ABB RET670 Product Guide

Monitoring
Table 80. Measurements CVMMXN
Function Range or value Accuracy
Frequency (0.95-1.05) × f
r
± 2.0 mHz
Voltage (0.1-1.5) ×U
r
± 0.5% of U
r
at U£U
r
± 0.5% of U at U > U
r
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
Active power, P 0.1 x U
r
< U < 1.5 x U
r
0.2 x I
r
< I < 4.0 x I
r
± 1.0% of S
r
at S ≤ S
r
± 1.0% of S at S > S
r
Conditions:
0.8 x U
r
< U < 1.2 U
r
0.2 x I
r
< I < 1.2 I
r
Reactive power, Q 0.1 x U
r
< U < 1.5 x U
r
0.2 x I
r
< I < 4.0 x I
r
Apparent power, S 0.1 x U
r
< U < 1.5 x U
r
0.2 x I
r
< I < 4.0 x I
r
Power factor, cos (φ) 0.1 x U
r
< U < 1.5 x U
r
0.2 x I
r
< I < 4.0 x I
r
± 0.02
Table 81. Phase current measurement CMMXU
Function
Range or value Accuracy
Current at symmetrical load (0.1-4.0) × I
r
± 0.3% of I
r
at I ≤ 0.5 × I
r
± 0.3% of I at I > 0.5 × I
r
Phase angle at symmetrical load (0.1-4.0) × I
r
± 1.0° at 0.1 × I
r
< I ≤ 0.5 × I
r
± 0.5° at 0.5 × I
r
< I ≤ 4.0 × I
r
Table 82. Phase-phase voltage measurement VMMXU
Function
Range or value Accuracy
Voltage (10 to 300) V ± 0.5% of U at U ≤ 50 V
± 0.2% of U at U > 50 V
Phase angle (10 to 300) V ± 0.5° at U ≤ 50 V
± 0.2° at U > 50 V
Table 83. Phase-neutral voltage measurement VNMMXU
Function
Range or value Accuracy
Voltage (5 to 175) V ± 0.5% of U at U ≤ 50 V
± 0.2% of U at U > 50 V
Phase angle (5 to 175) V ± 0.5° at U ≤ 50 V
± 0.2° at U > 50 V
Transformer protection RET670 2.0
1MRK 504 141-BEN C
Product version: 2.0
88 ABB

ABB RET670 Specifications

General

Rated Frequency	50/60 Hz
Inputs	Analog and binary inputs
Application	Protection of power systems
Communication Protocols	IEC 61850, DNP3, Modbus
Operating Temperature Range	-25°C to +55°C
Mounting	Rack mounted
Number of Binary Inputs	Up to 48
Number of Binary Outputs	32
Protection Functions	Overcurrent Protection
Outputs	Binary outputs
Enclosure	IP 54
Type	Line Differential Protection
Number of Analog Inputs	24