Brand: SIEMENS
Category: Control Unit
Document Type: Manual
Language: EN
Manual for 7SA522
Uploaded: Nov. 21, 2025, 7:02 p.m.
Manual Publish Date: 2000-11-00
Warranty Information
No warranty information is available in the provided document.
1.1 Overall Operation
The numerical Distance Protection SIPROTEC® 7SA522 is equipped with a powerful 32 Bit microprocessor, enabling full numerical processing from measured value acquisition to command output to circuit breakers. The device features analog inputs for measuring currents and voltages, which are transformed and matched to internal signal levels. It includes 4 current inputs (3 for phase currents, 1 configurable for earth current or other measurements) and 4 voltage inputs (3 for phase-earth voltages, 1 optional for displacement or other voltages). These signals are processed by input amplifier groups.
The device can be operated via an operator control panel on the device or through the DIGSI® 4 software. It supports various communication interfaces for connection to PCs, modems, and SCADA systems.
Troubleshooting and error codes
| F.No. | Description | Function | Type of Information | Log-Buffers | Configurable in Matrix | IEC 60870-5-103 |
|---|---|---|---|---|---|---|
| 7176 | Backup O/C Pickup L12 (O/C Pickup L12) | Backup over-current | OUT | ON | LED | BO 64 76 2 |
| 7177 | Backup O/C Pickup L12E (O/C Pikkup L12E) | Backup over-current | OUT | ON | LED | BO 64 77 2 |
| 7178 | Backup O/C Pickup - Only L3 (O/C PU 1p. L3) | Backup over-current | OUT | ON | LED | BO 64 78 2 |
| 7179 | Backup O/C Pickup L3E (O/C Pickup L3E) | Backup over-current | OUT | ON | LED | BO 64 79 2 |
| 7180 | Backup O/C Pickup L31 (O/C Pickup L31) | Backup over-current | OUT | ON | LED | BO 64 80 2 |
| 7181 | Backup O/C Pickup L31E (O/C Pikkup L31E) | Backup over-current | OUT | ON | LED | BO 64 81 2 |
| 7182 | Backup O/C Pickup L23 (O/C Pickup L23) | Backup over-current | OUT | ON | LED | BO 64 82 2 |
| 7183 | Backup O/C Pickup L23E (O/C Pikkup L23E) | Backup over-current | OUT | ON | LED | BO 64 83 2 |
| 7184 | Backup O/C Pickup L123 (O/C Pikkup L123) | Backup over-current | OUT | ON | LED | BO 64 84 2 |
| 7185 | Backup O/C Pickup L123E (O/C PickupL123E) | Backup over-current | OUT | ON | LED | BO 64 85 2 |
| 7191 | Backup O/C Pickup I>> (O/C PICKUP I>>) | Backup over-current | OUT | ON | LED | BO 64 91 2 GI |
| 7192 | Backup O/C Pickup I> (O/C PICKUP I>) | Backup over-current | OUT | ON | LED | BO 64 92 2 GI |
| 7193 | Backup O/C Pickup Ip (O/C PICKUP Ip) | Backup over-current | OUT | ON | LED | BO 64 93 2 GI |
| 7201 | O/C I-STUB Pickup (I-STUB PIKKUP) | Backup over-current | OUT | ON | LED | BO 64 101 2 GI |
| 7211 | Backup O/C General TRIP command (O/C TRIP) | Backup over-current | OUT | OFF | LED | BO 64 111 2 |
| 7212 | Backup O/C TRIP - Only L1 (O/C TRIP 1p.L1) | Backup over-current | OUT | ON | LED | BO 64 112 2 |
| 7213 | Backup O/C TRIP - Only L2 (O/C TRIP 1p.L2) | Backup over-current | OUT | ON | LED | BO 64 113 2 |
| 7214 | Backup O/C TRIP - Only L3 (O/C TRIP 1p.L3) | Backup over-current | OUT | ON | LED | BO 64 114 2 |
| 7215 | Backup O/C TRIP Phases L123 (O/C TRIP L123) | Backup over-current | OUT | ON | LED | BO 64 115 2 |
| 7221 | Backup O/C TRIP I>> (O/C TRIP I>>) | Backup over-current | OUT | ON | LED | BO 64 121 2 |
| 7222 | Backup O/C TRIP I> (O/C TRIP I>) | Backup over-current | OUT | ON | LED | BO 64 122 2 |
| 7223 | Backup O/C TRIP Ip (O/C TRIP Ip) | Backup over-current | OUT | ON | LED | BO 64 123 2 |
| 7235 | O/C I-STUB TRIP (I-STUB TRIP) | Backup over-current | OUT | ON | LED | BO 64 135 2 |
| 7325 | CB1-TEST TRIP command - Only L1 (CB1-TESTtrip L1) | Testing | OUT | ON OFF | LED | BO 153 25 2 GI |
| 7326 | CB1-TEST TRIP command - Only L2 (CB1-TESTtrip L2) | Testing | OUT | ON OFF | LED | BO 153 26 2 GI |
| 7327 | CB1-TEST TRIP command - Only L3 (CB1-TESTtrip L3) | Testing | OUT | ON OFF | LED | BO 153 27 2 GI |
| 7328 | CB1-TEST TRIP command L123 (CB1-TESTtrip123) | Testing | OUT | ON OFF | LED | BO 153 28 2 GI |
| 7329 | CB1-TEST CLOSE command (CB1- TEST close) | Testing | OUT | ON OFF | LED | BO 153 29 2 GI |
| 7345 | CB-TEST is in progress (CB-TEST running) | Testing | OUT | ON OFF | LED | BO 153 45 2 GI |
| 7346 | CB-TEST canceled due to Power Sys. Fault (CB-TSTstop FLT.) | Testing | OUT_Ev | ON | ||
| 7347 | CB-TEST canceled due to CB already OPEN (CB-TSTstop OPEN) | Testing | OUT_Ev | ON | * | |
| 7348 | CB-TEST canceled due to CB was NOT READY (CB-TSTstop NOTr) | Testing | OUT_Ev | ON | ||
| 7349 | CB-TEST canceled due to CB stayed CLOSED (CB-TSTstop CLOS) | Testing | OUT_Ev | ON | * | |
| 7350 | CB-TEST was succesful (CB-TST .OK.) | Testing | OUT_Ev | ON | ||
| >Back Light on (>Light on) | Device | SP | ON OFF | BI | ||
| CB1-TEST trip/close Phases L123 (CB1tst 123) | Testing | - | * | * | * | |
| CB1-TEST trip/close - Only L1 (CB1tst L1) | Testing | - | * | * | * | |
| CB1-TEST trip/close - Only L2 (CB1tst L2) | Testing | - | * | * | * | |
| CB1-TEST trip/close - Only L3 (CB1tst L3) | Testing | - | * | * | * | |
| Clock Synchronization (SynchClock) | Device | IntSP_Ev | ON OFF | LED | BO | |
| Control Authority (Cntrl Auth) | Control Authorization | DP | ON OFF | LED | BO 101 85 1 GI | |
| Control Authority (Cntrl Auth) | Control Authorization | IntSP | ON OFF | LED | ||
| Controlmode LOCAL (ModeLOCAL) | Control Authorization | DP | ON OFF | LED | BO 101 86 1 GI | |
| Controlmode LOCAL (ModeLOCAL) | Control Authorization | IntSP | ON OFF | LED | ||
| Controlmode REMOTE (ModeREMOTE) | Control Authorization | IntSP | ON OFF | LED | ||
| Group A (Group A) | Change Group | IntSP | ON OFF | LED | BO 128 23 1 GI | |
| Group B (Group B) | Change Group | IntSP | ON OFF | LED | BO 128 24 1 GI | |
| Group C (Group C) | Change Group | IntSP | ON OFF | LED | BO 128 25 1 GI |