Duplex VFD Jockey Pump Controller Panel for Philippine Fire Systems

A duplex VFD jockey pump controller is built around two things: a duplex configuration, meaning two jockey pump motors share the standby-pressure duty instead of one, and variable frequency drive control, meaning each motor's speed ramps up and down to track actual system pressure instead of switching fully on or off. The controller alternates which motor is designated lead and which is lag, either on a timer or on run-hour totals, so wear is split evenly across both motors instead of one unit absorbing every start-stop cycle. For fire protection systems, this keeps the fire main at setpoint pressure between fire pump starts without the pressure spikes a fixed-speed starter produces on every cycle. For booster applications feeding upper floors, the same ramp control reduces hammer in the riser when demand is light. The panel enclosure, drives, and control logic are sized together at the factory so the alternation and ramp settings match the jockey pump motors actually installed, rather than being tuned on site after installation. JOHOB quotes this panel against the motor nameplate data a buyer provides, so the sizing in the panel matches the pump it is paired with rather than a generic catalog size.

Most jockey pump duty in the Philippines still runs on a simple pressure switch or star-delta starter, because a jockey pump's job is narrow: hold standby pressure between fire pump starts, nothing more. A single star-delta starter on a single jockey pump covers that job at the lowest equipment cost, and it is the right choice for a building with light, infrequent cycling. Specifying engineers move to a duplex VFD panel instead when one of two conditions applies: the building's pressure tolerance is tight enough that full on/off cycling produces pressure swings the system cannot absorb, or the jockey duty cycles often enough that a single motor would wear out its starter contacts faster than the maintenance schedule allows. Splitting that duty across two motors with VFD ramp control addresses both at once: pressure holds steadier because the drive ramps rather than snaps on, and no single motor carries the full cycle count. This is a sizing and duty-cycle decision, not a universal upgrade. A building with light jockey duty does not need a duplex VFD panel, and JOHOB's quote process asks for the building's fire pump test data and cycling frequency before recommending one over a standard star-delta starter.

Each duplex VFD jockey pump panel ships with two industrial-grade variable frequency drives, one per jockey pump motor, wired through alternation logic that swaps lead and lag duty automatically rather than requiring a technician to toggle it manually. The enclosure carries CE marking on the electrical assembly, and the drives come from an ISO 9001 certified partner factory with TUV SUD testing on the panel build. Standard protection includes motor overload trip, phase-loss protection, and a bypass path so a single drive fault does not take both jockey pumps offline at once. Control can be specified as relay-based alternation for simpler installations or PLC/HMI based for sites that want running-hour logs and remote fault indication. The panel is built to match the motor voltage and horsepower a buyer specifies on the RFQ, not sold as one fixed configuration, because jockey pump motors vary enough across fire protection and booster installations that a one-size panel missizes more installations than it fits.

Sizing a duplex VFD jockey pump panel starts with the jockey pump motor nameplate: voltage, phase, full-load amps, and horsepower. JOHOB asks for this data plus the system's cycling pattern (how often the jockey pump starts per day or per hour) on every RFQ, because the drive rating and alternation timer settings both depend on it. For fire protection installations, the jockey pump's role is to hold pressure between fire pump starts, so the panel is sized to the jockey motor, not to the larger fire pump it supports. Sizing the drive to the fire pump's horsepower instead of the jockey pump's is a common mistake on panels sourced without a proper RFQ review. Buyers who do not have nameplate data on hand yet can send the pump model number; JOHOB cross-references published motor specs for sizing before confirming a quote. Response to a sizing RFQ is within 1 business day under JOHOB's standard service terms.

Duplex VFD jockey pump panels ship under JOHOB's standard terms: 21 to 35 days ex-stock when a matching configuration is on hand, 45 to 90 days for a made-to-order build matched to specific motor and voltage requirements. Pricing is quote-based; JOHOB does not publish panel prices, since VFD rating, enclosure spec, and control type (relay versus PLC/HMI) all move the price per unit. Standard 12 percent VAT applies to VAT-registered buyers. Zero-VAT treatment applies for PEZA and SBMA locators and for exporters, consistent with JOHOB's standard commercial terms across all equipment categories. Delivery covers NCR, the rest of Luzon, Visayas, and Mindanao, including PEZA, SBMA, and Clark zone sites, so a buyer outside Metro Manila is not quoted a separate freight-only arrangement. RFQs submitted through JOHOB's contact form receive a response within 1 business day, which for a duplex panel means a request for the jockey motor nameplate data needed to confirm sizing and lead time.

A duplex VFD jockey pump panel sits between two of JOHOB's product lines rather than inside just one. On the fire protection side, it pairs with JOHOB's fire reserve tanks and sprinkler kits as the pressure-maintenance component of a fire suppression system, alongside the fire pump itself. On the pumping and pressure systems side, it is one configuration of the broader VFD duplex control panel line JOHOB supplies for booster and transfer duty, built on the same electrical panel category as JOHOB's star-delta and MCC panels. Buyers comparing fire protection equipment should also look at JOHOB's fire pump and hydrant pump package pages, since a jockey pump panel is specified alongside, not instead of, the main fire pump. Buyers comparing booster applications should look at the duplex versus triplex booster pump guidance, since the same lead/lag alternation logic used here also governs larger multi-pump booster arrays. JOHOB's quote team routes a jockey pump panel RFQ through the same pricing and lead-time process used for its other electrical panels, so a buyer sourcing a duplex VFD jockey panel alongside a fire pump or booster system gets one consolidated quote rather than separate timelines for each component.