I.L. 40-385.1B
iv
(5/92)
• All features listed as standard for the Non-Pilot
MDAR V2.00 are included in the Pilot system
• Independent pilot phase and ground distance
units
• Permissive Overreach Transfer Trip (POTT) /
Simplified Unblocking
• Permissive Underreach Transfer Trip (PUTT)
• Directional Comparison Blocking Scheme (BLK)
• POTT or Simplified Unblocking Weakfeed
• • Instantaneous Forward Directional Overcurrent
Function for High Resistance Ground Fault Sup-
plement to Overreach Pilot, with adjustable timer
(from 0 to 15) in 1 cycle steps or Block
• Instantaneous Reverse Directional Overcurrent
Ground Function
– Carrier Ground Start on Blocking Scheme
– Weakfeed System Application
• • Reclose Block on Breaker Failure (BF) Squelch
• 3-Terminal Line Application
• Weakfeed Trip
Features Included in Version V2.00
The following features are
standard for the Pilot MDAR V2.00:
Features Included in Version V2.00
The following features are
optional for the Non-Pilot and the Pilot MDAR V2.00:
• Optional communications attachment
RS232C/PONI
INCOM/PONI
• • Optional
16 sets of oscillographic data and intermediate
target data. Each set includes 7 analog graphic
inputs and 24 digital intermediate targets with 8
samples per cycle. Each analog input contains 1
prefault and 7 fault cycles. (Data collection can be
started by TRIP, Z2PU, Z2Z3 or
∆
V
∆
I depending
on the setting of OSC.)
• Optional FT-14 switches
• Optional Out-of-Step Block
• Optional Single-Pole-Trip (SPT) logic and out-
puts:
– SPT/RI1 on first
φ
GF and 3PT on other fault
types.
– 3PT/RB if reclosing on a permanent fault.
– 3PT/RB if second phase(s) fault during single
phasing.
– 3PT on a time delay limit (o.35-5.0 sec in 0.05
sec steps) if the system fails to reclose (62T).
• Optional OSC Settings (trip or
∆
V
∆
I)
• Optional TRIP/RI mode selector for:
TTYP SET AT
TRIP
RI
OFF
3PT
NO
1PR
3PT
RI2 (
φ
G)
2PR
3PT
RI2 (
φ
G,
φφ
G)
3PR
3PT
RI2 (
φ
G, M
φ
)
SPR
SPT (
φ
G)
RI1
3PT (M
φ
)
N0
SR3R
SPT (
φ
G)
RI1
3PT (M
φ
)
RI2
SPT
=
Single Pole Trip
3PT
=
3 Pole Trip
RI
=
Reclose Initiate
RB
=
Reclose Block
RI2
=
3 Pole Reclose Initiate
RI1
=
Single Pole Reclose Initiate
φ
G
=
Single Phase-to-Ground Faults
M
φ
=
Multi-Phase Faults
φφ
=
2-Phase Faults
Summary of Contents for REL-300
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Page 135: ...I L 40 385 1B SD 6 5 92 Figure SD 2 MDAR Block Diagram sheet 1 of 1 Sub 1 1611C12...