Hrg - Siemens SmartGear IE User Manual

signal or NTP signal from current site GPS systems. Once the Sm@rtGear IE CPU is configured, all Logging and Trending time
stamping will be IRIG-B or NTP compliant. This allows for detailed and accurate sequence of events analysis. Time synchronization of
downstream devices is also adjusted in the Sm@rtGear IE CPU to auto sync every 10ms.
The Sm@rtGear IE CPU is also intelligent in that it will analyze how far off its time is from the received signal and start adjusting
automatically. This allows for continued accuracy even if the GPS or IRIG-B signal is lost.
In the event a GPS Time Sync is required but not available on site, Sm@rtGear IE can provide the full package. A Spectracom
SecureSync Synchronization System can be provided to integrate with the Sm@rtGear IE CPU via IRIG-B or NTP. A few features of the
Securesync are:
• Multi-GNSS available (GPS/GLONASS)
• SAASM available in GB-GRAM and MRU receivers
• Internal precision time-keeping via TCXO, OCXO or Rb oscillator
• Multiple, prioritized input references
Securesync can accept up to 6 additional cards provided a wide array of input/output options and through the use of
prioritization settings can be set up for redundant use adding additional layers of protection to the synchronization system.

9.6 HRG

High Resistance Grounding Equipment coordinates the use of resistors and control devices, creating a high-resistance ground for a
power system.
The HRG unit ships from the factory configured for use at the system voltage with the fault current tap set at 5 amps and the pulsing
tap set at 10 amps. If the charging current of the system is known, this may be changed accordingly; otherwise, the system charging
current can be measured via the user interface once the system is operational. The default alarm settings are as follows (unless
otherwise specified):
The details of the information displayed from the HRG are as follows:
• Active Alarms
–
Voltage Alarm
–
Current Alarm
–
Phase Loss Voltage Alarm
–
Voltage Above Max Alarm
–
Voltage Below Min Alarm
–
Current Above Max Alarm
–
Current Below Min Alarm
–
Phase A Faulted
–
Phase B Faulted
–
Phase C Faulted
–
NGR Failed
–
Phase A Fault Monitor
–
Phase B Fault Monitor
–
Phase C Fault Monitor
• Communications Parameters
–
IP Address
–
Subnet
–
Gateway
–
RS-485 ID
–
RS-485 Time Out
–
RS-485 Retries
–
Baud Rate
• System Settings
–
System Rated Voltage
–
System Rated Current
–
Sensing Resistor Voltage Alarm Setting – Normal
–
Sensing Resistor Voltage Alarm Setting
–
NGR Maximum Voltage
–
NGR Minimum Voltage
–
NGR Maximum Current
–
NGR Minimum Current
–
Scaled NGR Voltage
Sm@rtGear™ IE User Manual
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