Relay Testing
Know the condition of your relays
Relay Testing made quick and easy
Our Relay Testers measure coil resistance, contact resistance, contact configuration and switch time to instantly determine the health of your relays and automatically save a detailed, exportable report for each one.
By measuring more than just that the contacts have switched, our Relay Testers can provide you with a deeper insight into the health of your relay. This helps you not only to prepare for failures, but also to identify and fix them when they do occur, making your relays an asset you can truly rely upon.
RelayDoc
RelayDoc makes BR930 relay testing quick, easy and automatic. With standalone operation, you can simply plug in your relay, input identification information and press test – Let RelayDoc take care of the rest.
RelayDoc requires yearly calibration, which includes the latest software and relay test profile updates.
To book in a calibration, please go to the Contact Us page.
The most recent RelayDoc Software Version is V1.29.
| Product | Part Number |
|---|---|
| RelayDoc | RD-HV BR930 |
Portable RelayDoc
The PRD was designed in a durable carry case and operates through a Samsung tablet via Bluetooth. Capable of testing BR930, PN150, PN250, B1 and B2 relay types with external test bases, it really does give you supreme flexibility with your relay testing.
Portable RelayDoc requires yearly calibration, which includes the latest software and relay test profile updates.
To book in a calibration, please go to the Contact Us page.
Latest Portable RelayDoc app version: V2.24
Software updates can be performed via the Google Playstore. Relay test profiles can be created within the app, or download the MRD Profile Set below.
| Product | Part Number |
|---|---|
| Portable RelayDoc | PRD |
| BR930 Test Base | TB-BR930 |
| PN150 Test Base | TB-PN150 |
| PN250 Test Base | TB-PN250 |
| B1 Test Base | TB-B1 |
| B2 Test Base | TB-B2 |
| NS1 Test Base | TB-NS1 |
RelayPro 110V
RelayPro gives you a durable, mobile test kit for BR930, PN150, PN250, B1 and B2 relay types. Operating through the RelayPro software on a laptop or computer, RelayPro gives you the ability to change both operation values and specification parameters on the fly, making it simple and easy to manually test your relays however you need to.
| Product | Part Number |
|---|---|
| RelayPro | RP |
| BR930 Test Base | TB-BR930 |
| PN150 Test Base | TB-PN150 |
| PN250 Test Base | TB-PN250 |
| B1 Test Base | TB-B1 |
| B2 Test Base | TB-B2 |
| NS1 Test Base | TB-NS1 |
Relay Testing Comparison
Features
RelayDoc
RD-BR930
Portable RelayDoc
PRD
RelayPro*
RP-110
*RelayPro has two models – the base RelayPro (pre-2024), or the RelayPro 110V (2024 onwards). The Base RelayPro can only output 50V, whereas the RelayPro 110V can output the full 110V. The RelayPro 110V is labelled as “RelayPro-110V V3.0”.
Comparison
Relay Testing-
Relays
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Power Output
-
Contact Cleaning/Conditioning
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Integrated Screen & Processor
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Pin Code Detection
-
Portable
-
User Editable Profiles
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Software Updates
-
Profile Updates
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Carry Case
-
Timer Relays
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Warranty
RelayDoc
RD-BR930-
BR-930 only, via integrated plugboard
-
0 - 130V DC
-
100mA fixed (conditioning)
-
Built-in touch screen running Android
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Yes
-
Yes, if using the case and stand accessories. Unit must be mounted vertically for accurate testing of relays.
-
No
-
Via USB, contact MRD for software update
-
Via ethernet connection automatically updated
-
Yes (accessory)
-
No
-
12-months
Portable RelayDoc
PRD-
BR-930, PN150, PN250, B1, B2, NS1 dependent on external test base. Additional test bases can be designed.
-
0 - 110V DC
-
100mA fixed (conditioning)
-
Supplied with Android tablet preloaded with the RelayDoc Application (available on the Android Store)
-
No
-
Yes. External test base must be mounted vertically.
-
Yes, within app
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Via Android Store
-
Base profile set available from www.mrd.com.au (this page, above)
-
Yes (built-in to unit)
-
QTD5 Only (with QTD5 external test base)
-
12-months
RelayPro*
RP-110-
BR-930, PN150, PN250, B1, B2, NS1 dependent on external test base. Additional test bases can be designed.
-
0 – 110V DC
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0 – 3A programmable (cleaning)
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Required Windows PC with RelayPro software
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No
-
Yes. External test base must be mounted vertically.
-
Yes, within program
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Downloadable from www.mrd.com.au (this page, above)
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Base profile set available from www.mrd.com.au (this page, above)
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Yes (Included)
-
No
-
12-months
FAQ
MRD recommends yearly calibrations. This ensures units are completely in specification to continue testing relays accurately.
There are two ways to calibrate a MRD relay tester. The first is through MRD. A MRD calibration includes all software and profile updates, as well as a full clean of the relay plugboard. This ensures low-resistance contact pins, to enable the best test measurements possible.
Alternatively, both RelayPro and RelayDoc calibration kits are available for purchase. The calibration kits allow customers with multiple units to calibrate the units themselves. The calibration kits do need to be returned yearly for their own calibration to ensure the kits are accurate.
This can happen for a few reasons:
1. Dirty or pitted contacts exhibit a dynamic resistance. Current cleaning is effective in removing oxidation film and contact dust.
2. Temperature affects the contacts resistance by a small amount. RelayPro is accurate enough to measure this change. Allow the relay to cool down following the current cleaning of the contacts.
3. Calibration drift can affect RelayPro’s accuracy. This drift could represent a very small measurement error. To ensure high accuracy, RelayPro should be calibrated on a regular basis.