6
If the MNPR™ is operating in a mode other than Sensitive (standard), then the
Programmer will display the variables unique to the present operating mode:
4. Time Delay Mode
- In addition to RV, RA and ST, Relay Actual will allow the
user to set the Time Delay, Instant Current and Extended Delay.
5. Insensitive Mode
- In addition to RV, RA and ST, the user will be able to
program the Insensitive Trip Current and Extended Delay.
6. Watt-Var Mode
- In addition to RV, RA and ST, the user may program the
Watt-Var Current as well as the Watt-Var Angle.
IV. Determining the Network’s system Condition
In addition to programming the MNPR™, the Programmer can be used to gain
valuable information about the status of the network. These functions are located on
the third row from the top.
A. Network Volts
(Va:, Vb:, Vc:) - Press
A, 3
. This will tell the user the voltage
present on the network side of the network protector.
Note: On 480-volt network protectors, the MNPR™ maybe on the 120-volt
side of the potential transformers. In this case, the display should be
multiplied by 2.2 to calculate the actual network voltage.
B. Network Amps
(Ia:, Ib:, Ic:) - Press
B, 3
. This will tell the user the current flowing
through the network protector.
C. Reclose Volts
(Da:, Db:, Dc:) - Press
C, 3
. This will tell the user the present
differential voltage between the transformer and network sides of the network
protector.
D. Relay Temp
(Tf:, Tc:) - Press
D, 3
. This will tell the user the temperature inside
the casing. In addition, pressing
NEXT
will change the display units from Celsius
to Fahrenheit.
Note: This temperature will generally be higher than the ambient
temperature because the MNPR™ does generate some internal heat.
V. Direct Orders to the MNPR™
The programmer is capable of ordering the MNPR™ to Open and of ordering the
MNPR™ to Block the network protector from closing. From the
“ETI _ _”
Scroll:
A. Block Relay
- Press
B, 4
. This will prevent the MNPR™ from closing the
protector. If the protector is already closed, this feature will not cause it to open.
