Automatic Transfer Switch 90A Plus Instruction

Surge Guard Plus
Automatic Transfer Switch with
RV Power Protection
120/240V, 90A, 60 Hz
Model
41290
Total electrical protection for your RV. Protects your RV
bumper to bumper from faulty park power. Optional, easy
to read LCD display constantly monitors and displays the
condition of power being supplied to your RV.
Automatic Transfer Switch Features
Unit will transfer to either shore power or generator
automatically when energized. In the event both shore and
generator powers are available, generator power will
dominate after a 30 second delay. Once the generator is
shut down, shore power will activate after a 2 second delay.
FEATURES
• 90A full rated contactor mounted on vibration
isolators to ensure quiet operation.
• Over/under voltage protection. Contactor opens
outside of (102-132V) range after 9-second delay.
Instantaneous trip at voltages above 140V and
below 70V.
• Over/under frequency protection. Contactor opens
outside of (54-70Hz) range after 30-second delay.
• Source power connection integrity. Contactor will
not close or will open in the event of an open
source conductor or miswire. (L1, L2, Neutral and
Ground.)
• Brown/blackout protection 2 min 15 second delay
is initiated after removal of power to ensure AC
compressor head bleed off. Feature can be
disabled on remote. (optional)
• Measures and displays both L1 & L2 load current
independently.
Surge Guard Features:
• 4-mode protection, 3,350 Joules
• Energy capacity – 130,000 Amps peak.
• Fuse protected L1/L2 surge suppressers.
• Plain text display (Replace Surge) of open fuses
indicating a failed MOV or open surge connection.
Remote Panel Indicator (Optional):
• Continuous visual indication of source voltage (L1,
L2) load current or diagnostics.
• Plain English display of faults. No cryptic error
codes.
• LCD technology with automatic light sensitive
back lighting for easy reading in any ambient light
condition.
3
rd
Party Display System:
• RS232 proprietary output data stream for
communication with external equipment.
Optional
L1 - Neut. L2 - Neut. Neutral Ground Ground Display
Reading Reading Status Status Current Example
102-132V 102-132V (Normal) (Normal) (Normal)
120V 25A
118V 30A
Less Than
75V
( Nor ma l ) ( Nor ma l ) ( No r mal ) ( No r mal)
L1
Open
(Normal)
Less than
75V
(Normal) (Normal) (Normal)
L2
Open
76-101V (Normal) (Normal) (Normal) (Normal)
Low Volt
L1=95V
(Normal) 76-101V (Normal) (Normal) (Normal)
Low Volt
L2=95V
Greater than
132V
( Nor ma l ) ( Nor ma l ) ( No r mal ) ( No r mal)
High Volt
L1=135V
(Normal)
Greater tha
n
132V
(Normal) (Normal) (Normal)
High Volt
L2=135V
Greater than
140V
( Nor ma l ) ( Nor ma l ) ( No r mal ) ( No r mal)
Rev er se
Pol ari ty
(Normal)
Greater tha
n
140V
(Normal) (Normal) (Normal)
Rev er se
Pol ari ty
( Nor ma l ) ( Nor ma l ) ( No r mal ) ( No r mal ) ( No r mal)
Low Freq
52Hz
( Nor ma l ) ( Nor ma l ) ( No r mal ) ( No r mal ) ( No r mal)
High Freq
75Hz
(Normal) (Normal) Open (Normal) (Normal)
Open
Neutr al
( Normal) ( Nor ma l ) (Nor ma l ) Op en (No r mal)
Open
Ground
Open L1
Fuse
Open L2
Fuse
Con t act
Mfg r.
Technology Research Corporation
[phone] · www.surgeguard.com · 5250 140
th
Avenue North, Clearwater, Florida 33760 · Fax [phone]
91048 Rev A