Special watch

Product Overview

1. Measuring range: 
1.1 Hours Run Meter
>Hour Run Meter with built-in synchronous motor, features six-digit readout with no reset function, making them virtually tamper proof. All hour meters are time indication. 
>Display:9999.99
>Operating Voltage: AC 100V 200-250V 380V
>Accuracy Class:0.5
1.2 Phase Sequence Indicator
>Monitoring phase sequence in three-phase power network system.
>Applicable on 100~150V or 150~500V three-phase power network. When the rotation of disc with arrow sign is clockwise rotation means wrong sequence. Exchanging any two of the three “hot” wires, obtain the correct phase sequence. Each test should not be longer than 5 minutes. 
>Operating Voltage: AC 100-150V 150-500V
>Operating Frequency:50Hz,60Hz
1.3 Digital Synchorscope (with relay output)
Indicating the status if power generator and network are synchronized. When the voltage and frequencies in between power generator and network is consistency, rotation of LED Roulette will be slowed down until the SYNC LED is on. Both system can be synchronized and connect the generator to the power network. With relay output, Model prefix is S-DR. Relay Output (Please specify on ordering):
A:1.Voltage difference between UB Band UGEN is less than pre-set value,S1(△U x UN);
2. Frequency difference between FGEN and FBUS is less than pre-set value, S2(△F);
3. Pre-set time difference before phase difference is 0°, S3 (Time);
When above 3conditions are satisfied, synchronized signal will be released. B: Voltage difference between UBB and UGEN is less than pre-set value. S1(△U x UN); phase difference between UBB and UGEN is satisfied with pre-set value S2 (△ φ ), and within the pre-set delay time (Delay), phase difference between UBB and UGEN is still satisfied with pre-set value S2(△φ), synchronized signal will be released.
>Operating Voltage: AC 57V 100V 220V 380V 415V 440V
>Operating Frequency:50Hz,60Hz
>Accuracy Class:15°（Electrical angle15°~345°）
 3°（Electrical angle345°~15°）
1.4 Double Meter 
> Double meter can be used to measuring two independent parameters; saving space and installation time; ideal partner for power generator or equipment.
>Note: Measurement on Voltage and frequency or Voltage and Current can be customized on request.
1.4.1 Double AC Voltmeter 
Measuring range: 0-10V--500V
Accuracy Class:1.5
1.4.2 Double AC Ammeter
Measuring range: 0-5A Connection on CT
Accuracy Class:1.5
1.5 Net Insulation Monitor ( MΩ Meter） 
>Monitoring the insulation resistance of ungrounded power network. When insulation resistance is lower than the preset value, its relay release alarm.
Based on principle method, the Net Insulation Monitor can be divided into following categories:
a)The monitor with measuring system, called Integrated Net Insulation Monitor, Network Insulation Monitor can be customized with self- detection. 
Explanation as follows:
"Monitor" mode: Ordinary Monitoring, Monitor works as normal.
"Suspend" mode: Invalid. Monitor does not check with the insulation resistance of circuit, and pointer points at∞.    
"Test" mode: Self-detection. Monitor does not check with the insulation resistance of circuit, and pointer points at 0, alarm LED lit, relay activated.
b) Monitor and measuring system are separated, called Separated Net Insulation Monitor.
c) Monitoring the insulation resistance of two ungrounded power networks at the    same time, using Integrated double circuits Net Insulation Monitor. 
Technical specification:
>1) Relay (Load resistance):DC 30V,5A,AC250V,5A.
A: NO (Normally Open): When the value is less than alarm limit, relay operate,
normally open change from break to closed.    B:NC (Normally Close): When the value is greater than alarm limit, relay    
operate. until the value is less than alarm limit or cut off the meter power, relay release, normally close contact break connection and close.
 2) Relay (Load resistance):DC 30V,5A,AC250V,5A.
A: NO (Normally Open): When the value is less than alarm limit, relay operate,
normally open change from break to closed.    B:NC (Normally Close): When the value is greater than alarm limit, relay    
operate. until the value is less than alarm limit or cut off the meter power, relay release, normally close contact break connection and close. 
3) Before changing the preset value, please ensure there is no voltage applied.
Maximum Voltage Of Measuring Circuit:  AC 500V 690V
Measuring range: 0-1MΩ 0-5MΩ 0-10 MΩ 
Auxiliary Power: AC 57.7/100/220/380/450V
Accuracy Class:1.5

2. Temperature Range of Operation
>All panel meters can operate trouble-free at room temperatures ranging from -20℃ to +40℃

3. Temperature Range of Storage
>-40℃ to +70℃

4. Insulation Test
>The test voltage is 2kV RMS for 1minute with the frequency 50Hz, All requirements conform to IEC61010-1