SEPAM 100LD

Specification

Sepam 100 LD
Sepam 100 LD is a high impedance differential relay.
It provides restricted earth fault, busbar and machine protection.
Advantages
stability with respect to external faults
sensitivity to internal faults
speed (typical response time: 15 ms to 5 Is)
outputs with or without latching
local and remote acknowledgment
high level of immunity to electromagnetic interference.

Description
Sepam 100 LD is available in 4 versions:
single-phase for restricted earth protection
three-phase for busbar and machine protection
50 or 60 Hz
50 Hz single-phase: 100 LD X 51
50 Hz three-phase: 100 LD X 53
60 Hz single-phase: 100 LD X 61
60 Hz three-phase: 100 LD X 63.

The front of Sepam 100 LD includes:
2 signal lamps:
power “on” indicator
latching “trip” indicator indicating output relay tripping
protection setting dial
“reset” button for acknowledging output relays and the “trip” indicator.
When the button is activated, the “trip” indicator undergoes a lamp test.
The back of Sepam 100 LD includes:
input/output connectors:
an 8-pin connector for toroid inputs and remote acknowledgment
an 8-pin connector for “tripping” outputs and power supply
a 4-pin connector for “tripping” outputs
a microswitch used to configure the relay “with” or “without” latching.

Sepam 100 LD has:
1 or 3 current inputs with a common point according to whether it is a single-phase
or three-phase version
a logic input (isolated) for remote acknowledgment
“tripping” output relay with 5 contacts
3 normally open contacts and 2 normally closed contacts).
Sepam 100 LD operates in 5 voltage ranges (please specify when ordering):
24-30 Vdc
48-125 Vdc
220-250 Vdc
100-127 Vac
220-240 Vac.
Sepam 100 LD is associated with a stabilization plate (or 3 plates) with variable
resistance, enabling operation with 1 A or 5 A transformers.