage regulators use a line-drop compensator to simulate the voltage drop to the load center
True
True/False
Voltage regulators need to be blocked on neutral when switching is done on a feeder position
True
The two types of feeder voltage regulators used by the Department are and
Induction and Step
True/False
Induction regulators use a rotor and stator to adjust the voltage
True
True/False
The regulator should show between 1000 and 3000
counter operations for a normal month.
True
True/False
On the basis of the information from the line-drop compensator, the contact-making voltmeter (CMV or CMVM) will raise or lower the voltage, provided that time and bandwidth requirements are met
True
Electric stoves, irons, heaters, and toasters are examples of or resistance loads.
heating
Vacuum cleaners, washing machines, fans refrigerators, and power tools are examples of .
motor loads
What are some examples of electronic loads.
Television, computers, and radios
Another name for lighting load is
illumination load
What are the two major benefits to the Power System in maintaining a regulated voltage supply to our customers.
Customer satisfaction, efficiency
True/False
The load center is the point on a feeder where the circuit branches out into various primary circuits.
True
is the decrease in voltage on an electric circuit between the source and the load.
Voltage drop
When an autotransformer is used to the voltage, part of the single winding acts as the primary, and the entire winding acts as the secondary.
step up
When an autotransformer is used to the voltage, the entire winding acts as the primary, part of the winding acts as the secondary.
step down
What are the two types of line-drop compensators?
Balance Beam, Electronic
The basic bandwidth set by DWP is
2 volts
True/False
A hot regulator room will decrease the current carrying capacity of the regulator.
True
True/False
Step type regulator are autotransformers.
True
In reference to Voltage Regulators, each step causes a change of .
60 volts (1.25% of 4.8kv)
In reference to Voltage Regulators; two finger contacts and preventative autotransformers create a bridging position when each of the fingers is on different contact, resulting in 32 steps - 16 Boost, 16 Buck. Each step has a voltage change of
30 volts (.625% of 4.8kv)
True/False
When a rotor is to the sator, it cannot induce any voltage in the stator
perpendicular
The maximum voltage change occurs when the rotor is to the sator.
parallel
What are the two main reasons Voltage Regulators may need to blocked on neutral.
When making/breaking feeder parallel, voltage may not match possibly causing an arc.
When making parallel with the TBT, if not blocked on neutral, circulating current can occur possibly causing the Feeder CB, or TBT to relay
Most regulators are meaning the power supply is also the power supply for the regulator voltmeter
self-contained
True/False
In order to safely switch a feeder, the regulators must be on neutral
True
True/False
If a regulator is off neutral and it is impossible to move it to the neutral position, de-energize the feeder before switching out the regulator
True
True/False
Short circuit current is weakest in a regulator that is one step off neutral
False
True/False
Cutting a regulator flat allows the feeder to be supplied through the feeder position un-regulated
True
Primary OK TO - put slash as soon as reissued
Each Slash is for each primary OK TO on the same equipment
Authorized person can work on equipment up to alone
300V
OK TO Work Hot on 34.5kV line
LD generates tag number
Used to limit fault current to regulator
Reactors
69kV and above lines/cables – ground switches must be
closed before is issued
clearance
True/False
Voltage is regulated on a feeder according to the load center
True
only has reversing switch, no rotor or
stator
Step Type Regulator
True/Fasle
Induction regulators have 2 coils
True
True/Fasle
Step type regulators have 1 coil – auto transformer
True
Limit switch on regulator controls
% regulation
used to sense load center
voltage; line drop compensator
CMV – contact making voltmeter
True/Fasle
At 7.5kV and below – equipment can be worked on without
grounding if difficult or dangerous
True
Test for voltage before
grounding
230kV Bus is grounded after a is issued
clearance
True/False
Clearance must be transferred to a second authorized person,
then grounds transferred, then clear off the first authorized
person
True
ETB does not handle hazardous waste, who handles it
LD and/or ACO
may cause total current to increase and
relays to trip
