Parallel Operation; Introduction - Keysight Technologies RP7900 Serie Guide D'utilisation Et De Maintenance

Parallel Operation

Introduction

Primary/Secondary Operation
Independent Parallel Operation - RP795xA, RP796xA
Introduction
SHOCK HAZARD All paralleled units must be connected to ground through a grounded
power cord at all times. Any interruption of the protective (grounding) conductor or
disconnection of the protective earth terminal on any unit will cause a potential shock
hazard that could result in injury or death.
To Prevent Possible Equipment Damage:
Connect no more than twenty units of identical voltage ratings. All units must have
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the same voltage rating but current ratings can be different. All units must have the
same version firmware installed. Refer to
Always turn the AC power on and off together. Never leave any units powered on
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while the others are turned off.
For models RP795xA and RP796xA, always connect the negative output terminals
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of all paralleled units together to prevent damaging the Sharing bus.
Parallel operation lets you connect multiple power supplies together to create a system with higher
total current and power. This applies for current sourcing as well as current sinking operation. Refer to
Multiple Unit Connections
primary/secondary cables. Remember to also set the termination switches.
Units of dissimilar power ratings may be paralleled, provided they have identical voltage ratings. In
this case, the units will share current proportionally according to their current rating. For example, a
10 kW unit rated at 40 A and a 5 kW unit rated at 20 A will share their output current in a 2-to-1 ratio.
Models RP795xA, RP796xA
described under
Two modes of parallel operation are available:
Primary/Secondaryoperation - In this mode, the paralleled group is controlled through the primary
unit, and appears as a single higher-power supply. The primary unit provides the aggregate of most
source and measurement functions. The current sharing function is automatically enabled during
primary/secondary operation. This is the recommended method of paralleling units.
Independent parallel operation for Models RP795xA, RP796xA
paralleled units are programmed independently. Connect and program the output
Keysight RP7900 Series Operating and Service Guide
for detailed information on how to connect the outputs and the
Sharing Connections.
4 Using the Regenerative Power System
Instrument Identification
also require connecting the Sharing cable as
- In this mode all
for details.
On Couple and
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