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Installation instructions for mains wire-in protectors
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Status indication (LED units)
ESP units give a continuous visual display of their status. They
have a two colour indicator light for each phase and neutral:
Green only
= Full protection, power on.
Green + Red
= WARNING. Reduced protection,
replace unit as soon as possible.
Red only
= NO PROTECTION. Replace ESP unit immediately.
No lights
= No power connection or system fault.
Check external fuses and connections.
Status indication (LCD units)
Following installation, switch the power supply on.
The LCD display will illuminate for 15 seconds and show
the introductory status screen for correct performance.
The introductory screen alternates to show protector status
every 2-3 seconds (ESP 415D1R example shown).
Introductory screen
Protector status
Normal
operation:
ESP 415D1R
SURGE
PROTECTION
ACTIVE
L1
L2
L3
N
N/E <
<<<
< 30V
RLY ACTIVE
=
=
=
=
The unit is now fully operational. These display messages will
be visible and alternate at all times the protector is connected
and is functioning correctly.
Where a fault or power supply issue is detected by the
protector, the LCD message will change, the backlight will
flash, and the protector will sound an alert. Several types of
fault will trigger a response from the ESP protector.
Line fault – no connection or system fault
Live (including neutral) connections will register a ‘
’ if
protected and functioning properly. If any of the live
connections is lost, the LCD screen will query this with ‘OFF?’.
The example below shows a power supply issue for L1.
Disconnect the unit and check external fuses and connections.
Warning screen
Alternates with
L1 Fault
(no power)
[BACK-LIT
DISPLAY
ON - FAST
FLASHING]
[AUDIBLE
ALERT]
L1
L2
L3
N
N/E <
<<<
<
30V
RLY DISABLED
= OFF?
=
=
=
WARNING!
DISCONNECT
AND
INVESTIGATE
TNB 1639 ESP D1 Instructions (Final Art) new size 1/4/10 09:51 Page 26
