Section 2
OM6624CT-3000-5-00
11 May, 2016
2-5
3000 A FS' the output current on the 3 A reference burden will be a maximum of
3 A when a 3000 A current is selected.
Note:
Always turn the Current Sources on LAST after the 6623A-3S Control Unit
and the 66259 Extender Control Unit are turned on. And, always turn the Current
Source off FIRST before turning off the 6623A-3S or the 66259. Never turn the
Current Source off or on while a measurement is in progress.
2.2.
INCOMING INSPECTION
If a 66259 Extender Control Unit is being used, a specific current program profile must be entered
into the 66259 Extender Control Unit before measurements can be set up and initiated. Where the
66259 Extender Control Unit and the 6624CT-3000 High Current DC Transformer are shipped at
the same time from the factory, a proper profile for three CS1000 Current Source Units is already
entered and a Summary of Coefficients is supplied with the system. Otherwise a profile will need to
be configured as specified in the 66259 Operation Manual.
If no faults are displayed during power up then proceed to measure a selected test current. A 1 ohm
or less Reference Shunt, such as a Guildline 9230A-10-1 must be installed on the 6623A-3S front
panel terminals marked '3 A BURDEN' and a shorting link on the 6623A-3S terminals marked '150
mA BURDEN'. Note that for proper setup and operation of the 66259 refer to the 66259 Operation
Manual. Refer to Figure 2-4 for interconnection details. Using the measurement set up procedure
below:
Step 1)
Check the connection of components of the system in the following order:
-
The 6624CT-3000 Transformer Unit is connected to the 6623A-3S with the
12 conductor cable.
-
The 6624CT-3000 is set to the '1000:1, 3000 A' range.
-
If it is to be utilized, the 66259 Extender Control Unit is connected to the
6623A-3S 'CONTROL' connector and a termination plug is installed at the
'BRIDGE' connector.
-
If it is to be utilized, the CS1000 Current Source(s) input is connected to the
6623A-3S 'CS1000' connector. Where the CS1000 is not used, a separate
current source is required.
-
A 1 ohm shunt is connected to the 6623A-3S front panel terminals marked
'3 A BURDEN'.
-
A high accuracy Digital Volt Meter is connected to the potential terminals of
the 1 ohm reference shunt, set for a measurement on the 1 Volt range and
any thermal EMF offset removed.
-
A shorting link is installed at the 6623A-3S terminals marked '150 mA
BURDEN'.
Summary of Contents for 6624CT-3000
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