ABB 615 Series - Technical Data

4.7.3.9 Technical data
Table 620: 21G Technical data
Characteristic
Value
Operation accuracy Depending on the frequency of the measured
current and voltage: f
n
±2 Hz
±3.0% of the set value or ±0.2 %Zb
Pickup time
1)2)
Typically 50 ms
Reset time Typically 40 ms
Reset ratio Typically 1.04
Retardation time <40 ms
Trip time accuracy ±1.0% of the set value or ±20 ms
1) f
n
= 50 Hz, results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
4.8 Power protection
4.8.1 Underpower protection 32U
4.8.1.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Underpower protection DUPPDPR P< 32U
4.8.1.2 Function block
TRIP
PICKUP
V_C
V 1
BLOCK
32U
DISABLE
V_A
V_B
I_C
I
1
I_A
I_B
GUID-75685A44-A694-429C-BF8D-8F8174A6A775 V1 EN
Figure 357: Function block
1MAC059074-MB A Section 4
Protection functions
615 series ANSI 717
Technical Manual