ABB REB670 - Measurements CVMMXN; Phase Current Measurement CMMXU; Phase-Phase Voltage Measurement VMMXU; Phase-Neutral Voltage Measurement VNMMXU

Monitoring
Table 31. Measurements CVMMXN
Function Range or value Accuracy
Frequency (0.95-1.05) × f
r
± 2.0 mHz
Connected current (0.2-4.0) × I
r
± 0.5% of I
r
at I £ I
r
± 0.5% of I at I > I
r
Table 32. Phase current measurement CMMXU
Function Range or value Accuracy
Current (0.1-4.0) × I
r
± 0.2% of I
r
at I ≤ 0.5 × I
r
± 0.2% of I at I > 0.5 × I
r
Phase angle (0.1–4.0) x I
r
± 0.5° at 0.2 × I
r
< I < 0.5 × I
r
± 0.2° at 0.5 × I
r
≤ I < 4.0 × I
r
Table 33. Phase-phase voltage measurement VMMXU
Function Range or value Accuracy
Voltage (10 to 300) V ± 0.3% of U at U ≤ 50 V
± 0.2% of U at U > 50 V
Phase angle (10 to 300) V ± 0.3° at U ≤ 50 V
± 0.2° at U > 50 V
Table 34. Phase-neutral voltage measurement VNMMXU
Function
Range or value Accuracy
Voltage (10 to 300) V ± 0.3% of U at U ≤ 50 V
± 0.2% of U at U > 50 V
Phase angle (10 to 300) V ± 0.3° at U ≤ 50 V
± 0.2° at U > 50 V
Table 35. Current sequence component measurement CMSQI
Function
Range or value Accuracy
Current positive sequence, I1
Three phase settings
(0.1–4.0) × I
r
± 0.2% of I
r
at I ≤ 0.5 × I
r
± 0.2% of I at I > 0.5 × I
r
Current zero sequence, 3I0
Three phase settings
(0.1–1.0) × I
r
± 0.2% of I
r
at I ≤ 0.5 × I
r
± 0.2% of I at I > 0.5 × I
r
Current negative sequence, I2
Three phase settings
(0.1–1.0) × I
r
± 0.2% of I
r
at I ≤ 0.5 × I
r
± 0.2% of I at I > 0.5 × I
r
Phase angle (0.1–4.0) × I
r
± 0.5° at 0.2 × I
r
< I < 0.5 × I
r
± 0.2° at 0.5 × I
r
≤ I < 4.0 × I
r
Busbar protection REB670
1MRK505212-BEN E
Pre-configured
Product version: 1.2
ABB 43