Duty Cycle Monitor
Security Limits
Access Factory
Code Write Read Scroll High Low Incr Parameter Settings
170 1 0 NO 9999 1 1 100% Interrupter Duty Factor 97
• Use CHANGE key to enter value.
• Duty factor is value listed in 100% Duty Cycle Factor
column x 10
5
.
Using the table below, select the appropriate recloser
interrupting duty cycle factor and enter that value
using Access Code 170.
Security Limits
Access Factory
Code Write Read Scroll High Low Incr Parameter Settings
171 1 0 YES 999.9 0 0.1 Bushing 1-2 Phase Interrupter Duty (%) 0
172 1 0 YES 999.9 0 0.1 Bushing 3-4 Phase Interrupter Duty (%) 0
173 1 0 YES 999.9 0 0.1 Bushing 5-6 Phase Interrupter Duty (%) 0
• Information is accessible via the keyboard or Digital
Communications.
• Use CHANGE key to enter value or reset to zero.
• A new recloser, not in service, has 0% interrupting
duty cycle. As the recloser is used, the duty cycle
increases. When the interrupting duty reaches
100%, the interrupter contacts should be examined
and replaced.
The Duty Cycle Monitor provides keyboard accessible duty
cycle information
• The Duty Cycle measures and records duty for each indi-
vidual phase in non-volatile memory.
• The recloser duty is measured and stored on the basis of Cur-
rent
1.5
x Number of Operations for Each Phase (ANSI C37.61).
• Readout is based on a percentage of total duty cycle for
each phase.
• Duty record can be adjusted or reset if recloser is changed-
out, serviced, etc.
• Feature is enabled and disabled via Access Code 24
(ON/OFF) through Security Level 1.
• Readout does not require security access.
• Information is also accessible via Digital Communications.
TABLE 9
Interrupter Duty Factor
Interrupting 100% Duty
Recloser Rating Cycle
Type (RMS Sym A) Factor
RXE, RVE 6000 A 97
WE 12000A @ 4.8 kV 257
WE 10000A @ 14.4 kV 196
VWE
VWVE27 12000 A 1045
VWVE38X
WVE27 8000 A 140
WVE38X 8000 A 140
VSA12 12000 A 1045
VSA16 16000 A 1608
Interrupting 100% Duty
Recloser Rating Cycle
Type (RMS Sym A) Factor
VSA20
VSA20A 20000 A 2248
VSA20B
VSO12 12000 A 1045
VSO16 16000 A 1608
NOVA15
NOVA27 12000 A 1111
NOVA38
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