Overview
Manuals
Voltage Comparison
Flush Mounting
Protection Checks
Features:
- Detects single-, two- or three-phase voltage failure by comparing two secondary voltage sets.
- Flush-mount 7XP2020-2L housing with rear terminal modules for cubicle or panel installation.
- Fixed 18 to 24 V phase-to-starpoint operate difference with fast response below 18 ms under stated conditions.
- Six phase-failure LEDs and corresponding relay outputs identify which voltage set and phase is lower.
The relay is intended for installations with two similar potential-transformer secondary sets connected to the same busbar. It provides rapid fuse-failure supervision so associated distance protection or voltage-regulator functions can be inhibited before an incorrect operation occurs.
The 0CA00 execution identifies cubicle or panel flush mounting with rear terminal modules. Confirm the voltage circuits, vector group, terminal diagram and receiving cut-out before replacing a surface-mount 0BA00 unit.
The exact 7RE2800-0CA00 identity, condition, included hardware and receiving-system fit must be confirmed before purchase or replacement.
Siemens 7RE2800-0CA00 SIPROTEC Voltage Balance Relay documentation and related resources.
Important Notice: The uploaded PDF contains the original manufacturer first page and only the pages relevant to this model or identified product family. Confirm the complete order code, nameplate, connected hardware and installation requirements before replacement. Accessories, cables and certificates are included only when stated in the written quotation.
Connect two similar three-phase potential-transformer secondary sets from the same busbar and confirm the same vector group. The relay compares instantaneous values at the same phase angle.
The 0CA00 execution uses the 7XP2020-2L housing and rear W73077-A1327-U4 terminal modules. Verify the panel cut-out, terminal access and wiring designation before replacement.
Test each phase-voltage comparison, LED indication and output contact. Confirm the associated distance protection or voltage regulator is inhibited only for the intended imbalance condition.
