6.5.2
Power Connections
This section describes how to establish safe power connections to the GridTime 3000.
The GridTime 3000 can be fitted with one or two power supplies. With a single supply configuration, it will have a
power supply connected to its P1A port. With a dual supply configuration, it will have one power supply connected to
its P1A and one connected to its P1B ports.
There are two power supplies that the GridTime 3000 can be ordered with:
• a low voltage supply.
• a high voltage supply.
The power supply bay in GridTime 3000 has a separate lid to allow in-field power supply maintenance to be
performed. See
11.6. Power Supply Fuse Replacement
11.7. Power Supply Replacement
DANGER
The following ports must have the power removed before opening the power supply bay:
• P1A (Power Supply)
• P1B (Power Supply)
• Alarm Relay 1 and 2
• HV MOSFET output
Important:
The power input connector requires an external over current protection rated to twice the
expected maximum operating current.
DANGER
Exposed terminals present the risk of electrocution. Ensure all wires are covered.
CAUTION
In case of fire or electric shock, cut-off power at the circuit breaker
6.5.2.1
Installation Best Practices
This section describes the installation best practices that should be used when wiring up power connections for the
GridTime 3000.
• A circuit breaker rated at twice the maximum expected operating current must be installed between the
GridTime 3000 device and the supply.
• For maximum redundancy:
– Each power supply should be fed by independent UPS (uninterruptible power supply) sources.
– A separate circuit breaker should be used for each supply.
• Equipment must be installed according to applicable local wiring codes and standards.
6.5.2.2
Power Supply Ratings
This section outlines the ratings of the GridTime 3000 power supplies.
Operating the device outside of these ratings may cause permanent hardware damage, Microchip assumes no
liability for any damage resulting from operating the device outside its operational ratings.
The voltage and current ranges for the two supplies are as follows. The ranges are marked on the product label on
the chassis.
Installation
©
2022 Microchip Technology Inc.
and its subsidiaries
Manual
DS00004572A-page 32
