ABB SPAU 341 C Voltage Regulator

1-051 Parameter Memory (EEPROM) Failure: Format EEPROM with V167 parameters and reconfigure parameters

3. Key points of daily maintenance

Regular inspection: Check the terminal wiring for looseness and proper heat dissipation every month, and clean the module dust screen (if any) every quarter;

Parameter backup: Backup parameters (such as U ₛ, ∆ U ₛ, U ᵣ/U ₓ) through serial software to avoid module failure causing parameter loss;

Spare parts preparation: It is recommended to reserve key spare parts such as power module (SPGU 240 A1) and I/O module (SPTR 6B32) to shorten the time for fault repair.

Installation and selection suggestions

1. Installation requirements

Environmental conditions: Avoid high temperature heat sources (such as the transformer body), installation location temperature ≤ 55 ℃, humidity ≤ 95% non condensing, protection level IP54 (requires compatible casing);

Wiring specifications: Voltage/current signal lines and power lines should be laid separately. The length of the fiber optic bus cable should be ≤ 100m (plastic fiber)/2km (glass fiber), and the bending radius should be ≥ 10 times the cable diameter;

Size and fixation: Adopting embedded installation, the panel opening size needs to match (214 × 139mm ± 1mm), and the installation depth can be adjusted through the SPA-ZX series height increasing frame (3 specifications).

2. Selection and matching

Power module selection: Select SPGU 240 A1 (80~265V AC/DC) for conventional scenarios, and SPGU 48 B2 (18~80V DC) for low-voltage DC systems;

Bus module selection: SPA-ZC 17 BB/21 BB for plastic fiber optic, SPA-ZC 17 MM/21 MM for glass fiber optic, and SPA-ZC 100 BB/MM for parallel minimum circulating current;

Cable selection: 100V shielded wire is used for voltage signals, CT dedicated shielded wire is used for current signals, and ABB recommends plastic/glass fiber optic cables (such as SPA-ZP 25A05) for optical fibers.