Functional Description - Keysight SL1200A Series Operating Instructions Manual

1 System Description

Functional Description

3 TN/TT grid: The generated phases have a potential reference to grounding (PE).
IT grid: The generated phases are electrically isolated from grounding (PE).
16/51
Use of spare and accessory parts other than the original,
Operation of the system with incomplete safety devices,
Operation of the system in explosive areas.
The SL1200A serves as a regenerative, bi-directional, 3-phase AC
source/sink, with optional DC source/sink. The system can be parameterized
in voltage- or current-controlled mode (Voltage Priority or Current Priority).
The system was given a compact design with integrated measuring and is
available as Low-Voltage (600 V, model SL1201A – SL1203A) or High Voltage
(1200 V, model SL1212A – 1213A) variant, depending on the respective
application.
The SL1200A consists of three (45 kVA) or six (90 kVA) power stages (RPS –
regenerative power system), there are two different types of power stages,
low voltage (600 V AC, optional 500 V DC) or high voltage (1200 V AC,
optional 1000 V DC). The power stages can be parametrized and used
individually or together with each other. Thus, various configurations are
possible.
In AC mode, the SL1200A is operated with a sinusoidal AC voltage output and
an adjustable basic frequency of 40 to 75 Hz. This enables the operator to
supply 1-, 2- or 3-phase consumers, and test them in operation by means of
targeted error emulation (Voltage Priority). If the SL1200A is configured in
Current Priority mode, the power stage synchronizes with the voltage
measured at the terminals and regulates the specified (positive or negative)
current.
The following table shows examples for AC grid emulations.
Description Grid /
Grid Form
Example AC mode
PE reference
Neutral Pass Through
Contactor: closed
TN/TT grid
Without PE reference
Neutral Pass Through
Contactor: opened
IT grid
Table 2: Examples for emulated AC grids
Equipped with an optional DC mode, the SL1200A can be operated as a
Voltage Priority with different output voltages. If, for example, a charging
Scienlab Regenerative AC Emulator – SL1200A Series – Operating Instructions
Connection SL12xxA to DUT
3
2