Power Failure Emergency Transfer (Dpft) Installation - Toshiba strata CT Installation & Maintenance Manual

Peripheral Installation
To RSTU/PSTU-A1
To RSTU/PSTU-B1
To PCOU-A1
To PCOU-B1
RSTU or PSTU
Control
H
-24V (Input)
C
Figure 6-1 DPFT Circuit Diagram

Power Failure Emergency Transfer (DPFT) Installation

1.
Note
2.
3.
4.
5.
6.
6-2
J2-27
J2-2
J1-27
J1-2
J1-50
DG (Input)
J1-25
Notes
• Representation of first of eight circuits.
• Conditions shown with AC power (-24VDC) off.
Mount the DPFT on or near the MDF.
See Chapter 4 – Universal Slot PCB
Using 25-pair cables with amphenol-type connectors (female for DPFT connector J1,
male for DPFT connector J2), connect the DPFT to two 237 Krone strips.
Connect the Exchange lines selected for emergency use to the DPFT J1-block "PSTNA"
and "PSTNA-B" terminals.
Connect the PCOU circuits related to the emergency Exchange lines to the DPFT J1-
block "PCOU-A" and "PCOU-B" terminals.
Connect the standard telephone stations selected for emergency use to the DPFT J2-
block "TEL-A" and "TEL-B" terminals.
Connect the RSTU or PSTU standard telephone circuits related to the emergency
standard telephones to DPFT J2-block "PSTU-A" and "PSTU-B" terminals.
Telephone Current
Detector
Wiring, DPFT/MDF interconnecting tables.
J2-26
To TEL-A1
J2-1
To TEL-B1
J1-26
To Exchange
line -A1
J1-1
To Exchange
line -B1
Relay
1498
Strata CT I&M Manual October 2000