UL Catalog 2022-2023 - Flipbook - Page 72
DISPENSER HOOK
ISOLATION
The FE PETRO® dispenser hook isolation device prevents
electrical feedback between dispenser hook circuits as
required by most electrical codes.
HIGHLIGHTS
SPECIFICATIONS
• Optically isolates inputs from up to eight dispensers,
preventing damage to dispenser relay boards caused by
cross-phasing.
• Enclosure size: 8½" × 5" × 3" (215 mm × 127 mm × 76 mm).
• Prevents electrical feedback between dispenser hook
circuits during periods of maintenance and service as
required by NEC 514-3, 2002 and other international codes.
• Can be supplied factory-wired in tandem with the FE
PETRO® Smart Controller or the FE PETRO® standard
control box.
• Eliminates false STP run due to voltage leakage of multiple
dispensers connected in parallel.
• Eight optically isolated inputs from dispenser.
• One STP-DHI required per product grade for up to
eight dispensers.
• STP-DHI: 120 V 30 V A input from supply, eight 120 V 10mA
inputs from dispensers.
• Output fuse rating: 250 V 1A, fast-acting.
• 300 Volt surge protection.
• Maximum ambient temperature rating: 120 °F.
• Fuse-protected output to submersible pump controller.
• LEDs indicate when source power is applied and dispenser
hook signals are present.
• The STP-DHI can retrofit to any existing site.
• Compatible with any submersible pump controller.
Approvals
• Consult factory for other applicable approvals.
Quality Certification
INPUT 110V
NEUTRAL
OUTPUT 110V
NEUTRAL
TO ADDITIONAL STP-DHI(S)
HOOK OUT TERMINALS
*
• Franklin Fueling Systems is an ISO 9001
Certified Manufacturer.
Conventional
1
RV5
RV5
FUSE, 250 VAC, 1 AMP
(FAST-ACTING TYPE)
TO ADDITIONAL
STP-DHI(S) POWER SUPPLY
& NEUTRAL TERMINALS
*
2
FROM
DISPENSERS 3
STP
CONTROL
BOX
4
NEUTRAL WIRE
TERMINAL
STP-DHI
120 VOLT
SUPPLY WIRE TERMINAL
1
DISPENSER #1 (SUPPLY & NEUTRAL),
TYPICAL WIRING FOR ALL DISPENSERS
Wiring is
multiple
units
are are
connected
together.
Wiring
is polarity-sensitive
polarity-sensitivewhen
when
multiple
units
connected
together.
*
72
FROM
DISPENSERS 2
(UP TO 8
3
PER DHI)
4
STP-DHI
STP
CONTROL
BOX