15
Magtrol Model 6530 Three-Phase Power Analyzer
Chapter 3 – Installation/Configuration
SETUP
The custom menu can include up to 6 fields with selections dependent on the measurement mode.
CURRENT
VOLTAGE
POWER/PF
Figure 3–6 Custom Main Menu
3.2
PROTECTING YOUR 6530
Before the 6530 is used for power measurement, guidelines regarding transient overloads, current
overload, surge protection and circuit breakers must be followed.
3.2.1
T
RANSIENT
O
VERLOADS
Connect an appropriate transient suppressor in parallel with all inductive loads. Consult the suppressor
vendor's application literature for proper selection and sizing.
C
AUTION
:
D
AMAGE
TO
THE
6530
CAN
RESULT
FROM
EXCESSIVE
VOLTAGE
TRANSIENTS
GENERATED
BY
UNSUPPRESSED
INDUCTIVE
LOADS
. T
HIS
DAMAGE
IS
NOT
WITHIN
THE
SCOPE
OF
THE
NORMAL
INSTRUMENT
SERVICE
AND
IS
NOT
COVERED
BY
THE
M
AGTROL
W
ARRANTY
.
3.2.2
C
URRENT
O
VERLOAD
There are no fuses in the 6530 measuring circuits. Therefore, excessive current passed through the
amps terminals will cause excessive internal heating and possible unit damage.
C
AUTION
:
T
HIS
OVERLOAD
ABUSE
IS
NOT
COVERED
BY
THE
M
AGTROL
W
ARRANTY
.
Know your load conditions and double check all connections. If an overload should occur,
immediately remove all power and locate and correct the problem before re-energizing your circuit.
If a circuit breaker is installed, it must be installed on the load side of the 6530 (downstream). This
will keep the low impedance of the input line connected to the 6530 for surge suppression. If the
line side must also contain a breaker, it should be delayed in operation to open after the load side
breaker has opened.
3.2.3
S
URGE
P
ROTECTION
Use Metal Oxide Varistors (MOV) or other equivalent transient suppressors connected between
lines at the load (across the load). These suppressors are an absolute necessity when inductive loads
are used. In three-phase systems, each load must have a suppressor.