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9–58 EPM 5300 SERIES ADVANCED POWER METERS – INSTRUCTION MANUAL
GROUP 0, FUNCTION 3 — SYSTEM CONFIGURATION CHAPTER 9: PROGRAMMING GROUP 0 - GLOBAL METER SETUP
9.3.1 Open Delta System Installation Programming
A special switch is used to indicate that the electrical system being monitored is a Three-
phase WYE or Three-Wire Open Delta System using the connection installation (see
Chapter 3). The switch is located in GROUP 0, FUNCTION 3, Pack 1, Switch D.
This switch should be set to UP only if the electrical system is a Three-Wire Delta or
Open Delta, using 2 PTs. Otherwise, the switch should be set to DOWN. Failure to select
this switch results in Phase-to-Neutral readings, as well as incorrect power readings,
with the 2PT connection.
Special Open Delta Connection Installation should be followed in the Installation and
Operation section (Chapter 3).
1
a Non-significant will blank leading zero
UP: Enable
DOWN: Disable
b
Reset Protection
(see Part I: Installation and Operation)
UP: Enable
DOWN: Disable
c Phase Reversal Rotation Selection
UP: CBA Rotation
DOWN: ABC Rotation
d
Open Delta Installation
(see Part I: Installation and Operation)
UP: Enable
DOWN: Disable
2
a Limit/Relay Control
UP: Average
DOWN: Instantaneous
b
Power Factor Polarity Indicates +
(voltage referenced) or
- (current referenced)
UP: -PF
DOWN: +PF
c, d
For EI-BUS protocol: Switch C is DOWN, Switch D is DOWN.
For MODBUS protocol, ASCII framing: Switch C is UP, Switch D is UP.
For MODBUS protocol, RTU framing: Switch C is DOWN Switch D is UP.
For DNP 3.0 protocol: Switch C is UP, Switch D is DOWN.
3
a
Trip Relay Computer Control 1
(Relay Control 1 and 2 apply only if Relay
Option -NL was ordered.)
UP: Enable
DOWN: Disable
b
Trip Relay Computer Control 2
(Relay Control 1 and 2 apply only if Relay
Option -NL was ordered.)
UP: Enable
DOWN: Disable
c
RS-232 or RS-485 Communications or
Print
UP: Enable
Communications
DOWN: Enable DC
Output
d
DC Output
(To operate DC Output, disable PACK 3,
Switch C)
or
Print Operating and Programming Data
(To print, set PACK 3 Switches C and D to
UP position.)
UP: Enable DC Output or
Print Communication
DOWN: Disable DC
Output and Print