Sequoia / Tahoe Series User Manual California Instruments
8 M447352-01 REV-A
This mode is applicable only for SEQUOIA series. TAHOE series does not support this mode.
Energy flow is from UUT to facility AC input through SEQUOIA as shown in Figure 2-2. In Electronic
load mode SEQUOIA regulates the RMS current set by the user and works as the load for UUT.
In this operating mode, user could program the load to be applied to UUT using following
programming types.
i. Current Programming: User can program the RMS current, and phase required as load
for the UUT.
ii. Active and Reactive Power programming: User can program the Active power and the
Reactive Power required as load for the UUT.
iii. Parallel RLC programming: User can program the Resistance, Inductance and
Capacitance required as load for the UUT.
Figure 2-2: Energy flow in SINK operating type
2.2 Output Electrical Characteristics – All operating modes
The following output characteristics are common for Source mode, SINK-Grid simulator mode, and SINK-
Electronic Load mode.
Applicable for all Models
Output phase
1 Phase & 3 Phase for SQ0022/TA0022, SQA0030/TA0030 SQ0045/TA0045 and
single cabinet SQ0090/TA0090. Only 3 Phase for all other models; Neutral Floating
for all models
Coupling DC for all models (except for -XVC Option Range)
AC Output Voltage,
Full-Scale
Low-Range: 0 to 166 V (RMS)
High-Range: 0 to 333 V (RMS)
DC Output Voltage,
Full-Scale
Low-Range: 0 to 220 VDC
High-Range: 0 to 440 VDC
AC+DC Output
Voltage, Full-Scale
AC: Low: 0 - 166 V, High: 0 - 333 V
DC Offset: Low: 0 - 150 V, High: 0 - 220 V
Output Float Voltage 471 V(PK), maximum from either output terminal to chassis
Maximum RMS Output
Current
Maximum rating of RMS current for all SEQUOIA/TAHOE models are given in
Section 2.6 and Section 2.7.
Current, maximum amps indicated per phase available between 50 and 100 % of
voltage range. Maximum ambient temperate for full power operation at full-scale
voltage is 35° C.
Current derates linearly from 50% of voltage range to 20% of specified current at 5%
of voltage range as shown in Section 2.8, Figure 2-3.
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