PM100 / 300 U
SER
M
ANUAL
T
HE
MENU S
YSTEM
VPN 98-052 P
AGE
11
M[0] Outputs
This menu is only available when a Voltech interface card is fitted. See page 23
for a full description of the cards available for your analyzer. For operating
instructions, see the manual supplied with the interface card.
M[1] Inputs
The PM100 / 300 analyzers are highly versatile and can be configured to
analyze almost any electrical system. The versatility is achieved because all
power inputs are ac + dc coupled, and are isolated from each other and from the
ground.
The four main wiring modes are:-
[1ø2W] SINGLE PHASE, TWO WIRE.
Select for single phase loads, two wire distribution system and rectifier output.
[1ø3W] SINGLE PHASE, THREE WIRE.
Select for three wire single phase distribution systems.
[3ø3W] THREE PHASE, THREE WIRE.
Select for three phase loads without neutral connection (two wattmeter method).
Note that the [N] channel provides computed values of current (Arms, Afund,
Acf, Apk, Aharm and Athd) for the third (unmeasured) phase of the system.
[3ø4W] THREE PHASE, FOUR WIRE.
Select for three phase loads with or without neutral connection (three wattmeter
method).
External Shunt
For use with external shunts and other devices that produce a voltage
proportional to the current being measured (E.g. some DC coupled current
transformers.) The proportional voltage is applied between the ‘EXT’ and ‘LO’
terminals.
Example:
The scale factor is entered directly in mV/A. A twisted pair connection is
recommended to minimize noise pick-up.
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