ISA-371G Bus Voltage Measurement and Control Device

Changyuan Shenru ISA-371G Bus Voltage Measurement and Control Device

ISA-371G is a bus voltage measurement and control device that implements monitoring, measurement and control, paralleling, and other functions for bus PTs.

ISA-371GA can achieve bus voltage monitoring and paralleling (without PT knife switch reactivation)
ISA-371GB can achieve bus voltage monitoring and paralleling (with PT knife switch reactivation)

ISA-371G Device Basic Configuration Table

Protection Functions:
• Three-stage bus PT broken wire alarm
• Three-stage bus grounding alarm
• Whole station no-voltage alarm
• Three-stage bus under-voltage alarm, over-voltage alarm
• Alarm-initiated output contact (only available in 371GA)
Measurement and Control Functions:
• Multi-channel (371GA has 52 channels, 371GB has 20 channels) remote signal input collection, with optional external reset and maintenance input.
• Ua1, Ub1, Uc1, 3Uo1, Ua2, Ub2, Uc2, 3Uo2, Ua3, Ub3, Uc3, 3Uo3, Uab1,
Ubc1, Uca1, Uab2, Ubc2, Uca2, Uab3, Ubc3, Uca3, Fr1, Fr2, Fr3, totaling 24 remote measurements
• Remote control of switch and soft压板, with remote control operation records and statistics (only available in 371GA)
• Large-capacity event records, SOE records, self-test records, instantaneous lockout protection records
• Up to 11th harmonic analysis function
• Remote control function with interval five-prevention lockout following the same rules as the five-prevention host (only available in 371GA)
ISA-371GB Paralleling
Function:
• Can achieve up to 10 channels of voltage paralleling
• Paralleling via PT knife switch reactivation