DC Earth Fault Relay Complete With DC Earth Fault CT 9-36VDC Powered
A Din rail mounted current sensing relay dedicated for DC earth fault monitoring, such as insulation deterioration on a DC system. The unit is supplied complete with a dedicated DC Earth Fault CT
A Din rail mounted current sensing relay dedicated for DC earth fault monitoring, such as insulation deterioration on a DC system. The unit is supplied complete with a dedicated DC Earth Fault CT type FOX21.CTD, this allows the relay to have two switchable earth fault ranges of 1-20 mA and 10-200 mA. The unit is fitted with four LED's to aid status diagnosis
- Green LED = Auxiliary supply voltage healthy
- Red LED = Output relay energised
- Top Amber LED = Positive leg earth fault
- Bottom Amber LED = Negative leg earth fault
- Both Amber LED's = Open circuit or short circuit between CT & relay (also if Test function is used)
The amber earth fault LED's will start to illuminate at either 1 mA or 10 mA (depending on which range has been set), but the output relay will not de-energise until the setpoint has been reached, plus any delay “ON” time set, which is adjustable 0.1-10 s. The output relay is fail safe, ie energised when healthy, de-energises on earth fault.
After tripping on an earth fault and the fault level starts to fall below the setpoint it has to fall for a further 2% (hysteresis) plus any delay “OFF” time set before the output relay energises again. This is “AUTO RESET” . However, should the optional latch facility be utilised via a NC link between terminals Y1 & Y2 the NC link will need to be opened or the auxiliary supply removed to facilitate a reset, providing the fault is below the setpoint level plus hysteresis, “MANUAL RESET”.
The relay is also fitted with a relay Test input between terminals Y3 & Y4 via a NO input
Please Note: The YWRI.DEF and its associated CT are designed to monitor insulation breakdown. It must not be used as a safeguard for life protection.
- Auxiliary supply: 9-36 VDC (other options available)
- Power consumption: Max 3 W
- Earth Fault ranges: 1-20mA / 10-200 mA switchable
- Hysteresis: Fixed at 2% of set value (other values on request)
- Tripping delay “ON”: Adjustable 0.1-10 s
- Tripping delay “OFF”: Adjustable 0.1-10 s
- Repeat accuracy: +2% at constant ambient
- FOX.21CTD internal diameter: 21 mm
- Max distance between CT and relay: 100 m (200 m loop in total)
- Recommended cable: 1.5 mm tri rated
- Operating temperature: -20 °C to +65 °C
- Output relay: Max power 2200 VA, 30 W DC, 250 VA CDC @ 10 Amps AC1, 1 Amp DC1
- Mechanical Life: 30 Million ops
- Electrical life: 200 K at 2200 VA (resistive)
- Max cable size: 4 mm
- CE marked: Yes
- RoHS compliant: Yes
- In accordance with: EN61000-6-1: 2007, EN61000-6-3: 2007, EN61010-1: 2002
- Housing Material: Polycarbonate, Auto extinguishable to UL 94 V-0
Dispatch
In-stock orders are dispatched within 2 business days.
Shipping options
We deliver across Australia and internationally by any of the following methods:
- Australia Post Express
- Australia Post Parcel Post
- DHL
- FedEx (only international)
- Freight account. We'll email packaging dimensions when the shipment is ready to be book.
*Transit times vary depending on the shipping method and destination.
Store Pickup - Carrum Downs, Victoria, 3201
Order before 11am to collect after 2pm the same day. Mon–Fri, 9am–5pm, excludes public holidays.
RETURNS
How to return an item Contact us before sending anything back. Email info@oceancontrols.com.au or call +61 3 9708 2390. We'll confirm eligibility and guide you to the return process.
Return window 14 days from dispatch date.
Condition required Items must be unused and in original packaging, including all documentation and manuals.
Restocking fee A 20% restocking fee applies to all accepted returns. Return shipping costs are the customer's responsibility.
Non-returnable items
- Custom-made or specially imported products
- Software licences (some software have trial versions available)
- Items not in original, as-new condition
WARRANTY
How to make a warranty claim Before returning anything, please contact us. Our engineers can often resolve the issue remotely. If a return is required, our team will provide you with a warranty form to include with the goods.
What's covered Defects in materials and workmanship under normal use and correct installation.
What's not covered The warranty does not cover damage or failures caused by factors outside our control, including incorrect installation, unauthorised alterations or modifications, or any installation or use not recommended by the manufacturer.
Standard warranty All products carry a 12-month warranty from the date of purchase unless stated otherwise.
Extended warranty
- Labjack: 5 Years
- Atop: 5 Years
- MeanWell: 3 Years
- Teracom: 3 Years
- Novus: 3 Years












