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, and paralleling functions for bus PTs.
ISA-371GA can achieve bus voltage monitoring and paralleling (without PT switch reactivation)
ISA-371GB can achieve bus voltage monitoring and paralleling (with PT switch reactivation)
Basic Configuration
Protection Functions:
1. Three-stage bus PT broken wire alarm
2. Three-stage bus grounding alarm
3. Full station no-voltage alarm
4. Three-stage bus under-voltage alarm, over-voltage alarm
5. Alarm-initiated output contact (only available in 371GA)
Measurement and Control Functions:
1. Multi-channel (52 channels for 371GA, 20 channels for 371GB) remote signal input collection, with optional external reset and maintenance input.
2. 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
3. Remote control of switches and soft壓板, with remote control operation records and statistics (only available in 371GA)
4. Large-capacity event records, SOE records, self-test records, and instantaneous lockout protection records
5. Harmonic analysis function up to the 11th order
6. Bay-specific five-protection lockout remote control function with rules consistent with the five-protection host (only available in 371GA)
ISA-371GB Paralleling Function:
1. Supports up to 10 voltage paralleling paths
2. Paralleling via PT switch reactivation